/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/sll-rb-cnstr_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:50:31,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:50:31,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:50:31,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:50:31,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:50:31,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:50:31,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:50:31,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:50:31,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:50:31,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:50:31,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:50:31,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:50:31,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:50:31,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:50:31,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:50:31,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:50:31,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:50:31,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:50:31,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:50:31,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:50:31,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:50:31,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:50:31,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:50:31,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:50:31,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:50:31,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:50:31,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:50:31,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:50:31,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:50:31,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:50:31,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:50:31,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:50:31,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:50:31,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:50:31,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:50:31,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:50:31,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:50:31,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:50:31,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:50:31,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:50:31,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:50:31,281 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 [2020-10-14 04:50:31,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:50:31,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:50:31,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:50:31,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:50:31,328 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:50:31,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:50:31,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:50:31,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:50:31,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:50:31,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:50:31,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:50:31,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:50:31,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:50:31,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:50:31,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:50:31,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:50:31,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:50:31,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:50:31,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:50:31,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:50:31,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:50:31,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:50:31,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:50:31,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:50:31,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:50:31,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:50:31,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:50:31,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:50:31,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:50:31,332 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:50:31,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:50:31,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:50:31,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:50:31,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:50:31,662 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:50:31,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-1.i [2020-10-14 04:50:31,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4a6281b7/b2d0d78c63374a54adb7a511158f6a2e/FLAG0d5d0a6c0 [2020-10-14 04:50:32,258 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:50:32,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-1.i [2020-10-14 04:50:32,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4a6281b7/b2d0d78c63374a54adb7a511158f6a2e/FLAG0d5d0a6c0 [2020-10-14 04:50:32,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4a6281b7/b2d0d78c63374a54adb7a511158f6a2e [2020-10-14 04:50:32,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:50:32,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:50:32,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:50:32,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:50:32,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:50:32,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:50:32" (1/1) ... [2020-10-14 04:50:32,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b44b751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:32, skipping insertion in model container [2020-10-14 04:50:32,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:50:32" (1/1) ... [2020-10-14 04:50:32,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:50:32,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:50:33,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:50:33,017 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:50:33,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:50:33,123 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:50:33,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:33 WrapperNode [2020-10-14 04:50:33,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:50:33,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:50:33,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:50:33,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:50:33,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:33" (1/1) ... [2020-10-14 04:50:33,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:33" (1/1) ... [2020-10-14 04:50:33,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:33" (1/1) ... [2020-10-14 04:50:33,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:33" (1/1) ... [2020-10-14 04:50:33,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:33" (1/1) ... [2020-10-14 04:50:33,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:33" (1/1) ... [2020-10-14 04:50:33,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:33" (1/1) ... [2020-10-14 04:50:33,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:50:33,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:50:33,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:50:33,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:50:33,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:33" (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 [2020-10-14 04:50:33,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:50:33,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:50:33,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:50:33,251 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:50:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:50:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:50:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:50:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:50:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:50:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:50:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:50:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:50:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:50:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:50:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:50:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:50:33,254 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:50:33,254 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:50:33,254 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:50:33,254 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:50:33,254 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:50:33,254 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:50:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:50:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:50:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:50:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:50:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:50:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:50:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:50:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:50:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:50:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:50:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:50:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:50:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:50:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:50:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:50:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:50:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:50:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:50:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:50:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:50:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:50:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:50:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:50:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:50:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:50:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:50:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:50:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:50:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:50:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:50:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:50:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:50:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:50:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:50:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:50:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:50:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:50:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:50:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:50:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 04:50:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:50:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:50:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 04:50:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:50:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:50:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 04:50:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:50:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:50:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:50:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:50:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:50:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:50:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:50:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:50:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:50:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:50:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:50:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:50:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:50:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:50:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:50:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:50:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:50:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:50:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:50:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:50:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:50:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:50:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:50:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:50:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:50:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:50:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:50:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:50:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:50:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:50:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:50:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:50:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:50:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:50:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:50:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:50:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:50:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:50:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:50:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:50:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:50:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:50:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:50:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:50:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:50:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:50:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:50:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:50:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:50:33,851 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:50:33,851 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-14 04:50:33,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:50:33 BoogieIcfgContainer [2020-10-14 04:50:33,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:50:33,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:50:33,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:50:33,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:50:33,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:50:32" (1/3) ... [2020-10-14 04:50:33,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370002b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:50:33, skipping insertion in model container [2020-10-14 04:50:33,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:33" (2/3) ... [2020-10-14 04:50:33,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370002b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:50:33, skipping insertion in model container [2020-10-14 04:50:33,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:50:33" (3/3) ... [2020-10-14 04:50:33,865 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-1.i [2020-10-14 04:50:33,875 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:50:33,883 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-14 04:50:33,894 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-14 04:50:33,916 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:50:33,916 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:50:33,916 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:50:33,916 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:50:33,917 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:50:33,917 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:50:33,917 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:50:33,917 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:50:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-14 04:50:33,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 04:50:33,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:33,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:33,943 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:33,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:33,948 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-10-14 04:50:33,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:33,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468433553] [2020-10-14 04:50:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:34,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:34,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:34,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 04:50:34,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:34,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-14 04:50:34,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:34,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:50:34,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:34,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:50:34,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:34,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:34,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:34,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:34,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:34,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:50:34,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:34,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:34,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:34,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:34,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:34,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:34,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468433553] [2020-10-14 04:50:34,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:34,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:50:34,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84778794] [2020-10-14 04:50:34,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 04:50:34,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:34,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 04:50:34,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:50:34,488 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-14 04:50:34,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:34,613 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2020-10-14 04:50:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:50:34,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 04:50:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:34,625 INFO L225 Difference]: With dead ends: 67 [2020-10-14 04:50:34,625 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 04:50:34,629 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 [2020-10-14 04:50:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 04:50:34,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-14 04:50:34,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 04:50:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-14 04:50:34,669 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-10-14 04:50:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:34,670 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-14 04:50:34,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 04:50:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-14 04:50:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-14 04:50:34,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:34,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:34,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:50:34,672 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:34,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:34,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1556669446, now seen corresponding path program 1 times [2020-10-14 04:50:34,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:34,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614280882] [2020-10-14 04:50:34,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:34,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:34,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:34,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:50:34,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:34,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 04:50:34,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:34,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:50:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:50:34,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:34,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:34,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:34,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:34,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:50:34,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:34,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:34,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:34,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614280882] [2020-10-14 04:50:34,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:34,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:50:34,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293147061] [2020-10-14 04:50:34,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:50:34,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:34,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:50:34,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:50:34,870 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-10-14 04:50:34,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:34,976 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-10-14 04:50:34,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:50:34,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-14 04:50:34,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:34,978 INFO L225 Difference]: With dead ends: 34 [2020-10-14 04:50:34,978 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 04:50:34,979 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 [2020-10-14 04:50:34,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 04:50:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-14 04:50:34,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 04:50:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 04:50:34,986 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2020-10-14 04:50:34,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:34,986 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 04:50:34,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:50:34,986 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 04:50:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 04:50:34,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:34,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:34,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:50:34,988 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:34,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-10-14 04:50:34,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:34,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187813049] [2020-10-14 04:50:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:35,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:35,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:35,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:50:35,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:35,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 04:50:35,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:35,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:50:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:50:35,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:35,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:35,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:35,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:35,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:35,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:50:35,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:35,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:35,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:35,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187813049] [2020-10-14 04:50:35,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:35,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:50:35,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660562301] [2020-10-14 04:50:35,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:50:35,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:35,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:50:35,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:50:35,117 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-10-14 04:50:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:35,270 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-10-14 04:50:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:50:35,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-14 04:50:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:35,272 INFO L225 Difference]: With dead ends: 54 [2020-10-14 04:50:35,272 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 04:50:35,273 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 [2020-10-14 04:50:35,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 04:50:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-10-14 04:50:35,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 04:50:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-14 04:50:35,282 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-10-14 04:50:35,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:35,283 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-14 04:50:35,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:50:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-14 04:50:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 04:50:35,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:35,284 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:35,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:50:35,285 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:35,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:35,286 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-10-14 04:50:35,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:35,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382552386] [2020-10-14 04:50:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:35,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:35,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:35,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:50:35,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-14 04:50:35,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:35,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:50:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:50:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:35,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:35,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:35,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:35,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:35,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:35,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:35,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:50:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:35,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382552386] [2020-10-14 04:50:35,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:35,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:50:35,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786600887] [2020-10-14 04:50:35,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:50:35,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:35,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:50:35,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:50:35,780 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-10-14 04:50:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:35,983 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-14 04:50:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:50:35,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-14 04:50:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:35,984 INFO L225 Difference]: With dead ends: 39 [2020-10-14 04:50:35,984 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 04:50:35,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:35,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 04:50:35,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-10-14 04:50:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 04:50:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-14 04:50:35,991 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-10-14 04:50:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:35,991 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-14 04:50:35,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:50:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-14 04:50:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 04:50:35,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:35,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:35,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:50:35,993 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:35,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:35,993 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-10-14 04:50:35,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:35,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62069105] [2020-10-14 04:50:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:36,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 04:50:36,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:36,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 04:50:36,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:36,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:36,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:50:36,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:36,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:50:36,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:36,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:36,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:36,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:36,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:36,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:36,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:36,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:36,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:36,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62069105] [2020-10-14 04:50:36,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:36,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:50:36,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464944587] [2020-10-14 04:50:36,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:50:36,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:36,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:50:36,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:50:36,203 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2020-10-14 04:50:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:36,319 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-10-14 04:50:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:50:36,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-14 04:50:36,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:36,320 INFO L225 