/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/dll-sorted-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:49:39,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:49:40,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:49:40,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:49:40,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:49:40,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:49:40,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:49:40,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:49:40,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:49:40,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:49:40,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:49:40,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:49:40,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:49:40,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:49:40,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:49:40,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:49:40,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:49:40,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:49:40,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:49:40,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:49:40,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:49:40,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:49:40,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:49:40,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:49:40,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:49:40,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:49:40,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:49:40,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:49:40,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:49:40,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:49:40,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:49:40,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:49:40,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:49:40,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:49:40,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:49:40,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:49:40,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:49:40,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:49:40,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:49:40,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:49:40,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:49:40,119 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 04:49:40,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:49:40,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:49:40,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:49:40,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:49:40,160 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:49:40,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:49:40,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:49:40,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:49:40,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:49:40,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:49:40,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:49:40,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:49:40,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:49:40,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:49:40,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:49:40,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:49:40,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:49:40,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:49:40,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:49:40,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:49:40,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:49:40,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:49:40,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:49:40,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:49:40,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:49:40,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:49:40,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:49:40,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:49:40,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:49:40,166 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 04:49:40,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:49:40,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:49:40,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:49:40,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:49:40,528 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:49:40,529 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-2.i [2020-10-14 04:49:40,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/758d15e21/ced9492cfa714c14b603b8e95bb1673c/FLAG63723133c [2020-10-14 04:49:41,201 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:49:41,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-2.i [2020-10-14 04:49:41,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/758d15e21/ced9492cfa714c14b603b8e95bb1673c/FLAG63723133c [2020-10-14 04:49:41,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/758d15e21/ced9492cfa714c14b603b8e95bb1673c [2020-10-14 04:49:41,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:49:41,549 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:49:41,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:49:41,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:49:41,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:49:41,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:49:41" (1/1) ... [2020-10-14 04:49:41,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b93891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:41, skipping insertion in model container [2020-10-14 04:49:41,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:49:41" (1/1) ... [2020-10-14 04:49:41,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:49:41,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:49:42,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:49:42,117 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:49:42,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:49:42,226 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:49:42,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:42 WrapperNode [2020-10-14 04:49:42,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:49:42,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:49:42,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:49:42,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:49:42,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:42" (1/1) ... [2020-10-14 04:49:42,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:42" (1/1) ... [2020-10-14 04:49:42,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:42" (1/1) ... [2020-10-14 04:49:42,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:42" (1/1) ... [2020-10-14 04:49:42,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:42" (1/1) ... [2020-10-14 04:49:42,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:42" (1/1) ... [2020-10-14 04:49:42,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:42" (1/1) ... [2020-10-14 04:49:42,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:49:42,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:49:42,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:49:42,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:49:42,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:42" (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 04:49:42,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:49:42,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:49:42,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:49:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:49:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:49:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:49:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:49:42,373 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:49:42,373 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:49:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:49:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:49:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:49:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:49:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:49:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:49:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:49:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:49:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:49:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:49:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:49:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:49:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:49:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:49:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:49:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:49:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:49:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:49:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:49:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:49:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:49:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:49:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:49:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:49:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:49:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:49:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:49:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:49:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:49:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:49:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:49:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:49:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:49:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:49:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:49:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:49:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:49:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:49:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:49:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:49:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:49:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:49:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:49:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:49:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:49:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:49:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:49:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:49:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:49:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:49:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:49:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:49:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 04:49:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:49:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:49:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 04:49:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:49:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:49:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 