Difference]: With dead ends: 62 [2020-10-14 04:50:36,320 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 04:50:36,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:50:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 04:50:36,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-14 04:50:36,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 04:50:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 04:50:36,329 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-10-14 04:50:36,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:36,329 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 04:50:36,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:50:36,329 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 04:50:36,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 04:50:36,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:36,330 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] [2020-10-14 04:50:36,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:50:36,331 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:36,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:36,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-10-14 04:50:36,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:36,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993268197] [2020-10-14 04:50:36,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:36,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:36,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 04:50:36,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:36,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 04:50:36,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:36,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:50:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 04:50:36,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:36,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:36,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:36,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:36,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:36,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:36,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:36,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:36,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:36,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:36,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:36,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993268197] [2020-10-14 04:50:36,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:36,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:50:36,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439937099] [2020-10-14 04:50:36,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:50:36,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:36,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:50:36,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:50:36,479 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-14 04:50:36,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:36,611 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-14 04:50:36,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:50:36,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-14 04:50:36,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:36,613 INFO L225 Difference]: With dead ends: 51 [2020-10-14 04:50:36,613 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 04:50:36,613 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 [2020-10-14 04:50:36,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 04:50:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-14 04:50:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 04:50:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 04:50:36,619 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 21 [2020-10-14 04:50:36,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:36,619 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 04:50:36,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:50:36,619 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 04:50:36,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 04:50:36,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:36,620 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] [2020-10-14 04:50:36,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:50:36,621 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:36,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:36,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1696156082, now seen corresponding path program 1 times [2020-10-14 04:50:36,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:36,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417945335] [2020-10-14 04:50:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:37,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:37,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 04:50:37,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:50:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-14 04:50:37,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:37,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:50:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 04:50:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:50:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:37,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:37,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:37,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:37,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:37,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:37,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:37,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:37,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:37,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:37,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:37,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:37,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:50:37,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417945335] [2020-10-14 04:50:37,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:37,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:50:37,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639076891] [2020-10-14 04:50:37,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:50:37,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:37,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:50:37,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:50:37,126 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-10-14 04:50:37,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:37,229 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-10-14 04:50:37,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:50:37,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-14 04:50:37,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:37,230 INFO L225 Difference]: With dead ends: 44 [2020-10-14 04:50:37,230 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 04:50:37,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:50:37,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 04:50:37,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 04:50:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 04:50:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-14 04:50:37,240 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-10-14 04:50:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:37,241 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-14 04:50:37,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:50:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-14 04:50:37,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:50:37,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:37,243 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] [2020-10-14 04:50:37,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:50:37,243 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:37,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:37,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-10-14 04:50:37,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:37,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417543088] [2020-10-14 04:50:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:37,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:37,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:37,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 04:50:37,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:37,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 04:50:37,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:37,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:50:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:37,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:50:37,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:37,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:37,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:37,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:37,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:37,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:37,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:37,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:37,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:37,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:37,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:37,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417543088] [2020-10-14 04:50:37,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:37,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:37,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145277372] [2020-10-14 04:50:37,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:37,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:37,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:37,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:37,592 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 9 states. [2020-10-14 04:50:38,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:38,054 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-10-14 04:50:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:50:38,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-14 04:50:38,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:38,062 INFO L225 Difference]: With dead ends: 85 [2020-10-14 04:50:38,062 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 04:50:38,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:50:38,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 04:50:38,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 46. [2020-10-14 04:50:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 04:50:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-14 04:50:38,086 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 24 [2020-10-14 04:50:38,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:38,086 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-14 04:50:38,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-14 04:50:38,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:50:38,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:38,090 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] [2020-10-14 04:50:38,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:50:38,090 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:38,091 INFO L82 PathProgramCache]: Analyzing trace with hash -2050422112, now seen corresponding path program 1 times [2020-10-14 04:50:38,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:38,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911293911] [2020-10-14 04:50:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:38,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:38,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:38,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 04:50:38,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 04:50:38,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:38,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:50:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:50:38,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:38,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:38,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:38,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:38,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:38,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:50:38,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:38,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:38,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:38,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:38,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911293911] [2020-10-14 04:50:38,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:38,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:38,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544559905] [2020-10-14 04:50:38,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:38,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:38,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:38,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:38,573 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 9 states. [2020-10-14 04:50:38,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:38,968 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-14 04:50:38,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:50:38,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-14 04:50:38,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:38,969 INFO L225 Difference]: With dead ends: 84 [2020-10-14 04:50:38,969 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 04:50:38,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:38,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 04:50:38,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2020-10-14 04:50:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 04:50:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-14 04:50:38,978 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 24 [2020-10-14 04:50:38,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:38,978 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-14 04:50:38,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:38,978 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-14 04:50:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 04:50:38,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:38,979 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] [2020-10-14 04:50:38,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:50:38,980 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:38,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:38,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1509760762, now seen corresponding path program 1 times [2020-10-14 04:50:38,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:38,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670104950] [2020-10-14 04:50:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:39,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:39,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:39,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 04:50:39,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 04:50:39,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:39,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:39,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:50:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 04:50:39,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:39,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:39,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:39,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:39,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:39,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:39,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:39,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670104950] [2020-10-14 04:50:39,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:39,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:50:39,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061421540] [2020-10-14 04:50:39,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:39,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:39,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:39,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:39,625 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2020-10-14 04:50:40,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:40,100 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-10-14 04:50:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:50:40,101 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-14 04:50:40,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:40,102 INFO L225 Difference]: With dead ends: 85 [2020-10-14 04:50:40,102 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 04:50:40,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:50:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 04:50:40,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2020-10-14 04:50:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 04:50:40,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-14 04:50:40,111 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 27 [2020-10-14 04:50:40,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:40,111 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-14 04:50:40,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-14 04:50:40,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 04:50:40,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:40,113 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] [2020-10-14 04:50:40,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:50:40,113 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:40,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1670120370, now seen corresponding path program 2 times [2020-10-14 04:50:40,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:40,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983459793] [2020-10-14 04:50:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:40,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:40,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 04:50:40,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:40,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-14 04:50:40,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:40,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:50:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:50:40,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:40,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:40,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:40,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:40,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:40,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:40,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:40,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:40,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:40,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983459793] [2020-10-14 04:50:40,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:40,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:50:40,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342311338] [2020-10-14 04:50:40,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:40,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:40,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:40,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:40,798 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 10 states. [2020-10-14 04:50:41,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:41,277 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2020-10-14 04:50:41,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:50:41,277 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-14 04:50:41,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:41,278 INFO L225 Difference]: With dead ends: 95 [2020-10-14 04:50:41,278 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 04:50:41,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:50:41,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 04:50:41,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2020-10-14 04:50:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 04:50:41,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-14 04:50:41,287 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 27 [2020-10-14 04:50:41,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:41,287 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-14 04:50:41,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:41,288 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-14 04:50:41,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 04:50:41,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:41,289 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] [2020-10-14 04:50:41,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:50:41,289 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:41,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1148340406, now seen corresponding path program 3 times [2020-10-14 04:50:41,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:41,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712694006] [2020-10-14 04:50:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:41,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:41,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:41,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 04:50:41,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:41,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-14 04:50:41,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:41,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:41,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:41,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:41,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 04:50:41,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:41,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:41,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:41,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:41,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:41,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:41,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:41,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:41,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:41,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:41,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712694006] [2020-10-14 04:50:41,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:41,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:41,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933759576] [2020-10-14 04:50:41,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:41,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:41,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:41,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:41,829 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 11 states. [2020-10-14 04:50:42,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:42,260 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-10-14 04:50:42,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:50:42,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-14 04:50:42,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:42,262 INFO L225 Difference]: With dead ends: 94 [2020-10-14 04:50:42,262 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 04:50:42,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:50:42,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 04:50:42,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 66. [2020-10-14 04:50:42,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 04:50:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-14 04:50:42,270 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 27 [2020-10-14 04:50:42,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:42,270 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-14 04:50:42,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:42,270 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-14 04:50:42,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 04:50:42,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:42,271 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] [2020-10-14 04:50:42,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:50:42,272 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:42,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:42,272 INFO L82 PathProgramCache]: Analyzing trace with hash 18823372, now seen corresponding path program 2 times [2020-10-14 04:50:42,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:42,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341090645] [2020-10-14 04:50:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:42,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:42,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:42,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 04:50:42,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:42,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:50:42,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:42,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:50:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:50:42,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:42,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:42,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:42,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:42,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:42,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:42,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:42,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341090645] [2020-10-14 04:50:42,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:42,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:42,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417870017] [2020-10-14 04:50:42,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:42,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:42,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:42,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:42,499 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 9 states. [2020-10-14 04:50:42,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:42,780 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2020-10-14 04:50:42,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:50:42,781 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-14 04:50:42,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:42,782 INFO L225 Difference]: With dead ends: 83 [2020-10-14 04:50:42,782 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 04:50:42,783 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 [2020-10-14 04:50:42,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 04:50:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-14 04:50:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 04:50:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-10-14 04:50:42,791 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 27 [2020-10-14 04:50:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:42,791 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-10-14 04:50:42,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-10-14 04:50:42,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:50:42,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:42,795 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:42,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:50:42,797 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:42,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:42,798 INFO L82 PathProgramCache]: Analyzing trace with hash -535707554, now seen corresponding path program 4 times [2020-10-14 04:50:42,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:42,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481215293] [2020-10-14 04:50:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:42,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:43,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:43,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:50:43,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:43,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-14 04:50:43,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:43,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:50:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:50:43,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:43,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:43,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:43,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:43,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:50:43,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:43,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:43,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:43,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481215293] [2020-10-14 04:50:43,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:43,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:50:43,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235179825] [2020-10-14 04:50:43,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:43,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:43,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:43,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:43,497 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 10 states. [2020-10-14 04:50:44,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:44,059 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-10-14 04:50:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:50:44,059 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-14 04:50:44,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:44,060 INFO L225 Difference]: With dead ends: 74 [2020-10-14 04:50:44,060 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 04:50:44,061 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 [2020-10-14 04:50:44,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 04:50:44,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-14 04:50:44,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 04:50:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-10-14 04:50:44,065 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 30 [2020-10-14 04:50:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:44,066 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-10-14 04:50:44,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:44,066 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-10-14 04:50:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:50:44,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:44,067 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] [2020-10-14 04:50:44,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:50:44,067 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:44,068 INFO L82 PathProgramCache]: Analyzing trace with hash 798514594, now seen corresponding path program 2 times [2020-10-14 04:50:44,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:44,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48290743] [2020-10-14 04:50:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:44,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:44,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:50:44,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-14 