04:49:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:49:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:49:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:49:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:49:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:49:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:49:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:49:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:49:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:49:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:49:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:49:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:49:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:49:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:49:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:49:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:49:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:49:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:49:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:49:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:49:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:49:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:49:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:49:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:49:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:49:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:49:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:49:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:49:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:49:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:49:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:49:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:49:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:49:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:49:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:49:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:49:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:49:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:49:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:49:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:49:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:49:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:49:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:49:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:49:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:49:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:49:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:49:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:49:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:49:43,010 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:49:43,010 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-14 04:49:43,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:49:43 BoogieIcfgContainer [2020-10-14 04:49:43,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:49:43,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:49:43,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:49:43,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:49:43,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:49:41" (1/3) ... [2020-10-14 04:49:43,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49aa5384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:49:43, skipping insertion in model container [2020-10-14 04:49:43,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:42" (2/3) ... [2020-10-14 04:49:43,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49aa5384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:49:43, skipping insertion in model container [2020-10-14 04:49:43,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:49:43" (3/3) ... [2020-10-14 04:49:43,024 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2020-10-14 04:49:43,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:49:43,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-14 04:49:43,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-14 04:49:43,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:49:43,087 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:49:43,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:49:43,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:49:43,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:49:43,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:49:43,088 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:49:43,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:49:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-14 04:49:43,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 04:49:43,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:43,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:43,121 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:43,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:43,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1780468538, now seen corresponding path program 1 times [2020-10-14 04:49:43,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:43,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162576852] [2020-10-14 04:49:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:43,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:43,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:43,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 04:49:43,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:43,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-14 04:49:43,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:43,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:49:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:49:43,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:43,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:43,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:43,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:43,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:43,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:49:43,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:43,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:43,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:43,688 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 04:49:43,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162576852] [2020-10-14 04:49:43,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:43,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:49:43,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076497095] [2020-10-14 04:49:43,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 04:49:43,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:43,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 04:49:43,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:49:43,719 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2020-10-14 04:49:43,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:43,895 INFO L93 Difference]: Finished difference Result 112 states and 178 transitions. [2020-10-14 04:49:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:49:43,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 04:49:43,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:43,907 INFO L225 Difference]: With dead ends: 112 [2020-10-14 04:49:43,908 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 04:49:43,912 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 04:49:43,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 04:49:43,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-14 04:49:43,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 04:49:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-14 04:49:43,956 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 10 [2020-10-14 04:49:43,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:43,957 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-14 04:49:43,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 04:49:43,957 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-14 04:49:43,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-14 04:49:43,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:43,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:43,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:49:43,959 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:43,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:43,959 INFO L82 PathProgramCache]: Analyzing trace with hash -658139069, now seen corresponding path program 1 times [2020-10-14 04:49:43,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:43,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525542736] [2020-10-14 04:49:43,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:44,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:44,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:44,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:49:44,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 04:49:44,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:44,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:49:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 04:49:44,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:44,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:44,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:44,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:44,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:44,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:44,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:49:44,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:44,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:44,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:44,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:44,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:44,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:44,121 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 04:49:44,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525542736] [2020-10-14 04:49:44,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:44,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:49:44,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596742794] [2020-10-14 04:49:44,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:49:44,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:44,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:49:44,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:44,126 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 4 states. [2020-10-14 04:49:44,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:44,269 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2020-10-14 04:49:44,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:49:44,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-14 04:49:44,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:44,271 INFO L225 Difference]: With dead ends: 107 [2020-10-14 04:49:44,271 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 04:49:44,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:44,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 04:49:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-14 04:49:44,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 04:49:44,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-14 04:49:44,283 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2020-10-14 04:49:44,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:44,283 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-14 04:49:44,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:49:44,283 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-14 04:49:44,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 04:49:44,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:44,284 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:44,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:49:44,285 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:44,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:44,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1481014552, now seen corresponding path program 1 times [2020-10-14 04:49:44,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:44,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717496720] [2020-10-14 04:49:44,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:44,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:44,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 04:49:44,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:44,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 04:49:44,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:44,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:49:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:49:44,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:44,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:44,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:44,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:44,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:44,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:44,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:49:44,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:44,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:44,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:44,475 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 04:49:44,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717496720] [2020-10-14 04:49:44,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:44,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:49:44,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720491058] [2020-10-14 04:49:44,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:49:44,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:44,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:49:44,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:49:44,478 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-10-14 04:49:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:44,720 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2020-10-14 04:49:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:49:44,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-14 04:49:44,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:44,723 INFO L225 Difference]: With dead ends: 91 [2020-10-14 04:49:44,723 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 04:49:44,724 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 04:49:44,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 04:49:44,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 56. [2020-10-14 04:49:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 04:49:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-14 04:49:44,745 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 15 [2020-10-14 04:49:44,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:44,746 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-14 04:49:44,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:49:44,746 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-14 04:49:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 04:49:44,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:44,748 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:44,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:49:44,748 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:44,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:44,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1774425742, now seen corresponding path program 1 times [2020-10-14 04:49:44,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:44,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839199258] [2020-10-14 04:49:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:44,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:45,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:45,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 04:49:45,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:45,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-14 04:49:45,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:45,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:49:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:49:45,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:45,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:45,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:45,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:45,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:45,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:45,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:45,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:45,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:45,367 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 04:49:45,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839199258] [2020-10-14 04:49:45,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:45,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:49:45,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892895780] [2020-10-14 04:49:45,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:49:45,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:45,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:49:45,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:49:45,370 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 9 states. [2020-10-14 04:49:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:45,980 INFO L93 Difference]: Finished difference Result 102 states and 129 transitions. [2020-10-14 04:49:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:49:45,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-14 04:49:45,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:45,982 INFO L225 Difference]: With dead ends: 102 [2020-10-14 04:49:45,982 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 04:49:45,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:49:45,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 04:49:45,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2020-10-14 04:49:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 04:49:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2020-10-14 04:49:45,993 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 25 [2020-10-14 04:49:45,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:45,994 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2020-10-14 04:49:45,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:49:45,994 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2020-10-14 04:49:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 04:49:45,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:45,995 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:45,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:49:45,996 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:45,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:45,996 INFO L82 PathProgramCache]: Analyzing trace with hash -783280294, now seen corresponding path program 1 times [2020-10-14 04:49:45,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:45,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002956569] [2020-10-14 04:49:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:46,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:46,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:47,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:47,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:49:47,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:49:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-10-14 04:49:47,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:47,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:49:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:49:47,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:47,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:47,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:47,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:47,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:47,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:47,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:47,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:47,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:47,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:49:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:47,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002956569] [2020-10-14 04:49:47,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:47,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:49:47,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920979651] [2020-10-14 04:49:47,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:49:47,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:47,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:49:47,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:49:47,432 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 9 states. [2020-10-14 04:49:48,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:48,067 INFO L93 Difference]: Finished difference Result 138 states and 172 transitions. [2020-10-14 04:49:48,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:49:48,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-14 04:49:48,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:48,071 INFO L225 Difference]: With dead ends: 138 [2020-10-14 04:49:48,071 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 04:49:48,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:49:48,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 04:49:48,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2020-10-14 04:49:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 04:49:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2020-10-14 04:49:48,084 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 28 [2020-10-14 04:49:48,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:48,084 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2020-10-14 04:49:48,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:49:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2020-10-14 04:49:48,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 04:49:48,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:48,086 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:48,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:49:48,086 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:48,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:48,087 INFO L82 PathProgramCache]: Analyzing trace with hash -538281373, now seen corresponding path program 1 times [2020-10-14 04:49:48,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:48,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378059523] [2020-10-14 04:49:48,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:48,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:48,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:48,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 04:49:48,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:48,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-14 04:49:48,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:48,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:49:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:49:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:48,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:48,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:48,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:48,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:48,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:48,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:48,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:48,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:48,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378059523] [2020-10-14 04:49:48,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:48,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:49:48,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173489502] [2020-10-14 04:49:48,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:49:48,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:48,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:49:48,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:49:48,776 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand 10 states. [2020-10-14 04:49:49,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:49,244 INFO L93 Difference]: Finished difference Result 181 states and 221 transitions. [2020-10-14 04:49:49,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:49:49,245 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-14 04:49:49,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:49,246 INFO L225 Difference]: With dead ends: 181 [2020-10-14 04:49:49,246 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 04:49:49,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:49:49,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 04:49:49,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 95. [2020-10-14 04:49:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 04:49:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 119 transitions. [2020-10-14 04:49:49,258 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 119 transitions. Word has length 29 [2020-10-14 04:49:49,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:49,259 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 119 transitions. [2020-10-14 04:49:49,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:49:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 119 transitions. [2020-10-14 04:49:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 04:49:49,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:49,261 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:49,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:49:49,261 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:49,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:49,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1347627999, now seen corresponding path program 1 times [2020-10-14 04:49:49,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:49,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854671893] [2020-10-14 04:49:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:49,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:49,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:49,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:50,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:50,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 04:49:50,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:49:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1312 [2020-10-14 04:49:50,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:50,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:49:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 