04:50:44,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:44,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:50:44,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:44,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:44,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:44,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:44,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:44,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:44,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:44,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48290743] [2020-10-14 04:50:44,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:44,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:44,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218339819] [2020-10-14 04:50:44,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:44,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:44,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:44,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:44,734 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 12 states. [2020-10-14 04:50:45,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:45,293 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2020-10-14 04:50:45,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:50:45,293 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-10-14 04:50:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:45,294 INFO L225 Difference]: With dead ends: 84 [2020-10-14 04:50:45,295 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 04:50:45,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:50:45,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 04:50:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 58. [2020-10-14 04:50:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 04:50:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-10-14 04:50:45,301 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 30 [2020-10-14 04:50:45,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:45,302 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-10-14 04:50:45,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:45,302 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-10-14 04:50:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:50:45,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:45,303 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:45,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 04:50:45,303 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:45,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:45,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1913600758, now seen corresponding path program 5 times [2020-10-14 04:50:45,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:45,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819645454] [2020-10-14 04:50:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:46,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:46,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:50:46,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:50:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-14 04:50:46,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:46,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:50:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:46,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:46,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:46,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:46,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:46,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:46,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:46,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:46,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:46,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:46,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819645454] [2020-10-14 04:50:46,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:46,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:46,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314713667] [2020-10-14 04:50:46,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:46,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:46,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:46,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:46,827 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 12 states. [2020-10-14 04:50:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:47,608 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-10-14 04:50:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:50:47,608 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-10-14 04:50:47,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:47,609 INFO L225 Difference]: With dead ends: 117 [2020-10-14 04:50:47,610 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 04:50:47,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:50:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 04:50:47,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2020-10-14 04:50:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 04:50:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2020-10-14 04:50:47,618 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 30 [2020-10-14 04:50:47,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:47,618 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2020-10-14 04:50:47,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2020-10-14 04:50:47,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:50:47,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:47,619 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 04:50:47,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 04:50:47,619 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:47,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:47,620 INFO L82 PathProgramCache]: Analyzing trace with hash 579659876, now seen corresponding path program 1 times [2020-10-14 04:50:47,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:47,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543439915] [2020-10-14 04:50:47,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:47,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:47,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:47,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:50:47,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:47,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 04:50:47,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:47,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:50:47,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:48,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:48,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:48,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:48,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:48,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:48,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:48,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543439915] [2020-10-14 04:50:48,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:48,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:48,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582341090] [2020-10-14 04:50:48,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:48,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:48,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:48,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:48,190 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand 11 states. [2020-10-14 04:50:49,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:49,057 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2020-10-14 04:50:49,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:50:49,057 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 04:50:49,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:49,058 INFO L225 Difference]: With dead ends: 119 [2020-10-14 04:50:49,058 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 04:50:49,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:50:49,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 04:50:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 88. [2020-10-14 04:50:49,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 04:50:49,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2020-10-14 04:50:49,067 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 30 [2020-10-14 04:50:49,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:49,069 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2020-10-14 04:50:49,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:49,069 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2020-10-14 04:50:49,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:50:49,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:49,070 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:49,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 04:50:49,070 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:49,071 INFO L82 PathProgramCache]: Analyzing trace with hash -911277514, now seen corresponding path program 3 times [2020-10-14 04:50:49,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:49,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177499787] [2020-10-14 04:50:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:49,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:49,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:49,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:50:49,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 04:50:49,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:49,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:50:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:49,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:49,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:49,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:49,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:49,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:49,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:49,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:49,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:49,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:49,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177499787] [2020-10-14 04:50:49,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:49,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:49,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729736647] [2020-10-14 04:50:49,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:49,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:49,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:49,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:49,470 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 11 states. [2020-10-14 04:50:49,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:49,999 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2020-10-14 04:50:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:50:49,999 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 04:50:49,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:50,000 INFO L225 Difference]: With dead ends: 116 [2020-10-14 04:50:50,000 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 04:50:50,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:50:50,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 04:50:50,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2020-10-14 04:50:50,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 04:50:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-10-14 04:50:50,008 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 30 [2020-10-14 04:50:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:50,009 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-10-14 04:50:50,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:50,009 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-10-14 04:50:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:50,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:50,010 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:50,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 04:50:50,010 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:50,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:50,010 INFO L82 PathProgramCache]: Analyzing trace with hash 983253858, now seen corresponding path program 3 times [2020-10-14 04:50:50,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:50,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778336800] [2020-10-14 04:50:50,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:50,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:50,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:50,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:50,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:50,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:50,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-10-14 04:50:50,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:50,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:50,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:50,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:50,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:50:50,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:51,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:51,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:51,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:51,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:51,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:51,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:51,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:51,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:51,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:51,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:51,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:51,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:51,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778336800] [2020-10-14 04:50:51,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:51,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:51,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026373339] [2020-10-14 04:50:51,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:51,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:51,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:51,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:51,324 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 12 states. [2020-10-14 04:50:51,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:51,855 INFO L93 Difference]: Finished difference Result 144 states and 163 transitions. [2020-10-14 04:50:51,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:50:51,856 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-14 04:50:51,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:51,857 INFO L225 Difference]: With dead ends: 144 [2020-10-14 04:50:51,857 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 04:50:51,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:50:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 04:50:51,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 105. [2020-10-14 04:50:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 04:50:51,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-10-14 04:50:51,876 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 33 [2020-10-14 04:50:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:51,877 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-10-14 04:50:51,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-10-14 04:50:51,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:51,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:51,878 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:51,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 04:50:51,878 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:51,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:51,878 INFO L82 PathProgramCache]: Analyzing trace with hash 2098340022, now seen corresponding path program 6 times [2020-10-14 04:50:51,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:51,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951025208] [2020-10-14 04:50:51,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:51,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:52,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:52,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:52,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:52,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-10-14 04:50:52,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:52,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 04:50:52,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:53,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:53,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:53,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:53,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:53,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:53,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:53,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:53,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:53,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:53,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951025208] [2020-10-14 04:50:53,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:53,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:53,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083616419] [2020-10-14 04:50:53,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:53,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:53,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:53,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:53,013 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 13 states. [2020-10-14 04:50:54,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:54,029 INFO L93 Difference]: Finished difference Result 226 states and 256 transitions. [2020-10-14 04:50:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:50:54,030 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-14 04:50:54,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:54,031 INFO L225 Difference]: With dead ends: 226 [2020-10-14 04:50:54,031 INFO L226 Difference]: Without dead ends: 224 [2020-10-14 04:50:54,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:50:54,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-14 04:50:54,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 141. [2020-10-14 04:50:54,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 04:50:54,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 162 transitions. [2020-10-14 04:50:54,043 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 162 transitions. Word has length 33 [2020-10-14 04:50:54,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:54,044 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 162 transitions. [2020-10-14 04:50:54,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 162 transitions. [2020-10-14 04:50:54,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:54,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:54,044 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:50:54,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 04:50:54,045 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:54,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:54,045 INFO L82 PathProgramCache]: Analyzing trace with hash -862405126, now seen corresponding path program 4 times [2020-10-14 04:50:54,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:54,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228378616] [2020-10-14 04:50:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:54,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:54,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:54,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:54,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:54,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-14 04:50:54,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:54,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:50:54,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:54,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 04:50:54,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:55,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:55,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:55,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:55,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:55,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:55,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:55,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:55,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:55,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:55,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:55,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228378616] [2020-10-14 04:50:55,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:55,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:50:55,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670206265] [2020-10-14 04:50:55,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:50:55,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:55,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:50:55,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:55,305 INFO L87 Difference]: Start difference. First operand 141 states and 162 transitions. Second operand 14 states. [2020-10-14 04:50:55,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:55,947 INFO L93 Difference]: Finished difference Result 172 states and 195 transitions. [2020-10-14 04:50:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:50:55,948 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-10-14 04:50:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:55,949 INFO L225 Difference]: With dead ends: 172 [2020-10-14 04:50:55,949 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 04:50:55,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:50:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 04:50:55,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 128. [2020-10-14 04:50:55,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-14 04:50:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-10-14 04:50:55,961 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 33 [2020-10-14 04:50:55,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:55,961 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-10-14 04:50:55,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:50:55,962 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-10-14 04:50:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:55,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:55,962 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:55,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 04:50:55,963 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:55,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:55,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1879485304, now seen corresponding path program 1 times [2020-10-14 04:50:55,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:55,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633565869] [2020-10-14 04:50:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:55,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:56,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:56,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:56,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:56,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-14 04:50:56,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:56,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:50:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:57,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:57,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:57,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:57,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:57,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:57,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:57,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:57,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:57,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:57,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:57,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:57,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:57,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633565869] [2020-10-14 04:50:57,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:57,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:57,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488703726] [2020-10-14 04:50:57,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:57,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:57,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:57,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:57,083 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 13 states. [2020-10-14 04:50:57,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:57,964 INFO L93 Difference]: Finished difference Result 215 states and 244 transitions. [2020-10-14 04:50:57,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:50:57,965 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-14 04:50:57,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:57,967 INFO L225 Difference]: With dead ends: 215 [2020-10-14 04:50:57,967 INFO L226 Difference]: Without dead ends: 203 [2020-10-14 04:50:57,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:50:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-14 04:50:57,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 169. [2020-10-14 04:50:57,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 04:50:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 194 transitions. [2020-10-14 04:50:57,981 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 194 transitions. Word has length 33 [2020-10-14 04:50:57,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:57,981 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 194 transitions. [2020-10-14 04:50:57,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:57,981 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 194 transitions. [2020-10-14 04:50:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:57,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:57,982 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:50:57,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 04:50:57,983 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:57,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:57,983 INFO L82 PathProgramCache]: Analyzing trace with hash 842705248, now seen corresponding path program 2 times [2020-10-14 04:50:57,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:57,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277381242] [2020-10-14 04:50:57,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:58,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:58,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:58,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:58,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 04:50:58,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:58,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 04:50:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:58,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:58,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:58,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:58,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:58,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:58,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:58,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:58,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:58,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277381242] [2020-10-14 04:50:58,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:58,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:58,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235860176] [2020-10-14 04:50:58,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:58,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:58,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:58,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:58,577 INFO L87 Difference]: Start difference. First operand 169 states and 194 transitions. Second operand 12 states. [2020-10-14 04:50:59,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:59,296 INFO L93 Difference]: Finished difference Result 202 states and 229 transitions. [2020-10-14 04:50:59,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:50:59,297 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-14 04:50:59,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:59,299 INFO L225 Difference]: With dead ends: 202 [2020-10-14 04:50:59,299 INFO L226 Difference]: Without dead ends: 200 [2020-10-14 04:50:59,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:50:59,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-14 04:50:59,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 167. [2020-10-14 04:50:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 04:50:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 192 transitions. [2020-10-14 04:50:59,314 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 192 transitions. Word has length 33 [2020-10-14 04:50:59,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:59,315 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 192 transitions. [2020-10-14 04:50:59,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 192 transitions. [2020-10-14 04:50:59,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:59,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:59,316 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:59,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 04:50:59,316 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:59,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:59,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1002953736, now seen corresponding path program 3 times [2020-10-14 04:50:59,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:59,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414577102] [2020-10-14 04:50:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:59,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:59,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:59,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:59,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:59,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-14 04:50:59,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:59,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:59,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:59,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:59,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:50:59,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:00,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:00,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:00,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:00,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:00,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:00,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:00,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:00,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:00,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:00,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414577102] [2020-10-14 04:51:00,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:00,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:51:00,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156763212] [2020-10-14 04:51:00,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:51:00,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:00,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:51:00,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:51:00,137 