04:49:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:49:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:50,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:50,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:50,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:50,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:50,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:50,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:50,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:50,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:50,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:50,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 04:49:50,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854671893] [2020-10-14 04:49:50,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:50,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:49:50,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822699202] [2020-10-14 04:49:50,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:49:50,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:50,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:49:50,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:49:50,653 INFO L87 Difference]: Start difference. First operand 95 states and 119 transitions. Second operand 6 states. [2020-10-14 04:49:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:50,859 INFO L93 Difference]: Finished difference Result 148 states and 183 transitions. [2020-10-14 04:49:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:49:50,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-14 04:49:50,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:50,861 INFO L225 Difference]: With dead ends: 148 [2020-10-14 04:49:50,861 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 04:49:50,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:49:50,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 04:49:50,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2020-10-14 04:49:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 04:49:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 121 transitions. [2020-10-14 04:49:50,871 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 121 transitions. Word has length 29 [2020-10-14 04:49:50,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:50,871 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 121 transitions. [2020-10-14 04:49:50,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:49:50,872 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 121 transitions. [2020-10-14 04:49:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 04:49:50,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:50,873 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] [2020-10-14 04:49:50,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:49:50,873 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:50,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1731682651, now seen corresponding path program 1 times [2020-10-14 04:49:50,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:50,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127557028] [2020-10-14 04:49:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:50,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:51,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:51,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 04:49:51,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:51,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-14 04:49:51,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:51,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:51,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:49:51,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:51,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:49:51,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:51,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:51,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:51,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:51,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:51,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:51,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:51,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:51,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:51,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:51,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127557028] [2020-10-14 04:49:51,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:51,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:49:51,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479373482] [2020-10-14 04:49:51,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:49:51,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:51,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:49:51,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:49:51,449 INFO L87 Difference]: Start difference. First operand 96 states and 121 transitions. Second operand 11 states. [2020-10-14 04:49:52,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:52,188 INFO L93 Difference]: Finished difference Result 179 states and 225 transitions. [2020-10-14 04:49:52,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:49:52,189 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-14 04:49:52,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:52,190 INFO L225 Difference]: With dead ends: 179 [2020-10-14 04:49:52,190 INFO L226 Difference]: Without dead ends: 177 [2020-10-14 04:49:52,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:49:52,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-14 04:49:52,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 112. [2020-10-14 04:49:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 04:49:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 144 transitions. [2020-10-14 04:49:52,202 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 144 transitions. Word has length 29 [2020-10-14 04:49:52,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:52,202 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 144 transitions. [2020-10-14 04:49:52,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:49:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 144 transitions. [2020-10-14 04:49:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 04:49:52,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:52,210 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:52,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:49:52,211 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:52,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:52,211 INFO L82 PathProgramCache]: Analyzing trace with hash 816547758, now seen corresponding path program 1 times [2020-10-14 04:49:52,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:52,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963115301] [2020-10-14 04:49:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:52,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:52,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:52,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:53,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:54,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:54,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:49:54,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:49:54,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2435 [2020-10-14 04:49:54,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:54,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:54,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:49:54,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:54,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:49:54,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:54,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:54,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:54,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:54,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:54,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:54,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:54,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:54,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:54,754 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 04:49:54,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963115301] [2020-10-14 04:49:54,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:54,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:49:54,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042005481] [2020-10-14 04:49:54,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:49:54,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:54,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:49:54,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:49:54,761 INFO L87 Difference]: Start difference. First operand 112 states and 144 transitions. Second operand 8 states. [2020-10-14 04:49:55,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:55,157 INFO L93 Difference]: Finished difference Result 177 states and 220 transitions. [2020-10-14 04:49:55,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:49:55,158 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-14 04:49:55,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:55,160 INFO L225 Difference]: With dead ends: 177 [2020-10-14 04:49:55,161 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 04:49:55,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:49:55,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 04:49:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 121. [2020-10-14 04:49:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 04:49:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2020-10-14 04:49:55,180 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 31 [2020-10-14 04:49:55,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:55,183 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2020-10-14 04:49:55,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:49:55,183 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2020-10-14 04:49:55,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 04:49:55,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:55,191 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:55,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:49:55,192 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:55,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:55,192 INFO L82 PathProgramCache]: Analyzing trace with hash 7201132, now seen corresponding path program 1 times [2020-10-14 04:49:55,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:55,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067419592] [2020-10-14 04:49:55,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:55,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:55,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:55,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:49:55,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:55,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-14 04:49:55,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:55,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:55,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:49:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:49:55,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:56,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:56,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:56,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:56,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:56,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:56,124 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 04:49:56,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067419592] [2020-10-14 04:49:56,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:56,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:49:56,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68655229] [2020-10-14 04:49:56,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:49:56,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:56,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:49:56,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:49:56,126 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand 11 states. [2020-10-14 04:49:56,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:56,984 INFO L93 Difference]: Finished difference Result 240 states and 293 transitions. [2020-10-14 04:49:56,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:49:56,984 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-14 04:49:56,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:56,986 INFO L225 Difference]: With dead ends: 240 [2020-10-14 04:49:56,986 INFO L226 Difference]: Without dead ends: 238 [2020-10-14 04:49:56,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:49:56,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-14 04:49:57,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 