INFO L87 Difference]: Start difference. First operand 167 states and 192 transitions. Second operand 12 states. [2020-10-14 04:51:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:01,016 INFO L93 Difference]: Finished difference Result 227 states and 259 transitions. [2020-10-14 04:51:01,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:51:01,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-14 04:51:01,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:01,018 INFO L225 Difference]: With dead ends: 227 [2020-10-14 04:51:01,018 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 04:51:01,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:51:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 04:51:01,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 159. [2020-10-14 04:51:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-14 04:51:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 180 transitions. [2020-10-14 04:51:01,039 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 180 transitions. Word has length 33 [2020-10-14 04:51:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:01,039 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 180 transitions. [2020-10-14 04:51:01,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:51:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 180 transitions. [2020-10-14 04:51:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:51:01,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:01,040 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:01,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 04:51:01,040 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:01,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:01,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1738936694, now seen corresponding path program 4 times [2020-10-14 04:51:01,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:01,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106609852] [2020-10-14 04:51:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:01,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:01,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:01,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:01,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:51:01,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:01,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:01,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:01,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:01,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:01,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:01,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:01,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106609852] [2020-10-14 04:51:01,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:01,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:51:01,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266678494] [2020-10-14 04:51:01,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:51:01,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:01,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:51:01,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:51:01,370 INFO L87 Difference]: Start difference. First operand 159 states and 180 transitions. Second operand 11 states. [2020-10-14 04:51:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:01,817 INFO L93 Difference]: Finished difference Result 179 states and 201 transitions. [2020-10-14 04:51:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:51:01,817 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-14 04:51:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:01,819 INFO L225 Difference]: With dead ends: 179 [2020-10-14 04:51:01,819 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 04:51:01,819 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 [2020-10-14 04:51:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 04:51:01,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-10-14 04:51:01,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 04:51:01,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 171 transitions. [2020-10-14 04:51:01,831 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 171 transitions. Word has length 33 [2020-10-14 04:51:01,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:01,832 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 171 transitions. [2020-10-14 04:51:01,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:51:01,832 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 171 transitions. [2020-10-14 04:51:01,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:51:01,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:01,832 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:01,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 04:51:01,833 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:01,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:01,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1597405790, now seen corresponding path program 5 times [2020-10-14 04:51:01,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:01,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012133987] [2020-10-14 04:51:01,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:02,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:02,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:51:02,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:02,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-10-14 04:51:02,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:02,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:02,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:51:02,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:51:02,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:03,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:03,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:03,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:03,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:03,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:03,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:03,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:03,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:03,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:03,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:03,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012133987] [2020-10-14 04:51:03,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:03,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:51:03,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467150707] [2020-10-14 04:51:03,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:51:03,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:03,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:51:03,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:51:03,058 INFO L87 Difference]: Start difference. First operand 151 states and 171 transitions. Second operand 14 states. [2020-10-14 04:51:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:04,240 INFO L93 Difference]: Finished difference Result 205 states and 230 transitions. [2020-10-14 04:51:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 04:51:04,241 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-14 04:51:04,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:04,243 INFO L225 Difference]: With dead ends: 205 [2020-10-14 04:51:04,243 INFO L226 Difference]: Without dead ends: 203 [2020-10-14 04:51:04,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:51:04,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-14 04:51:04,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 141. [2020-10-14 04:51:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 04:51:04,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 160 transitions. [2020-10-14 04:51:04,257 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 160 transitions. Word has length 36 [2020-10-14 04:51:04,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:04,257 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 160 transitions. [2020-10-14 04:51:04,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:51:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 160 transitions. [2020-10-14 04:51:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:51:04,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:04,258 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:04,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 04:51:04,258 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:04,259 INFO L82 PathProgramCache]: Analyzing trace with hash -482319626, now seen corresponding path program 7 times [2020-10-14 04:51:04,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:04,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200669424] [2020-10-14 04:51:04,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:04,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:04,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:05,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:05,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:51:05,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:51:05,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-10-14 04:51:05,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:05,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:05,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:51:05,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:05,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:51:05,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:06,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:06,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:06,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:06,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:06,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:51:06,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:06,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:06,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200669424] [2020-10-14 04:51:06,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:06,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:51:06,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427488945] [2020-10-14 04:51:06,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:51:06,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:06,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:51:06,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:51:06,180 INFO L87 Difference]: Start difference. First operand 141 states and 160 transitions. Second operand 14 states. [2020-10-14 04:51:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:07,204 INFO L93 Difference]: Finished difference Result 181 states and 203 transitions. [2020-10-14 04:51:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:51:07,205 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-14 04:51:07,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:07,206 INFO L225 Difference]: With dead ends: 181 [2020-10-14 04:51:07,206 INFO L226 Difference]: Without dead ends: 169 [2020-10-14 04:51:07,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:51:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-14 04:51:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 139. [2020-10-14 04:51:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 04:51:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 158 transitions. [2020-10-14 04:51:07,219 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 158 transitions. Word has length 36 [2020-10-14 04:51:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:07,219 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 158 transitions. [2020-10-14 04:51:07,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:51:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 158 transitions. [2020-10-14 04:51:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:51:07,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:07,220 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:07,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 04:51:07,221 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:07,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:07,221 INFO L82 PathProgramCache]: Analyzing trace with hash -337788578, now seen corresponding path program 8 times [2020-10-14 04:51:07,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:07,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642851404] [2020-10-14 04:51:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:07,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:08,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:08,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:51:08,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:08,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1190 [2020-10-14 04:51:08,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:08,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:51:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:51:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:08,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:08,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:08,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:08,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:08,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:08,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:08,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:08,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:08,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:08,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:08,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642851404] [2020-10-14 04:51:08,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:08,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:51:08,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26976830] [2020-10-14 04:51:08,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:51:08,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:08,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:51:08,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:51:08,992 INFO L87 Difference]: Start difference. First operand 139 states and 158 transitions. Second operand 15 states. [2020-10-14 04:51:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:10,198 INFO L93 Difference]: Finished difference Result 202 states and 226 transitions. [2020-10-14 04:51:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:51:10,198 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-14 04:51:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:10,200 INFO L225 Difference]: With dead ends: 202 [2020-10-14 04:51:10,200 INFO L226 Difference]: Without dead ends: 200 [2020-10-14 04:51:10,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:51:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-14 04:51:10,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 155. [2020-10-14 04:51:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 04:51:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 176 transitions. [2020-10-14 04:51:10,214 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 176 transitions. Word has length 36 [2020-10-14 04:51:10,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:10,215 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 176 transitions. [2020-10-14 04:51:10,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:51:10,215 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 176 transitions. [2020-10-14 04:51:10,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:51:10,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:10,216 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:10,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 04:51:10,216 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:10,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:10,217 INFO L82 PathProgramCache]: Analyzing trace with hash -622868236, now seen corresponding path program 2 times [2020-10-14 04:51:10,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:10,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881738690] [2020-10-14 04:51:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:10,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:10,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:10,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:51:10,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:10,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-14 04:51:10,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:10,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:51:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:51:10,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:10,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:10,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:10,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:10,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:10,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:10,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:10,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:10,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881738690] [2020-10-14 04:51:10,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:10,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:51:10,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959892513] [2020-10-14 04:51:10,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:51:10,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:10,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:51:10,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:51:10,791 INFO L87 Difference]: Start difference. First operand 155 states and 176 transitions. Second operand 13 states. [2020-10-14 04:51:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:11,567 INFO L93 Difference]: Finished difference Result 184 states and 207 transitions. [2020-10-14 04:51:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:51:11,568 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-14 04:51:11,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:11,569 INFO L225 Difference]: With dead ends: 184 [2020-10-14 04:51:11,570 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 04:51:11,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:51:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 04:51:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-10-14 04:51:11,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 04:51:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 147 transitions. [2020-10-14 04:51:11,581 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 147 transitions. Word has length 36 [2020-10-14 04:51:11,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:11,582 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 147 transitions. [2020-10-14 04:51:11,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:51:11,582 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 147 transitions. [2020-10-14 04:51:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:51:11,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:11,583 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 04:51:11,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 04:51:11,583 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:11,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:11,583 INFO L82 PathProgramCache]: Analyzing trace with hash -943401652, now seen corresponding path program 4 times [2020-10-14 04:51:11,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:11,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837596476] [2020-10-14 04:51:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:11,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:11,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:11,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:51:11,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:11,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-14 04:51:11,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:11,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:51:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:51:11,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:12,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:12,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:12,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:12,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:12,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:12,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:51:12,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:12,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:12,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:12,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837596476] [2020-10-14 04:51:12,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:12,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:51:12,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363331731] [2020-10-14 04:51:12,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:51:12,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:12,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:51:12,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:51:12,451 INFO L87 Difference]: Start difference. First operand 129 states and 147 transitions. Second operand 14 states. [2020-10-14 04:51:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:13,400 INFO L93 Difference]: Finished difference Result 172 states and 195 transitions. [2020-10-14 04:51:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:51:13,401 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-14 04:51:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:13,403 INFO L225 Difference]: With dead ends: 172 [2020-10-14 04:51:13,403 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 04:51:13,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:51:13,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 04:51:13,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 148. [2020-10-14 04:51:13,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 04:51:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 169 transitions. [2020-10-14 04:51:13,417 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 169 transitions. Word has length 36 [2020-10-14 04:51:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:13,417 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 169 transitions. [2020-10-14 04:51:13,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:51:13,417 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 169 transitions. [2020-10-14 04:51:13,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:51:13,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:13,418 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 04:51:13,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 04:51:13,419 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:13,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:13,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1083950262, now seen corresponding path program 5 times [2020-10-14 04:51:13,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:13,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694498798] [2020-10-14 04:51:13,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:13,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:13,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:13,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:51:13,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:13,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-14 04:51:13,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:13,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:13,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:51:13,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:13,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:51:13,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:51:14,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:14,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:14,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:14,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:14,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:14,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:14,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:14,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:14,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:14,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694498798] [2020-10-14 04:51:14,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:14,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:51:14,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986991828] [2020-10-14 04:51:14,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:51:14,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:14,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:51:14,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:51:14,271 INFO L87 Difference]: Start difference. First operand 148 states and 169 transitions. Second operand 13 states. [2020-10-14 04:51:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:15,050 INFO L93 Difference]: Finished difference Result 184 states and 208 transitions. [2020-10-14 04:51:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:51:15,052 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-14 04:51:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:15,053 INFO L225 Difference]: With dead ends: 184 [2020-10-14 04:51:15,053 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 04:51:15,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:51:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 04:51:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 137. [2020-10-14 04:51:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 04:51:15,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2020-10-14 04:51:15,065 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 36 [2020-10-14 04:51:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:15,065 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2020-10-14 04:51:15,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:51:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2020-10-14 04:51:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:51:15,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:15,065 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:15,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 04:51:15,066 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:15,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:15,066 INFO L82 PathProgramCache]: Analyzing trace with hash -999294794, now seen corresponding path program 9 times [2020-10-14 04:51:15,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:15,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003695165] [2020-10-14 04:51:15,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:15,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:15,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:15,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:17,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:17,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:51:17,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:51:17,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2065 [2020-10-14 04:51:17,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:17,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:17,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:51:17,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:17,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:51:17,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:17,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:17,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:17,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:17,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:17,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:51:17,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:17,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:17,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003695165] [2020-10-14 04:51:17,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:17,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:51:17,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583410260] [2020-10-14 04:51:17,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:51:17,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:17,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:51:17,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:51:17,606 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand 14 states. [2020-10-14 04:51:18,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:18,601 INFO L93 Difference]: Finished difference Result 159 states and 181 transitions. [2020-10-14 04:51:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:51:18,606 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-14 04:51:18,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:18,607 INFO L225 Difference]: With dead ends: 159 [2020-10-14 04:51:18,607 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 04:51:18,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:51:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 04:51:18,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2020-10-14 04:51:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 04:51:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-10-14 04:51:18,616 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 39 [2020-10-14 04:51:18,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:18,616 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-10-14 04:51:18,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:51:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-10-14 04:51:18,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:51:18,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:18,616 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:18,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 04:51:18,617 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:18,617 INFO L82 PathProgramCache]: Analyzing trace with hash 52839418, now seen corresponding path program 6 times [2020-10-14 04:51:18,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:18,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085902700] [2020-10-14 04:51:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:18,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:18,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:19,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:19,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:51:19,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:19,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-10-14 04:51:19,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:19,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:51:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:51:19,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:51:20,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:20,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:20,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:20,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:20,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:20,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:20,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:20,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:20,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:20,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:20,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:20,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085902700] [2020-10-14 