148. [2020-10-14 04:49:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 04:49:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 195 transitions. [2020-10-14 04:49:57,002 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 195 transitions. Word has length 31 [2020-10-14 04:49:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:57,002 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 195 transitions. [2020-10-14 04:49:57,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:49:57,003 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 195 transitions. [2020-10-14 04:49:57,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 04:49:57,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:57,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:57,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:49:57,006 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:57,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:57,006 INFO L82 PathProgramCache]: Analyzing trace with hash -389000434, now seen corresponding path program 2 times [2020-10-14 04:49:57,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:57,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331964431] [2020-10-14 04:49:57,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:57,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:57,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:49:57,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:57,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-14 04:49:57,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:57,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:49:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:49:57,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:57,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:57,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:57,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:57,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:57,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:57,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:57,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:57,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:57,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:49:57,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331964431] [2020-10-14 04:49:57,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:57,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:49:57,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402934621] [2020-10-14 04:49:57,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:49:57,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:57,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:49:57,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:49:57,508 INFO L87 Difference]: Start difference. First operand 148 states and 195 transitions. Second operand 9 states. [2020-10-14 04:49:57,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:57,967 INFO L93 Difference]: Finished difference Result 221 states and 286 transitions. [2020-10-14 04:49:57,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:49:57,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-14 04:49:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:57,970 INFO L225 Difference]: With dead ends: 221 [2020-10-14 04:49:57,970 INFO L226 Difference]: Without dead ends: 159 [2020-10-14 04:49:57,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:49:57,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-14 04:49:57,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 147. [2020-10-14 04:49:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 04:49:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 189 transitions. [2020-10-14 04:49:57,981 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 189 transitions. Word has length 31 [2020-10-14 04:49:57,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:57,981 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 189 transitions. [2020-10-14 04:49:57,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:49:57,981 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 189 transitions. [2020-10-14 04:49:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:49:57,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:57,982 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:57,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:49:57,982 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:57,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:57,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1224419173, now seen corresponding path program 1 times [2020-10-14 04:49:57,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:57,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103094721] [2020-10-14 04:49:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:58,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:58,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:58,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:49:58,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 04:49:58,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:58,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:49:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:49:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:58,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:58,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:58,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:58,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:58,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:58,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:49:58,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:58,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:58,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:58,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:58,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:58,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103094721] [2020-10-14 04:49:58,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:58,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:49:58,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529872408] [2020-10-14 04:49:58,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:49:58,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:58,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:49:58,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:49:58,597 INFO L87 Difference]: Start difference. First operand 147 states and 189 transitions. Second operand 11 states. [2020-10-14 04:49:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:59,658 INFO L93 Difference]: Finished difference Result 238 states and 295 transitions. [2020-10-14 04:49:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:49:59,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-14 04:49:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:59,661 INFO L225 Difference]: With dead ends: 238 [2020-10-14 04:49:59,662 INFO L226 Difference]: Without dead ends: 236 [2020-10-14 04:49:59,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:49:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-14 04:49:59,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 156. [2020-10-14 04:49:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-14 04:49:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2020-10-14 04:49:59,674 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 32 [2020-10-14 04:49:59,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:59,675 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2020-10-14 04:49:59,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:49:59,675 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2020-10-14 04:49:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:49:59,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:59,676 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:59,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:49:59,676 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:59,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:59,677 INFO L82 PathProgramCache]: Analyzing trace with hash 222743739, now seen corresponding path program 1 times [2020-10-14 04:49:59,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:59,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165194758] [2020-10-14 04:49:59,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:59,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:59,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:00,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:00,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:50:00,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-14 04:50:00,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:00,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:50:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 04:50:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:50:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:00,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:00,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:00,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:00,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:00,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:00,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:00,716 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 04:50:00,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165194758] [2020-10-14 04:50:00,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:00,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:50:00,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504682755] [2020-10-14 04:50:00,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:50:00,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:00,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:50:00,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:50:00,718 INFO L87 Difference]: Start difference. First operand 156 states and 202 transitions. Second operand 6 states. [2020-10-14 04:50:00,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:00,902 INFO L93 Difference]: Finished difference Result 169 states and 217 transitions. [2020-10-14 04:50:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:50:00,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-14 04:50:00,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:00,904 INFO L225 Difference]: With dead ends: 169 [2020-10-14 04:50:00,904 INFO L226 Difference]: Without dead ends: 167 [2020-10-14 04:50:00,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:50:00,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-14 04:50:00,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 161. [2020-10-14 04:50:00,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 04:50:00,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2020-10-14 04:50:00,917 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 32 [2020-10-14 04:50:00,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:00,917 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2020-10-14 04:50:00,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:50:00,918 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2020-10-14 04:50:00,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:50:00,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:00,918 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:00,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:50:00,919 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:00,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:00,919 INFO L82 PathProgramCache]: Analyzing trace with hash 280002041, now seen corresponding path program 1 times [2020-10-14 04:50:00,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:00,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091729126] [2020-10-14 04:50:00,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:00,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:00,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:01,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:01,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:01,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:01,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:01,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:50:01,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:50:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-14 04:50:01,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:01,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:50:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:50:01,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:01,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:01,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:01,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:01,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:01,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:01,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:01,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:01,880 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 04:50:01,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091729126] [2020-10-14 04:50:01,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:01,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:50:01,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755676835] [2020-10-14 04:50:01,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:50:01,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:01,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:50:01,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:50:01,882 INFO L87 Difference]: Start difference. First operand 161 states and 209 transitions. Second operand 6 states. [2020-10-14 04:50:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:02,126 INFO L93 Difference]: Finished difference Result 214 states and 267 transitions. [2020-10-14 04:50:02,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:50:02,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-14 04:50:02,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:02,128 INFO L225 Difference]: With dead ends: 214 [2020-10-14 04:50:02,129 INFO L226 Difference]: Without dead ends: 183 [2020-10-14 04:50:02,129 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 04:50:02,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-14 04:50:02,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 162. [2020-10-14 04:50:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-14 04:50:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 208 transitions. [2020-10-14 04:50:02,144 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 208 transitions. Word has length 32 [2020-10-14 04:50:02,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:02,145 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 208 transitions. [2020-10-14 04:50:02,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:50:02,146 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 208 transitions. [2020-10-14 04:50:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:02,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:02,147 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 04:50:02,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:50:02,147 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:02,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:02,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1570859960, now seen corresponding path program 2 times [2020-10-14 04:50:02,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:02,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296593524] [2020-10-14 04:50:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:02,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:02,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:02,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:02,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-14 04:50:02,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:02,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:50:02,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:02,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:02,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:02,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:02,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:02,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:02,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:02,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:02,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:02,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296593524] [2020-10-14 04:50:02,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:02,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:02,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718625568] [2020-10-14 04:50:02,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:02,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:02,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:02,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:02,947 INFO L87 Difference]: Start difference. First operand 162 states and 208 transitions. Second operand 11 states. [2020-10-14 04:50:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:03,652 INFO L93 Difference]: Finished difference Result 310 states and 389 transitions. [2020-10-14 04:50:03,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:50:03,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-14 04:50:03,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:03,654 INFO L225 Difference]: With dead ends: 310 [2020-10-14 04:50:03,654 INFO L226 Difference]: Without dead ends: 247 [2020-10-14 04:50:03,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-14 04:50:03,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 177. [2020-10-14 04:50:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 04:50:03,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 228 transitions. [2020-10-14 04:50:03,671 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 228 transitions. Word has length 33 [2020-10-14 04:50:03,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:03,671 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 228 transitions. [2020-10-14 04:50:03,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:03,672 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 228 transitions. [2020-10-14 04:50:03,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:03,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:03,673 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:03,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 04:50:03,673 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:03,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:03,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1669516016, now seen corresponding path program 1 times [2020-10-14 04:50:03,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:03,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933660268] [2020-10-14 04:50:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:03,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:04,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:04,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:04,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-14 04:50:04,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:04,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:50:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 04:50:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:50:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:04,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:04,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:04,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:04,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:04,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:04,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:04,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:04,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:04,559 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 04:50:04,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933660268] [2020-10-14 04:50:04,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:04,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:50:04,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506152990] [2020-10-14 04:50:04,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:50:04,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:04,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:50:04,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:50:04,561 INFO L87 Difference]: Start difference. First operand 177 states and 228 transitions. Second operand 6 states. [2020-10-14 04:50:04,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:04,737 INFO L93 Difference]: Finished difference Result 178 states and 229 transitions. [2020-10-14 04:50:04,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:50:04,738 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-14 04:50:04,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:04,739 INFO L225 Difference]: With dead ends: 178 [2020-10-14 04:50:04,739 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 04:50:04,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:50:04,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 04:50:04,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2020-10-14 04:50:04,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-14 04:50:04,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 226 transitions. [2020-10-14 04:50:04,754 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 226 transitions. Word has length 33 [2020-10-14 04:50:04,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:04,754 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 226 transitions. [2020-10-14 04:50:04,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:50:04,754 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 226 transitions. [2020-10-14 04:50:04,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:04,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:04,755 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 04:50:04,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 04:50:04,756 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:04,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:04,756 INFO L82 PathProgramCache]: Analyzing trace with hash 793625404, now seen corresponding path program 2 times [2020-10-14 04:50:04,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:04,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643765414] [2020-10-14 04:50:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:05,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:05,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:05,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:05,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-10-14 04:50:05,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:05,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 04:50:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:05,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:05,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:05,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:05,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:05,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:05,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:05,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643765414] [2020-10-14 04:50:05,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:05,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:05,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449958622] [2020-10-14 04:50:05,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:05,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:05,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:05,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:05,614 INFO L87 Difference]: Start difference. First operand 175 states and 226 transitions. Second operand 12 states. [2020-10-14 04:50:06,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:06,786 INFO L93 Difference]: Finished difference Result 272 states and 346 transitions. [2020-10-14 04:50:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:50:06,787 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-14 04:50:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:06,788 INFO L225 Difference]: With dead ends: 272 [2020-10-14 04:50:06,789 INFO L226 Difference]: Without dead ends: 270 [2020-10-14 04:50:06,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:50:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-14 04:50:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 194. [2020-10-14 04:50:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-14 04:50:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 253 transitions. [2020-10-14 04:50:06,810 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 253 transitions. Word has length 33 [2020-10-14 04:50:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:06,810 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 253 transitions. [2020-10-14 04:50:06,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 253 transitions. [2020-10-14 04:50:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:50:06,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:06,812 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:06,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 04:50:06,812 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:06,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:06,812 INFO L82 PathProgramCache]: Analyzing trace with hash -691499361, now seen corresponding path program 1 times [2020-10-14 04:50:06,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:06,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353452523] [2020-10-14 04:50:06,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:06,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:06,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:07,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:07,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:08,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:08,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:50:08,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:50:08,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1735 [2020-10-14 04:50:08,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:08,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:08,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:50:08,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 04:50:08,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:50:08,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:08,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:08,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:08,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:08,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:08,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:08,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:08,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:08,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:08,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:08,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:08,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:08,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:08,608 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 04:50:08,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353452523] [2020-10-14 04:50:08,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:08,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:50:08,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771484926] [2020-10-14 04:50:08,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:50:08,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:08,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:50:08,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:50:08,609 INFO L87 Difference]: Start difference. First operand 194 states and 253 transitions. Second operand 6 states. [2020-10-14 04:50:08,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:08,791 INFO L93 Difference]: Finished difference Result 340 states and 442 transitions. [2020-10-14 04:50:08,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:50:08,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-14 04:50:08,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:08,794 INFO L225 Difference]: With dead ends: 340 [2020-10-14 04:50:08,794 INFO L226 Difference]: Without dead ends: 192 [2020-10-14 04:50:08,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:50:08,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-14 04:50:08,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2020-10-14 04:50:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 04:50:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 240 transitions. [2020-10-14 04:50:08,810 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 240 transitions. Word has length 34 [2020-10-14 04:50:08,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:08,810 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 240 transitions. [2020-10-14 04:50:08,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:50:08,810 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 240 transitions. [2020-10-14 04:50:08,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:50:08,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:08,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:08,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 04:50:08,812 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:08,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:08,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1047096840, now seen corresponding path program 1 times [2020-10-14 04:50:08,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:08,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023198020] [2020-10-14 04:50:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:08,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:09,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:09,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:09,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:50:09,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:09,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-14 04:50:09,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:09,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:09,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:50:09,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:09,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:50:09,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:09,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:09,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:09,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:09,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:09,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:09,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:09,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:09,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:09,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:09,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:09,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:09,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:09,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023198020] [2020-10-14 04:50:09,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:09,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:09,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920182687] [2020-10-14 04:50:09,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:09,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:09,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:09,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:09,469 INFO L87 Difference]: Start difference. First operand 189 states and 240 transitions. Second operand 9 states. [2020-10-14 04:50:09,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:09,964 INFO L93 Difference]: Finished difference Result 233 states and 288 transitions. [2020-10-14 04:50:09,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:50:09,964 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-14 04:50:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:09,967 INFO L225 Difference]: With dead ends: 233 [2020-10-14 04:50:09,967 INFO L226 Difference]: Without dead ends: 202 [2020-10-14 04:50:09,968 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 04:50:09,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-14 04:50:09,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 195. [2020-10-14 04:50:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 04:50:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 246 transitions. [2020-10-14 04:50:09,980 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 246 transitions. Word has length 34 [2020-10-14 04:50:09,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:09,981 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 246 transitions. [2020-10-14 04:50:09,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 246 transitions. [2020-10-14 04:50:09,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 04:50:09,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:09,982 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:09,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 04:50:09,982 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:09,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:09,982 INFO L82 PathProgramCache]: Analyzing trace with hash -728743133, now seen corresponding path program 2 times [2020-10-14 04:50:09,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:09,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680060524] [2020-10-14 04:50:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:10,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:10,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:10,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:11,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:11,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 04:50:11,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:50:11,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1397 [2020-10-14 04:50:11,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:11,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:50:11,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:11,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:11,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:11,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:11,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:11,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:11,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:11,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:11,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:11,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:11,544 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 04:50:11,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680060524] [2020-10-14 04:50:11,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:11,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:11,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419117986] [2020-10-14 04:50:11,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:11,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:11,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:11,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:11,546 INFO L87 Difference]: Start difference. First operand 195 states and 246 transitions. Second operand 11 states. [2020-10-14 04:50:12,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:12,629 INFO L93 Difference]: Finished difference Result 305 states and 371 transitions. [2020-10-14 04:50:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:50:12,630 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-14 04:50:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:12,631 INFO L225 Difference]: With dead ends: 305 [2020-10-14 04:50:12,632 INFO L226 Difference]: Without dead ends: 263 [2020-10-14 04:50:12,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:50:12,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-14 04:50:12,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 199. [2020-10-14 04:50:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-14 04:50:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 252 transitions. [2020-10-14 04:50:12,646 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 252 transitions. Word has length 35 [2020-10-14 04:50:12,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:12,646 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 252 transitions. [2020-10-14 04:50:12,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 252 transitions. [2020-10-14 04:50:12,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:50:12,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:12,648 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:12,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 04:50:12,648 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:12,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:12,648 INFO L82 PathProgramCache]: Analyzing trace with hash -717669904, now seen corresponding path program 3 times [2020-10-14 04:50:12,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:12,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468844923] [2020-10-14 04:50:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:12,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:13,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:13,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:50:13,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:13,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-14 04:50:13,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:13,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:50:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:13,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:13,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:13,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:13,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:13,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:13,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:13,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:13,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:13,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:13,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:13,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:13,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:13,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468844923] [2020-10-14 