04:51:20,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:20,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:51:20,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111623324] [2020-10-14 04:51:20,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:51:20,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:20,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:51:20,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:51:20,329 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand 16 states. [2020-10-14 04:51:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:21,650 INFO L93 Difference]: Finished difference Result 180 states and 209 transitions. [2020-10-14 04:51:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:51:21,651 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-14 04:51:21,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:21,652 INFO L225 Difference]: With dead ends: 180 [2020-10-14 04:51:21,653 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 04:51:21,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:51:21,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 04:51:21,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 140. [2020-10-14 04:51:21,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-14 04:51:21,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 160 transitions. [2020-10-14 04:51:21,669 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 160 transitions. Word has length 39 [2020-10-14 04:51:21,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:21,669 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 160 transitions. [2020-10-14 04:51:21,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:51:21,669 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 160 transitions. [2020-10-14 04:51:21,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:51:21,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:21,670 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:21,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 04:51:21,670 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:21,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:21,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1167925582, now seen corresponding path program 10 times [2020-10-14 04:51:21,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:21,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790864625] [2020-10-14 04:51:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:21,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:21,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:22,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:23,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:23,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:51:23,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:51:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2044 [2020-10-14 04:51:23,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:23,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:51:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:51:23,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:51:24,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:24,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:24,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:24,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:24,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:24,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:24,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:24,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:24,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790864625] [2020-10-14 04:51:24,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:24,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:51:24,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268634487] [2020-10-14 04:51:24,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:51:24,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:24,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:51:24,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:51:24,408 INFO L87 Difference]: Start difference. First operand 140 states and 160 transitions. Second operand 16 states. [2020-10-14 04:51:26,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:26,144 INFO L93 Difference]: Finished difference Result 251 states and 284 transitions. [2020-10-14 04:51:26,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:51:26,145 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-14 04:51:26,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:26,147 INFO L225 Difference]: With dead ends: 251 [2020-10-14 04:51:26,147 INFO L226 Difference]: Without dead ends: 249 [2020-10-14 04:51:26,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:51:26,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-14 04:51:26,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 188. [2020-10-14 04:51:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-14 04:51:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 216 transitions. [2020-10-14 04:51:26,165 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 216 transitions. Word has length 39 [2020-10-14 04:51:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:26,166 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 216 transitions. [2020-10-14 04:51:26,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:51:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 216 transitions. [2020-10-14 04:51:26,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:51:26,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:26,167 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:26,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 04:51:26,167 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:26,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:26,167 INFO L82 PathProgramCache]: Analyzing trace with hash 562312508, now seen corresponding path program 6 times [2020-10-14 04:51:26,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:26,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65165293] [2020-10-14 04:51:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:26,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:26,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:27,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:27,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:51:27,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-10-14 04:51:27,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:27,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:51:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:51:27,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:27,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:27,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:27,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:27,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:27,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:27,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:27,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:27,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:27,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:27,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65165293] [2020-10-14 04:51:27,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:27,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:51:27,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184339541] [2020-10-14 04:51:27,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:51:27,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:27,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:51:27,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:51:27,821 INFO L87 Difference]: Start difference. First operand 188 states and 216 transitions. Second operand 15 states. [2020-10-14 04:51:28,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:28,832 INFO L93 Difference]: Finished difference Result 299 states and 345 transitions. [2020-10-14 04:51:28,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:51:28,832 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-10-14 04:51:28,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:28,834 INFO L225 Difference]: With dead ends: 299 [2020-10-14 04:51:28,835 INFO L226 Difference]: Without dead ends: 286 [2020-10-14 04:51:28,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:51:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-14 04:51:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 243. [2020-10-14 04:51:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-14 04:51:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 277 transitions. [2020-10-14 04:51:28,856 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 277 transitions. Word has length 39 [2020-10-14 04:51:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:28,856 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 277 transitions. [2020-10-14 04:51:28,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:51:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 277 transitions. [2020-10-14 04:51:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:51:28,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:28,857 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:28,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 04:51:28,857 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:28,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1536850062, now seen corresponding path program 3 times [2020-10-14 04:51:28,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:28,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416125189] [2020-10-14 04:51:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:28,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:29,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:29,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:29,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:51:29,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:29,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-14 04:51:29,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:29,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:51:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:51:29,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:30,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:30,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:30,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:30,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:30,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:30,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:30,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:30,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:30,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:30,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416125189] [2020-10-14 04:51:30,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:30,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:51:30,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864429936] [2020-10-14 04:51:30,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:51:30,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:30,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:51:30,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:51:30,448 INFO L87 Difference]: Start difference. First operand 243 states and 277 transitions. Second operand 15 states. [2020-10-14 04:51:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:31,670 INFO L93 Difference]: Finished difference Result 297 states and 341 transitions. [2020-10-14 04:51:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:51:31,671 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-10-14 04:51:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:31,673 INFO L225 Difference]: With dead ends: 297 [2020-10-14 04:51:31,673 INFO L226 Difference]: Without dead ends: 285 [2020-10-14 04:51:31,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:51:31,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-14 04:51:31,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2020-10-14 04:51:31,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-14 04:51:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 285 transitions. [2020-10-14 04:51:31,692 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 285 transitions. Word has length 39 [2020-10-14 04:51:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:31,693 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 285 transitions. [2020-10-14 04:51:31,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:51:31,693 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 285 transitions. [2020-10-14 04:51:31,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:51:31,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:31,694 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:31,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 04:51:31,694 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:31,695 INFO L82 PathProgramCache]: Analyzing trace with hash 144940554, now seen corresponding path program 7 times [2020-10-14 04:51:31,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:31,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684375970] [2020-10-14 04:51:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:31,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:32,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:33,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:33,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:51:33,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:51:33,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1736 [2020-10-14 04:51:33,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:33,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:51:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:51:33,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:34,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:34,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:34,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:34,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:34,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:34,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:34,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:34,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:34,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684375970] [2020-10-14 04:51:34,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:34,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:51:34,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522052584] [2020-10-14 04:51:34,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:51:34,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:34,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:51:34,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:51:34,150 INFO L87 Difference]: Start difference. First operand 251 states and 285 transitions. Second operand 16 states. [2020-10-14 04:51:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:35,450 INFO L93 Difference]: Finished difference Result 308 states and 352 transitions. [2020-10-14 04:51:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:51:35,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-14 04:51:35,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:35,453 INFO L225 Difference]: With dead ends: 308 [2020-10-14 04:51:35,453 INFO L226 Difference]: Without dead ends: 295 [2020-10-14 04:51:35,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:51:35,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-14 04:51:35,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 251. [2020-10-14 04:51:35,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-14 04:51:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 285 transitions. [2020-10-14 04:51:35,475 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 285 transitions. Word has length 42 [2020-10-14 04:51:35,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:35,475 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 285 transitions. [2020-10-14 04:51:35,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:51:35,476 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 285 transitions. [2020-10-14 04:51:35,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:51:35,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:35,477 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:35,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 04:51:35,477 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:35,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:35,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1260026718, now seen corresponding path program 11 times [2020-10-14 04:51:35,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:35,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241773832] [2020-10-14 04:51:35,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:35,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:35,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:36,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:36,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:51:36,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:51:36,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1341 [2020-10-14 04:51:36,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:36,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:51:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:51:36,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:37,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:37,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:37,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:37,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:37,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:37,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:37,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:37,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:37,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:37,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:37,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:37,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241773832] [2020-10-14 04:51:37,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:37,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:51:37,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982671607] [2020-10-14 04:51:37,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:51:37,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:37,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:51:37,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:51:37,362 INFO L87 Difference]: Start difference. First operand 251 states and 285 transitions. Second operand 17 states. [2020-10-14 04:51:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:39,608 INFO L93 Difference]: Finished difference Result 479 states and 541 transitions. [2020-10-14 04:51:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:51:39,610 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-10-14 04:51:39,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:39,612 INFO L225 Difference]: With dead ends: 479 [2020-10-14 04:51:39,612 INFO L226 Difference]: Without dead ends: 477 [2020-10-14 04:51:39,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2020-10-14 04:51:39,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-14 04:51:39,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 344. [2020-10-14 04:51:39,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-10-14 04:51:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 390 transitions. [2020-10-14 04:51:39,637 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 390 transitions. Word has length 42 [2020-10-14 04:51:39,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:39,637 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 390 transitions. [2020-10-14 04:51:39,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:51:39,637 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 390 transitions. [2020-10-14 04:51:39,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:51:39,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:39,638 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:39,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 04:51:39,638 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:39,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:39,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1982806366, now seen corresponding path program 8 times [2020-10-14 04:51:39,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:39,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962336845] [2020-10-14 04:51:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:39,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:40,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:40,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:51:40,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:40,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1267 [2020-10-14 04:51:40,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:40,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:40,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:51:40,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:40,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:51:40,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:41,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:41,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:41,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:41,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:41,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:41,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:41,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:41,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:41,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:41,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:41,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:41,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:41,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962336845] [2020-10-14 04:51:41,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:41,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 04:51:41,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66163437] [2020-10-14 04:51:41,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 04:51:41,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:41,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 04:51:41,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:51:41,831 INFO L87 Difference]: Start difference. First operand 344 states and 390 transitions. Second operand 18 states. [2020-10-14 04:51:43,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:43,311 INFO L93 Difference]: Finished difference Result 402 states and 456 transitions. [2020-10-14 04:51:43,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:51:43,312 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-10-14 04:51:43,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:43,314 INFO L225 Difference]: With dead ends: 402 [2020-10-14 04:51:43,314 INFO L226 Difference]: Without dead ends: 400 [2020-10-14 04:51:43,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:51:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-14 04:51:43,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 307. [2020-10-14 04:51:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-14 04:51:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 349 transitions. [2020-10-14 04:51:43,340 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 349 transitions. Word has length 42 [2020-10-14 04:51:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:43,340 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 349 transitions. [2020-10-14 04:51:43,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 04:51:43,341 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 349 transitions. [2020-10-14 04:51:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:51:43,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:43,341 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:43,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 04:51:43,342 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:43,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:43,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1769499808, now seen corresponding path program 4 times [2020-10-14 04:51:43,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:43,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712046737] [2020-10-14 04:51:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:43,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:43,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:44,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:44,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:51:44,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:51:44,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1473 [2020-10-14 04:51:44,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:44,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:44,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:51:44,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:44,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 04:51:44,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:45,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:45,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:45,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:45,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:45,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:45,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:45,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:45,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:45,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712046737] [2020-10-14 04:51:45,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:45,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:51:45,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190967458] [2020-10-14 04:51:45,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:51:45,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:45,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:51:45,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:51:45,615 INFO L87 Difference]: Start difference. First operand 307 states and 349 transitions. Second operand 17 states. [2020-10-14 04:51:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:47,603 INFO L93 Difference]: Finished difference Result 463 states and 523 transitions. [2020-10-14 04:51:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 04:51:47,603 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-10-14 04:51:47,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:47,605 INFO L225 Difference]: With dead ends: 463 [2020-10-14 04:51:47,606 INFO L226 Difference]: Without dead ends: 451 [2020-10-14 04:51:47,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:51:47,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-14 04:51:47,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 397. [2020-10-14 04:51:47,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-14 04:51:47,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 448 transitions. [2020-10-14 04:51:47,638 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 448 transitions. Word has length 42 [2020-10-14 04:51:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:47,639 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 448 transitions. [2020-10-14 04:51:47,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:51:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 448 transitions. [2020-10-14 04:51:47,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:51:47,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:47,639 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:47,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 04:51:47,640 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:47,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:47,640 INFO L82 PathProgramCache]: Analyzing trace with hash -556659320, now seen corresponding path program 7 times [2020-10-14 04:51:47,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:47,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703877419] [2020-10-14 04:51:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:47,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:47,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:48,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:48,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:51:48,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-10-14 04:51:48,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:48,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:51:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:51:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:48,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:48,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:48,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:48,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:48,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:48,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:48,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:48,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703877419] [2020-10-14 04:51:48,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:48,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:51:48,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940073824] [2020-10-14 04:51:48,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:51:48,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:48,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:51:48,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:51:48,952 INFO L87 Difference]: Start difference. First operand 397 states and 448 transitions. Second operand 16 states. [2020-10-14 04:51:50,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:50,490 INFO L93 Difference]: Finished difference Result 499 states and 562 transitions. [2020-10-14 04:51:50,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:51:50,491 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-14 04:51:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:50,494 INFO L225 Difference]: With dead ends: 499 [2020-10-14 04:51:50,494 INFO L226 Difference]: Without dead ends: 497 [2020-10-14 04:51:50,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:51:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-14 04:51:50,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 437. [2020-10-14 04:51:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-14 04:51:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 492 transitions. [2020-10-14 04:51:50,534 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 492 transitions. Word has length 42 [2020-10-14 04:51:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:50,535 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 492 transitions. [2020-10-14 04:51:50,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:51:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 492 transitions. [2020-10-14 04:51:50,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:51:50,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:50,536 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:50,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 04:51:50,537 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:50,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:50,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1067899934, now seen corresponding path program 5 times [2020-10-14 04:51:50,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:50,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153089587] [2020-10-14 