04:50:13,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:13,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:13,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040912308] [2020-10-14 04:50:13,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:13,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:13,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:13,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:13,362 INFO L87 Difference]: Start difference. First operand 199 states and 252 transitions. Second operand 12 states. [2020-10-14 04:50:14,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:14,167 INFO L93 Difference]: Finished difference Result 325 states and 399 transitions. [2020-10-14 04:50:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:50:14,167 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-14 04:50:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:14,169 INFO L225 Difference]: With dead ends: 325 [2020-10-14 04:50:14,170 INFO L226 Difference]: Without dead ends: 271 [2020-10-14 04:50:14,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:50:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-14 04:50:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 216. [2020-10-14 04:50:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-14 04:50:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 273 transitions. [2020-10-14 04:50:14,191 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 273 transitions. Word has length 36 [2020-10-14 04:50:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:14,191 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 273 transitions. [2020-10-14 04:50:14,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 273 transitions. [2020-10-14 04:50:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:50:14,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:14,193 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:14,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 04:50:14,193 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:14,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:14,193 INFO L82 PathProgramCache]: Analyzing trace with hash 404133486, now seen corresponding path program 4 times [2020-10-14 04:50:14,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:14,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091937694] [2020-10-14 04:50:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:14,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:14,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:50:14,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:14,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-14 04:50:14,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:14,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:14,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:50:14,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:14,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:50:14,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:14,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:14,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:14,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:14,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:14,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:14,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:14,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:14,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091937694] [2020-10-14 04:50:14,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:14,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:14,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450990078] [2020-10-14 04:50:14,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:14,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:14,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:14,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:14,966 INFO L87 Difference]: Start difference. First operand 216 states and 273 transitions. Second operand 13 states. [2020-10-14 04:50:16,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:16,210 INFO L93 Difference]: Finished difference Result 304 states and 378 transitions. [2020-10-14 04:50:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:50:16,213 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-14 04:50:16,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:16,215 INFO L225 Difference]: With dead ends: 304 [2020-10-14 04:50:16,215 INFO L226 Difference]: Without dead ends: 302 [2020-10-14 04:50:16,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:50:16,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-14 04:50:16,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 236. [2020-10-14 04:50:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-14 04:50:16,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 300 transitions. [2020-10-14 04:50:16,233 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 300 transitions. Word has length 36 [2020-10-14 04:50:16,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:16,233 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 300 transitions. [2020-10-14 04:50:16,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:16,233 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 300 transitions. [2020-10-14 04:50:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 04:50:16,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:16,234 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:16,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 04:50:16,235 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:16,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:16,235 INFO L82 PathProgramCache]: Analyzing trace with hash -17775533, now seen corresponding path program 3 times [2020-10-14 04:50:16,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:16,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696617791] [2020-10-14 04:50:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:16,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:16,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:16,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 04:50:16,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:16,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-14 04:50:16,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:16,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:16,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:50:16,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:16,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:50:16,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:17,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:17,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:17,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:17,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:17,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:50:17,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:17,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:17,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696617791] [2020-10-14 04:50:17,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:17,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:17,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681063399] [2020-10-14 04:50:17,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:17,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:17,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:17,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:17,267 INFO L87 Difference]: Start difference. First operand 236 states and 300 transitions. Second operand 13 states. [2020-10-14 04:50:18,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:18,192 INFO L93 Difference]: Finished difference Result 310 states and 394 transitions. [2020-10-14 04:50:18,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:50:18,192 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-14 04:50:18,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:18,195 INFO L225 Difference]: With dead ends: 310 [2020-10-14 04:50:18,195 INFO L226 Difference]: Without dead ends: 308 [2020-10-14 04:50:18,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:50:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-14 04:50:18,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 236. [2020-10-14 04:50:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-14 04:50:18,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 299 transitions. [2020-10-14 04:50:18,212 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 299 transitions. Word has length 37 [2020-10-14 04:50:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:18,212 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 299 transitions. [2020-10-14 04:50:18,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 299 transitions. [2020-10-14 04:50:18,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:50:18,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:18,213 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:18,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 04:50:18,213 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:18,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:18,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1226126595, now seen corresponding path program 1 times [2020-10-14 04:50:18,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:18,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991068346] [2020-10-14 04:50:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:18,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:18,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:50:18,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:18,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-14 04:50:18,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:18,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:50:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:50:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:19,634 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 42 [2020-10-14 04:50:19,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:19,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:19,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:19,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:19,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:19,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:19,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:19,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:19,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:19,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:19,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:19,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:19,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991068346] [2020-10-14 04:50:19,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:19,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:19,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103813511] [2020-10-14 04:50:19,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:19,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:19,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:19,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:19,739 INFO L87 Difference]: Start difference. First operand 236 states and 299 transitions. Second operand 13 states. [2020-10-14 04:50:20,976 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-14 04:50:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:21,323 INFO L93 Difference]: Finished difference Result 315 states and 385 transitions. [2020-10-14 04:50:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:50:21,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-14 04:50:21,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:21,326 INFO L225 Difference]: With dead ends: 315 [2020-10-14 04:50:21,327 INFO L226 Difference]: Without dead ends: 313 [2020-10-14 04:50:21,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:50:21,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-14 04:50:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 230. [2020-10-14 04:50:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-14 04:50:21,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 292 transitions. [2020-10-14 04:50:21,346 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 292 transitions. Word has length 38 [2020-10-14 