04:51:50,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:50,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:51,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:51,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:51:51,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:51,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-14 04:51:51,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:51,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:51,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:51:51,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:51:51,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:51,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:51,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:51,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:51,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:51,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:51,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:51,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:51,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153089587] [2020-10-14 04:51:51,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:51,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:51:51,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054098098] [2020-10-14 04:51:51,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:51:51,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:51,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:51:51,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:51:51,579 INFO L87 Difference]: Start difference. First operand 437 states and 492 transitions. Second operand 15 states. [2020-10-14 04:51:52,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:52,714 INFO L93 Difference]: Finished difference Result 470 states and 527 transitions. [2020-10-14 04:51:52,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:51:52,715 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-10-14 04:51:52,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:52,718 INFO L225 Difference]: With dead ends: 470 [2020-10-14 04:51:52,718 INFO L226 Difference]: Without dead ends: 401 [2020-10-14 04:51:52,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:51:52,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-14 04:51:52,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2020-10-14 04:51:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-10-14 04:51:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 452 transitions. [2020-10-14 04:51:52,754 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 452 transitions. Word has length 42 [2020-10-14 04:51:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:52,754 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 452 transitions. [2020-10-14 04:51:52,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:51:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 452 transitions. [2020-10-14 04:51:52,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:51:52,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:52,755 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:52,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 04:51:52,756 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:52,756 INFO L82 PathProgramCache]: Analyzing trace with hash -554219014, now seen corresponding path program 9 times [2020-10-14 04:51:52,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:52,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486582220] [2020-10-14 04:51:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:52,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:55,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:55,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:51:55,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:51:55,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2313 [2020-10-14 04:51:55,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:55,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:55,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:51:55,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:55,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:51:55,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:55,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:55,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:55,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:55,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:55,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:55,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:55,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:55,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:55,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:55,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:55,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:55,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:51:55,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486582220] [2020-10-14 04:51:55,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:55,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:51:55,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918481846] [2020-10-14 04:51:55,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:51:55,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:55,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:51:55,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:51:55,701 INFO L87 Difference]: Start difference. First operand 401 states and 452 transitions. Second operand 14 states. [2020-10-14 04:51:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:56,503 INFO L93 Difference]: Finished difference Result 480 states and 538 transitions. [2020-10-14 04:51:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:51:56,504 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-10-14 04:51:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:56,506 INFO L225 Difference]: With dead ends: 480 [2020-10-14 04:51:56,507 INFO L226 Difference]: Without dead ends: 455 [2020-10-14 04:51:56,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:51:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-10-14 04:51:56,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 427. [2020-10-14 04:51:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-10-14 04:51:56,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 478 transitions. [2020-10-14 04:51:56,542 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 478 transitions. Word has length 45 [2020-10-14 04:51:56,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:56,543 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 478 transitions. [2020-10-14 04:51:56,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:51:56,543 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 478 transitions. [2020-10-14 04:51:56,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:51:56,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:56,544 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:56,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 04:51:56,545 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:56,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:56,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1490116848, now seen corresponding path program 6 times [2020-10-14 04:51:56,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:56,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807532008] [2020-10-14 04:51:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:56,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:56,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:56,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:58,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:58,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:51:58,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:51:58,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2334 [2020-10-14 04:51:58,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:58,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:51:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:51:58,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:59,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:59,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:59,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:59,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:59,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:59,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:59,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:59,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:59,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807532008] [2020-10-14 04:51:59,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:59,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:51:59,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495056857] [2020-10-14 04:51:59,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:51:59,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:59,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:51:59,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:51:59,316 INFO L87 Difference]: Start difference. First operand 427 states and 478 transitions. Second operand 16 states. [2020-10-14 04:52:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:00,931 INFO L93 Difference]: Finished difference Result 449 states and 501 transitions. [2020-10-14 04:52:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:52:00,932 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-14 04:52:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:00,934 INFO L225 Difference]: With dead ends: 449 [2020-10-14 04:52:00,935 INFO L226 Difference]: Without dead ends: 372 [2020-10-14 04:52:00,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:52:00,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-14 04:52:00,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2020-10-14 04:52:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-14 04:52:00,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 417 transitions. [2020-10-14 04:52:00,965 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 417 transitions. Word has length 45 [2020-10-14 04:52:00,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:00,965 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 417 transitions. [2020-10-14 04:52:00,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:52:00,966 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 417 transitions. [2020-10-14 04:52:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:52:00,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:00,967 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:00,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 04:52:00,967 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:00,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:00,968 INFO L82 PathProgramCache]: Analyzing trace with hash -891375068, now seen corresponding path program 8 times [2020-10-14 04:52:00,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:00,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166090629] [2020-10-14 04:52:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:01,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:01,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:02,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:02,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:52:02,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1275 [2020-10-14 04:52:02,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:02,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:52:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 04:52:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:02,789 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2020-10-14 04:52:02,915 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-14 04:52:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:03,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:03,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:03,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:03,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:03,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:03,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:03,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:03,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:03,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:03,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:03,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166090629] [2020-10-14 04:52:03,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:03,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 04:52:03,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096009397] [2020-10-14 04:52:03,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 04:52:03,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:03,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 04:52:03,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:52:03,327 INFO L87 Difference]: Start difference. First operand 372 states and 417 transitions. Second operand 18 states. [2020-10-14 04:52:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:05,240 INFO L93 Difference]: Finished difference Result 486 states and 553 transitions. [2020-10-14 04:52:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:52:05,241 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-10-14 04:52:05,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:05,244 INFO L225 Difference]: With dead ends: 486 [2020-10-14 04:52:05,244 INFO L226 Difference]: Without dead ends: 484 [2020-10-14 04:52:05,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2020-10-14 04:52:05,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-14 04:52:05,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 436. [2020-10-14 04:52:05,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-14 04:52:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 490 transitions. [2020-10-14 04:52:05,284 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 490 transitions. Word has length 45 [2020-10-14 04:52:05,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:05,284 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 490 transitions. [2020-10-14 04:52:05,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 04:52:05,285 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 490 transitions. [2020-10-14 04:52:05,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:52:05,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:05,286 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:05,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 04:52:05,286 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:05,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:05,286 INFO L82 PathProgramCache]: Analyzing trace with hash 223711096, now seen corresponding path program 7 times [2020-10-14 04:52:05,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:05,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424529057] [2020-10-14 04:52:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:07,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:07,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:52:07,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:52:07,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2390 [2020-10-14 04:52:07,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:07,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:52:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 04:52:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:08,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:08,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:08,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:08,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:08,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:08,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:08,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:08,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:08,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:08,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424529057] [2020-10-14 04:52:08,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:08,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 04:52:08,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375246205] [2020-10-14 04:52:08,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 04:52:08,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:08,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 04:52:08,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:52:08,283 INFO L87 Difference]: Start difference. First operand 436 states and 490 transitions. Second operand 18 states. [2020-10-14 04:52:10,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:10,653 INFO L93 Difference]: Finished difference Result 492 states and 550 transitions. [2020-10-14 04:52:10,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 04:52:10,656 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-10-14 04:52:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:10,657 INFO L225 Difference]: With dead ends: 492 [2020-10-14 04:52:10,658 INFO L226 Difference]: Without dead ends: 490 [2020-10-14 04:52:10,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2020-10-14 04:52:10,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-14 04:52:10,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 346. [2020-10-14 04:52:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-14 04:52:10,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 392 transitions. [2020-10-14 04:52:10,688 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 392 transitions. Word has length 45 [2020-10-14 04:52:10,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:10,688 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 392 transitions. [2020-10-14 04:52:10,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 04:52:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 392 transitions. [2020-10-14 04:52:10,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:52:10,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:10,689 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:10,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 04:52:10,690 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:10,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:10,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1592974942, now seen corresponding path program 9 times [2020-10-14 04:52:10,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:10,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838686666] [2020-10-14 04:52:10,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:10,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:11,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:11,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:52:11,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:11,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1083 [2020-10-14 04:52:11,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:11,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:11,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:52:11,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:11,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 04:52:11,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:12,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:12,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:12,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:12,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:12,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:12,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:12,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:12,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:12,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838686666] [2020-10-14 04:52:12,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:12,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:52:12,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879626396] [2020-10-14 04:52:12,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:52:12,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:12,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:52:12,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:52:12,674 INFO L87 Difference]: Start difference. First operand 346 states and 392 transitions. Second operand 17 states. [2020-10-14 04:52:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:14,183 INFO L93 Difference]: Finished difference Result 507 states and 578 transitions. [2020-10-14 04:52:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 04:52:14,184 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-14 04:52:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:14,186 INFO L225 Difference]: With dead ends: 507 [2020-10-14 04:52:14,186 INFO L226 Difference]: Without dead ends: 494 [2020-10-14 04:52:14,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:52:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-14 04:52:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 407. [2020-10-14 04:52:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-14 04:52:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 457 transitions. [2020-10-14 04:52:14,221 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 457 transitions. Word has length 45 [2020-10-14 04:52:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:14,221 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 457 transitions. [2020-10-14 04:52:14,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:52:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 457 transitions. [2020-10-14 04:52:14,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 04:52:14,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:14,223 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:14,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 04:52:14,223 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:14,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1753650468, now seen corresponding path program 1 times [2020-10-14 04:52:14,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:14,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363800183] [2020-10-14 04:52:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:14,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:15,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:15,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:52:15,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1319 [2020-10-14 04:52:15,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:15,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:52:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:52:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:15,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:15,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:15,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:15,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:15,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:15,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:52:15,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:15,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:15,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:15,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:15,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:15,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 04:52:15,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363800183] [2020-10-14 04:52:15,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:15,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:52:15,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320598818] [2020-10-14 04:52:15,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:52:15,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:15,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:52:15,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:52:15,972 INFO L87 Difference]: Start difference. First operand 407 states and 457 transitions. Second operand 12 states. [2020-10-14 04:52:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:16,510 INFO L93 Difference]: Finished difference Result 575 states and 641 transitions. [2020-10-14 04:52:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:52:16,510 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-14 04:52:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:16,513 INFO L225 Difference]: With dead ends: 575 [2020-10-14 04:52:16,513 INFO L226 Difference]: Without dead ends: 494 [2020-10-14 04:52:16,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:52:16,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-14 04:52:16,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 407. [2020-10-14 04:52:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-14 04:52:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 451 transitions. [2020-10-14 04:52:16,543 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 451 transitions. Word has length 47 [2020-10-14 04:52:16,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:16,544 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 451 transitions. [2020-10-14 04:52:16,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:52:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 451 transitions. [2020-10-14 04:52:16,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:16,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:16,545 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:16,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 04:52:16,545 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:16,546 INFO L82 PathProgramCache]: Analyzing trace with hash 823348452, now seen corresponding path program 10 times [2020-10-14 04:52:16,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:16,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177268563] [2020-10-14 04:52:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:16,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:16,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:20,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:20,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:20,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:52:20,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3717 [2020-10-14 04:52:20,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:20,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:20,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:52:20,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:20,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:52:20,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:20,801 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-10-14 04:52:21,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:21,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:21,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:21,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:21,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:21,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:21,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:21,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:21,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:21,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:21,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:21,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:21,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177268563] [2020-10-14 04:52:21,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:21,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 04:52:21,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866866585] [2020-10-14 04:52:21,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 04:52:21,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:21,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 04:52:21,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:52:21,413 INFO L87 Difference]: Start difference. First operand 407 states and 451 transitions. Second operand 18 states. [2020-10-14 04:52:22,149 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-10-14 04:52:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:24,096 INFO L93 Difference]: Finished difference Result 464 states and 522 transitions. [2020-10-14 04:52:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 04:52:24,097 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-10-14 04:52:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:24,099 INFO L225 Difference]: With dead ends: 464 [2020-10-14 04:52:24,099 INFO L226 Difference]: Without dead ends: 451 [2020-10-14 04:52:24,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 04:52:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-14 04:52:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 407. [2020-10-14 04:52:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-14 04:52:24,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 451 transitions. [2020-10-14 04:52:24,141 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 451 transitions. Word has length 48 [2020-10-14 04:52:24,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:24,142 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 451 transitions. [2020-10-14 04:52:24,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 04:52:24,142 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 451 transitions. [2020-10-14 04:52:24,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:24,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:24,143 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:24,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 04:52:24,143 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:24,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:24,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1938434616, now seen corresponding path program 8 times [2020-10-14 04:52:24,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:24,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351271298] [2020-10-14 04:52:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:24,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:24,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:25,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:27,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:27,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:27,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:52:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3706 [2020-10-14 04:52:27,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:27,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 04:52:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:52:27,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:28,378 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-14 04:52:28,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:28,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:28,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:28,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:28,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:28,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:28,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:28,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351271298] [2020-10-14 04:52:28,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:28,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:52:28,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046373271] [2020-10-14 04:52:28,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:52:28,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:28,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:52:28,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:52:28,771 INFO L87 Difference]: Start difference. First operand 407 states and 451 transitions. Second operand 19 states. [2020-10-14 04:52:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:31,956 INFO L93 Difference]: Finished difference Result 760 states and 839 transitions. [2020-10-14 04:52:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 04:52:31,956 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-14 04:52:31,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:31,960 INFO L225 Difference]: With dead ends: 760 [2020-10-14 04:52:31,960 INFO L226 Difference]: Without dead ends: 758 [2020-10-14 04:52:31,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=103, Invalid=1157, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 04:52:31,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-10-14 04:52:32,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 575. [2020-10-14 04:52:32,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-14 04:52:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 637 transitions. [2020-10-14 04:52:32,003 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 637 transitions. Word has length 48 [2020-10-14 04:52:32,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:32,003 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 637 transitions. [2020-10-14 04:52:32,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:52:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 637 transitions. [2020-10-14 04:52:32,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:32,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:32,004 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:32,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 04:52:32,005 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:32,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:32,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1757790900, now seen corresponding path program 11 times [2020-10-14 04:52:32,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:32,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221938882] [2020-10-14 04:52:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:32,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:32,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:34,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:34,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:34,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:34,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2587 [2020-10-14 04:52:34,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:34,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:52:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:52:34,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:35,061 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-14 04:52:35,210 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-14 04:52:35,348 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-10-14 04:52:35,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:35,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:35,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:35,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:35,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:35,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:35,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:35,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:35,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:35,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:35,785 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:35,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221938882] [2020-10-14 04:52:35,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:35,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:52:35,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565834297] [2020-10-14 04:52:35,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:52:35,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:35,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:52:35,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:52:35,786 INFO L87 Difference]: Start difference. First operand 575 states and 637 transitions. Second operand 19 states. [2020-10-14 04:52:37,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:37,998 INFO L93 Difference]: Finished difference Result 677 states and 750 transitions. [2020-10-14 04:52:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 04:52:37,999 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-14 04:52:37,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:38,003 INFO L225 Difference]: With dead ends: 677 [2020-10-14 04:52:38,003 INFO L226 Difference]: Without dead ends: 675 [2020-10-14 04:52:38,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2020-10-14 04:52:38,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-14 04:52:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 639. [2020-10-14 04:52:38,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-14 04:52:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 709 transitions. [2020-10-14 04:52:38,055 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 709 transitions. Word has length 48 [2020-10-14 04:52:38,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:38,056 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 709 transitions. [2020-10-14 04:52:38,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:52:38,056 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 709 transitions. [2020-10-14 04:52:38,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:38,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:38,058 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:38,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 04:52:38,058 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:38,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1236834742, now seen corresponding path program 9 times [2020-10-14 04:52:38,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:38,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723223373] [2020-10-14 04:52:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:38,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:40,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:40,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:40,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:52:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-10-14 04:52:40,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:40,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 04:52:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 04:52:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:40,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:40,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:40,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:40,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:40,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:40,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:40,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:40,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:40,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:40,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:40,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:40,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723223373] [2020-10-14 04:52:40,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:40,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:52:40,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456492041] [2020-10-14 04:52:40,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:52:40,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:40,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:52:40,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:52:40,985 INFO L87 Difference]: Start difference. First operand 639 states and 709 transitions. Second operand 19 states. [2020-10-14 04:52:43,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:43,517 INFO L93 Difference]: Finished difference Result 821 states and 910 transitions. [2020-10-14 04:52:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 04:52:43,518 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-14 04:52:43,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:43,522 INFO L225 Difference]: With dead ends: 821 [2020-10-14 04:52:43,522 INFO L226 Difference]: Without dead ends: 809 [2020-10-14 04:52:43,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:52:43,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-10-14 04:52:43,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 752. [2020-10-14 04:52:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2020-10-14 04:52:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 831 transitions. [2020-10-14 04:52:43,575 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 831 transitions. Word has length 48 [2020-10-14 04:52:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:43,575 INFO L479 AbstractCegarLoop]: Abstraction has 752 states and 831 transitions. [2020-10-14 04:52:43,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:52:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 831 transitions. [2020-10-14 04:52:43,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:43,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:43,577 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:43,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 04:52:43,577 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:43,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:43,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1227635546, now seen corresponding path program 12 times [2020-10-14 04:52:43,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:43,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519010544] [2020-10-14 04:52:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:43,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:44,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:44,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:44,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:44,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:44,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1283 [2020-10-14 04:52:44,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:44,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:44,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 04:52:44,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:44,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:52:44,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:45,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:45,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:45,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:45,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:45,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:45,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:45,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:45,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:45,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519010544] [2020-10-14 04:52:45,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:45,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 04:52:45,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803836257] [2020-10-14 04:52:45,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 04:52:45,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:45,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 04:52:45,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:52:45,776 INFO L87 Difference]: Start difference. First operand 752 states and 831 transitions. Second operand 18 states. [2020-10-14 04:52:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:48,200 INFO L93 Difference]: Finished difference Result 856 states and 947 transitions. [2020-10-14 04:52:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 04:52:48,200 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-10-14 04:52:48,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:48,205 INFO L225 Difference]: With dead ends: 856 [2020-10-14 04:52:48,205 INFO L226 Difference]: Without dead ends: 854 [2020-10-14 04:52:48,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2020-10-14 04:52:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-10-14 04:52:48,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 797. [2020-10-14 04:52:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-10-14 04:52:48,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 879 transitions. [2020-10-14 04:52:48,262 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 879 transitions. Word has length 48 [2020-10-14 04:52:48,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:48,262 INFO L479 AbstractCegarLoop]: Abstraction has 797 states and 879 transitions. [2020-10-14 04:52:48,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 04:52:48,262 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 879 transitions. [2020-10-14 04:52:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:48,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:48,264 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:48,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 04:52:48,264 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:48,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:48,265 INFO L82 PathProgramCache]: Analyzing trace with hash 486192398, now seen corresponding path program 13 times [2020-10-14 04:52:48,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:48,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857362486] [2020-10-14 04:52:48,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:48,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:49,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:49,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:49,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1684 [2020-10-14 04:52:49,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:49,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 04:52:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:52:49,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:50,503 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-14 04:52:51,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:51,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:51,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:51,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:51,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:51,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:51,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:51,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:51,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:51,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857362486] [2020-10-14 04:52:51,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:51,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:52:51,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761232085] [2020-10-14 04:52:51,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:52:51,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:51,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:52:51,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:52:51,029 INFO L87 Difference]: Start difference. First operand 797 states and 879 transitions. Second operand 19 states. [2020-10-14 04:52:52,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:52,590 INFO L93 Difference]: Finished difference Result 873 states and 963 transitions. [2020-10-14 04:52:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:52:52,591 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-14 04:52:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:52,595 INFO L225 Difference]: With dead ends: 873 [2020-10-14 04:52:52,595 INFO L226 Difference]: Without dead ends: 844 [2020-10-14 04:52:52,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:52:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-14 04:52:52,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 794. [2020-10-14 04:52:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-10-14 04:52:52,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 872 transitions. [2020-10-14 04:52:52,661 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 872 transitions. Word has length 48 [2020-10-14 04:52:52,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:52,661 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 872 transitions. [2020-10-14 04:52:52,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:52:52,662 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 872 transitions. [2020-10-14 04:52:52,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:52,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:52,663 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:52,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 04:52:52,663 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:52,663 INFO L82 PathProgramCache]: Analyzing trace with hash -814149256, now seen corresponding path program 10 times [2020-10-14 04:52:52,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:52,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473268936] [2020-10-14 04:52:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:52,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:52,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:53,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:53,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:53,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:53,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-14 04:52:53,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:53,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:52:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:52:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:54,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:54,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:54,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:54,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:54,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:54,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 6 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:54,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473268936] [2020-10-14 04:52:54,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:54,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:52:54,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558753988] [2020-10-14 04:52:54,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:52:54,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:54,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:52:54,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:52:54,110 INFO L87 Difference]: Start difference. First operand 794 states and 872 transitions. Second operand 17 states. [2020-10-14 04:52:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:55,814 INFO L93 Difference]: Finished difference Result 819 states and 898 transitions. [2020-10-14 04:52:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:52:55,815 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2020-10-14 04:52:55,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:55,818 INFO L225 Difference]: With dead ends: 819 [2020-10-14 04:52:55,818 INFO L226 Difference]: Without dead ends: 709 [2020-10-14 04:52:55,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:52:55,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-14 04:52:55,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2020-10-14 04:52:55,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-10-14 04:52:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 781 transitions. [2020-10-14 04:52:55,881 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 781 transitions. Word has length 48 [2020-10-14 04:52:55,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:55,882 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 781 transitions. [2020-10-14 04:52:55,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:52:55,882 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 781 transitions. [2020-10-14 04:52:55,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 04:52:55,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:55,883 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:55,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 04:52:55,883 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:55,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:55,883 INFO L82 PathProgramCache]: Analyzing trace with hash 2074342624, now seen corresponding path program 14 times [2020-10-14 04:52:55,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:55,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857280527] [2020-10-14 04:52:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:55,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:56,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:56,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:59,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:59,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 04:52:59,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:52:59,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3223 [2020-10-14 04:52:59,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:59,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:52:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:52:59,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:59,694 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-10-14 04:52:59,851 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2020-10-14 04:53:00,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:00,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:00,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:00,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:00,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:00,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:00,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:00,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:00,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857280527] [2020-10-14 04:53:00,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:00,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:53:00,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798822429] [2020-10-14 04:53:00,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:53:00,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:00,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:53:00,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:53:00,312 INFO L87 Difference]: Start difference. First operand 709 states and 781 transitions. Second operand 20 states. [2020-10-14 04:53:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:04,324 INFO L93 Difference]: Finished difference Result 783 states and 866 transitions. [2020-10-14 04:53:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 04:53:04,324 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2020-10-14 04:53:04,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:04,327 INFO L225 Difference]: With dead ends: 783 [2020-10-14 04:53:04,327 INFO L226 Difference]: Without dead ends: 781 [2020-10-14 04:53:04,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 04:53:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-10-14 04:53:04,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 720. [2020-10-14 04:53:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-10-14 04:53:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 793 transitions. [2020-10-14 04:53:04,392 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 793 transitions. Word has length 51 [2020-10-14 04:53:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:04,392 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 793 transitions. [2020-10-14 04:53:04,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:53:04,392 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 793 transitions. [2020-10-14 04:53:04,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 04:53:04,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:04,394 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:04,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 04:53:04,394 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:04,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:04,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1105538508, now seen corresponding path program 11 times [2020-10-14 04:53:04,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:04,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756833162] [2020-10-14 04:53:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:04,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:05,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:07,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:08,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:08,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 04:53:08,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:53:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3681 [2020-10-14 04:53:08,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:08,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:53:08,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:08,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 04:53:08,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:08,736 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-14 04:53:09,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:09,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:09,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:09,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:09,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:09,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:09,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:09,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756833162] [2020-10-14 04:53:09,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:09,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:53:09,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108886740] [2020-10-14 04:53:09,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:53:09,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:09,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:53:09,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:53:09,275 INFO L87 Difference]: Start difference. First operand 720 states and 793 transitions. Second operand 20 states. [2020-10-14 04:53:13,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:13,088 INFO L93 Difference]: Finished difference Result 793 states and 877 transitions. [2020-10-14 04:53:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 04:53:13,089 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2020-10-14 04:53:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:13,092 INFO L225 Difference]: With dead ends: 793 [2020-10-14 04:53:13,093 INFO L226 Difference]: Without dead ends: 781 [2020-10-14 04:53:13,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 04:53:13,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-10-14 04:53:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 713. [2020-10-14 04:53:13,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-14 04:53:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 786 transitions. [2020-10-14 04:53:13,154 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 786 transitions. Word has length 51 [2020-10-14 04:53:13,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:13,155 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 786 transitions. [2020-10-14 04:53:13,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:53:13,155 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 786 transitions. [2020-10-14 04:53:13,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 04:53:13,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:13,156 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:13,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 04:53:13,156 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:13,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:13,157 INFO L82 PathProgramCache]: Analyzing trace with hash 151407480, now seen corresponding path program 15 times [2020-10-14 04:53:13,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:13,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133513883] [2020-10-14 04:53:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:13,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:14,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:17,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:17,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 04:53:17,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:53:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4522 [2020-10-14 04:53:17,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:17,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:53:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 04:53:17,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:18,227 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-10-14 04:53:18,374 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-10-14 04:53:18,520 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-10-14 04:53:19,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:19,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:19,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:19,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:19,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:19,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:53:19,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:19,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:19,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133513883] [2020-10-14 04:53:19,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:19,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:53:19,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002063564] [2020-10-14 04:53:19,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:53:19,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:19,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:53:19,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:53:19,102 INFO L87 Difference]: Start difference. First operand 713 states and 786 transitions. Second operand 20 states. [2020-10-14 04:53:21,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:21,388 INFO L93 Difference]: Finished difference Result 782 states and 864 transitions. [2020-10-14 04:53:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 04:53:21,389 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2020-10-14 04:53:21,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:21,393 INFO L225 Difference]: With dead ends: 782 [2020-10-14 04:53:21,393 INFO L226 Difference]: Without dead ends: 769 [2020-10-14 04:53:21,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:53:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-10-14 04:53:21,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 681. [2020-10-14 04:53:21,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-10-14 04:53:21,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 752 transitions. [2020-10-14 04:53:21,462 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 752 transitions. Word has length 51 [2020-10-14 04:53:21,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:21,462 INFO L479 AbstractCegarLoop]: Abstraction has 681 states and 752 transitions. [2020-10-14 04:53:21,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:53:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 752 transitions. [2020-10-14 04:53:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 04:53:21,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:21,463 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:21,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 04:53:21,463 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:21,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:21,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1266493644, now seen corresponding path program 12 times [2020-10-14 04:53:21,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:21,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419909309] [2020-10-14 04:53:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:21,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:23,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:25,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:25,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 04:53:25,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:53:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3612 [2020-10-14 04:53:25,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:25,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 04:53:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:53:25,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:25,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:25,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:25,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:25,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:25,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:25,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:25,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:25,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:25,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419909309] [2020-10-14 04:53:25,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:25,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:53:25,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565918010] [2020-10-14 04:53:25,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:53:25,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:25,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:53:25,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:53:25,920 INFO L87 Difference]: Start difference. First operand 681 states and 752 transitions. Second operand 20 states. [2020-10-14 04:53:29,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:29,499 INFO L93 Difference]: Finished difference Result 782 states and 859 transitions. [2020-10-14 04:53:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 04:53:29,500 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2020-10-14 04:53:29,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:29,504 INFO L225 Difference]: With dead ends: 782 [2020-10-14 04:53:29,504 INFO L226 Difference]: Without dead ends: 780 [2020-10-14 04:53:29,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 04:53:29,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-10-14 04:53:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 724. [2020-10-14 04:53:29,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-14 04:53:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 798 transitions. [2020-10-14 04:53:29,561 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 798 transitions. Word has length 51 [2020-10-14 04:53:29,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:29,561 INFO L479 AbstractCegarLoop]: Abstraction has 724 states and 798 transitions. [2020-10-14 04:53:29,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:53:29,561 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 798 transitions. [2020-10-14 04:53:29,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 04:53:29,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:29,562 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:29,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 04:53:29,562 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:29,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:29,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1138444790, now seen corresponding path program 13 times [2020-10-14 04:53:29,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:29,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609822668] [2020-10-14 04:53:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:29,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:29,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:32,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:32,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 04:53:32,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:53:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2623 [2020-10-14 04:53:32,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:32,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 04:53:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:53:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:32,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:32,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:32,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:32,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:32,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:32,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:32,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:32,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:32,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 7 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:32,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609822668] [2020-10-14 04:53:32,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:32,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:53:32,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676513028] [2020-10-14 04:53:32,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:53:32,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:32,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:53:32,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:53:32,860 INFO L87 Difference]: Start difference. First operand 724 states and 798 transitions. Second operand 19 states. [2020-10-14 04:53:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:35,284 INFO L93 Difference]: Finished difference Result 764 states and 840 transitions. [2020-10-14 04:53:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:53:35,284 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2020-10-14 04:53:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:35,288 INFO L225 Difference]: With dead ends: 764 [2020-10-14 04:53:35,288 INFO L226 Difference]: Without dead ends: 583 [2020-10-14 04:53:35,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:53:35,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-10-14 04:53:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2020-10-14 04:53:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-10-14 04:53:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 643 transitions. [2020-10-14 04:53:35,339 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 643 transitions. Word has length 51 [2020-10-14 04:53:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:35,339 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 643 transitions. [2020-10-14 04:53:35,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:53:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 643 transitions. [2020-10-14 04:53:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 04:53:35,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:35,341 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:35,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 04:53:35,341 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:35,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:35,341 INFO L82 PathProgramCache]: Analyzing trace with hash -508124042, now seen corresponding path program 16 times [2020-10-14 04:53:35,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:35,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278589371] [2020-10-14 04:53:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:35,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:35,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:37,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:37,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 04:53:37,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:53:37,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-14 04:53:37,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:37,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 04:53:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:53:37,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:37,705 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2020-10-14 04:53:37,872 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-10-14 04:53:38,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:38,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:38,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:38,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:38,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:38,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:38,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:38,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:38,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278589371] [2020-10-14 04:53:38,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:38,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:53:38,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511308363] [2020-10-14 04:53:38,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:53:38,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:38,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:53:38,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:53:38,315 INFO L87 Difference]: Start difference. First operand 581 states and 643 transitions. Second operand 20 states. [2020-10-14 04:53:41,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:41,167 INFO L93 Difference]: Finished difference Result 760 states and 854 transitions. [2020-10-14 04:53:41,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 04:53:41,168 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2020-10-14 04:53:41,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:41,172 INFO L225 Difference]: With dead ends: 760 [2020-10-14 04:53:41,172 INFO L226 Difference]: Without dead ends: 758 [2020-10-14 04:53:41,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:53:41,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-10-14 04:53:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 692. [2020-10-14 04:53:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-14 04:53:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 766 transitions. [2020-10-14 04:53:41,241 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 766 transitions. Word has length 51 [2020-10-14 04:53:41,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:41,241 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 766 transitions. [2020-10-14 04:53:41,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:53:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 766 transitions. [2020-10-14 04:53:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 04:53:41,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:41,242 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:41,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 04:53:41,242 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:41,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:41,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1735859256, now seen corresponding path program 17 times [2020-10-14 04:53:41,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:41,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699956590] [2020-10-14 04:53:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:41,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:43,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:43,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 04:53:43,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:53:43,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2367 [2020-10-14 04:53:43,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:43,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:53:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 04:53:43,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:44,173 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-14 04:53:44,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:44,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:44,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:44,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:44,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:44,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:44,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:44,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:44,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:44,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:44,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:44,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699956590] [2020-10-14 04:53:44,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:44,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:53:44,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692719283] [2020-10-14 04:53:44,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:53:44,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:44,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:53:44,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:53:44,677 INFO L87 Difference]: Start difference. First operand 692 states and 766 transitions. Second operand 19 states. [2020-10-14 04:53:46,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:46,972 INFO L93 Difference]: Finished difference Result 893 states and 1000 transitions. [2020-10-14 04:53:46,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 04:53:46,973 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2020-10-14 04:53:46,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:46,976 INFO L225 Difference]: With dead ends: 893 [2020-10-14 04:53:46,976 INFO L226 Difference]: Without dead ends: 772 [2020-10-14 04:53:46,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2020-10-14 04:53:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-10-14 04:53:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 692. [2020-10-14 04:53:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-14 04:53:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 769 transitions. [2020-10-14 04:53:47,054 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 769 transitions. Word has length 51 [2020-10-14 04:53:47,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:47,055 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 769 transitions. [2020-10-14 04:53:47,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:53:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 769 transitions. [2020-10-14 04:53:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:53:47,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:47,056 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:47,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 04:53:47,056 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:47,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:47,056 INFO L82 PathProgramCache]: Analyzing trace with hash -169387848, now seen corresponding path program 14 times [2020-10-14 04:53:47,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:47,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935720746] [2020-10-14 04:53:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:47,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:50,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:51,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:51,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 04:53:51,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:53:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4771 [2020-10-14 04:53:51,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:51,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:53:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:53:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:52,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:52,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:52,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:52,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:52,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:52,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:52,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:52,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 8 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:52,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935720746] [2020-10-14 04:53:52,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:52,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:53:52,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412561799] [2020-10-14 04:53:52,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:53:52,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:52,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:53:52,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:53:52,695 INFO L87 Difference]: Start difference. First operand 692 states and 769 transitions. Second operand 20 states. [2020-10-14 04:53:55,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:55,943 INFO L93 Difference]: Finished difference Result 719 states and 805 transitions. [2020-10-14 04:53:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:53:55,944 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 54 [2020-10-14 04:53:55,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:55,947 INFO L225 Difference]: With dead ends: 719 [2020-10-14 04:53:55,947 INFO L226 Difference]: Without dead ends: 538 [2020-10-14 04:53:55,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 04:53:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-10-14 04:53:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 514. [2020-10-14 04:53:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-14 04:53:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 579 transitions. [2020-10-14 04:53:55,998 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 579 transitions. Word has length 54 [2020-10-14 04:53:55,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:55,999 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 579 transitions. [2020-10-14 04:53:55,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:53:55,999 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 579 transitions. [2020-10-14 04:53:56,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:53:56,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:56,000 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:56,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 04:53:56,000 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:56,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:56,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1171554868, now seen corresponding path program 18 times [2020-10-14 04:53:56,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:56,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968779277] [2020-10-14 04:53:56,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:56,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:58,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:01,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:01,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 04:54:01,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:54:01,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4951 [2020-10-14 04:54:01,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:01,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:01,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 04:54:01,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:01,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:54:01,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:01,433 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-10-14 04:54:01,594 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-14 04:54:01,722 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-14 04:54:01,875 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-14 04:54:02,114 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 92 [2020-10-14 04:54:02,351 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-10-14 04:54:03,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:03,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:03,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:03,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:03,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:03,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:03,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:03,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:03,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:03,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968779277] [2020-10-14 04:54:03,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:03,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 04:54:03,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083024574] [2020-10-14 04:54:03,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 04:54:03,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:03,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 04:54:03,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:54:03,042 INFO L87 Difference]: Start difference. First operand 514 states and 579 transitions. Second operand 22 states. [2020-10-14 04:54:06,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:06,999 INFO L93 Difference]: Finished difference Result 814 states and 927 transitions. [2020-10-14 04:54:07,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 04:54:07,000 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-10-14 04:54:07,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:07,004 INFO L225 Difference]: With dead ends: 814 [2020-10-14 04:54:07,004 INFO L226 Difference]: Without dead ends: 812 [2020-10-14 04:54:07,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=117, Invalid=1365, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 04:54:07,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-14 04:54:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 713. [2020-10-14 04:54:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-14 04:54:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 798 transitions. [2020-10-14 04:54:07,086 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 798 transitions. Word has length 54 [2020-10-14 04:54:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:07,086 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 798 transitions. [2020-10-14 04:54:07,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 04:54:07,087 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 798 transitions. [2020-10-14 04:54:07,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:54:07,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:07,088 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:07,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 04:54:07,089 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:07,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:07,089 INFO L82 PathProgramCache]: Analyzing trace with hash -56468704, now seen corresponding path program 15 times [2020-10-14 04:54:07,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:07,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955408132] [2020-10-14 04:54:07,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:07,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:09,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:09,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:11,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:12,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:12,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 04:54:12,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:54:12,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 04:54:12,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:12,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:12,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 04:54:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:54:12,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:12,803 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-14 04:54:12,969 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-14 04:54:13,136 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-14 04:54:13,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:13,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:13,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:13,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:13,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:13,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:13,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:13,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:13,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:13,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955408132] [2020-10-14 04:54:13,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:13,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 04:54:13,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369628306] [2020-10-14 04:54:13,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 04:54:13,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 04:54:13,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:54:13,634 INFO L87 Difference]: Start difference. First operand 713 states and 798 transitions. Second operand 22 states. [2020-10-14 04:54:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:18,480 INFO L93 Difference]: Finished difference Result 1063 states and 1179 transitions. [2020-10-14 04:54:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 04:54:18,481 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-10-14 04:54:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:18,486 INFO L225 Difference]: With dead ends: 1063 [2020-10-14 04:54:18,486 INFO L226 Difference]: Without dead ends: 1061 [2020-10-14 04:54:18,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 04:54:18,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2020-10-14 04:54:18,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 974. [2020-10-14 04:54:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 974 states. [2020-10-14 04:54:18,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1086 transitions. [2020-10-14 04:54:18,576 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1086 transitions. Word has length 54 [2020-10-14 04:54:18,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:18,576 INFO L479 AbstractCegarLoop]: Abstraction has 974 states and 1086 transitions. [2020-10-14 04:54:18,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 04:54:18,577 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1086 transitions. [2020-10-14 04:54:18,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:54:18,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:18,578 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:18,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 04:54:18,578 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:18,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:18,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1831086390, now seen corresponding path program 19 times [2020-10-14 04:54:18,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:18,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031340736] [2020-10-14 04:54:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:18,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:20,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:22,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:22,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 04:54:22,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:54:22,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3756 [2020-10-14 04:54:22,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:22,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 04:54:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 04:54:22,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:22,782 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-10-14 04:54:22,926 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-10-14 04:54:23,122 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2020-10-14 04:54:23,337 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 87 [2020-10-14 04:54:23,542 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2020-10-14 04:54:24,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:24,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:24,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:24,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:24,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:24,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:24,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:24,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:24,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:24,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:24,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:24,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031340736] [2020-10-14 04:54:24,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:24,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 04:54:24,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643632029] [2020-10-14 04:54:24,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 04:54:24,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:24,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 04:54:24,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:54:24,134 INFO L87 Difference]: Start difference. First operand 974 states and 1086 transitions. Second operand 21 states. [2020-10-14 04:54:27,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:27,346 INFO L93 Difference]: Finished difference Result 1114 states and 1251 transitions. [2020-10-14 04:54:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 04:54:27,347 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 54 [2020-10-14 04:54:27,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:27,350 INFO L225 Difference]: With dead ends: 1114 [2020-10-14 04:54:27,350 INFO L226 Difference]: Without dead ends: 1101 [2020-10-14 04:54:27,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 04:54:27,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-10-14 04:54:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1014. [2020-10-14 04:54:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-10-14 04:54:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1126 transitions. [2020-10-14 04:54:27,446 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1126 transitions. Word has length 54 [2020-10-14 04:54:27,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:27,446 INFO L479 AbstractCegarLoop]: Abstraction has 1014 states and 1126 transitions. [2020-10-14 04:54:27,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 04:54:27,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1126 transitions. [2020-10-14 04:54:27,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:54:27,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:27,448 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:27,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 04:54:27,448 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:27,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:27,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1527983072, now seen corresponding path program 16 times [2020-10-14 04:54:27,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:27,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066648551] [2020-10-14 04:54:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking...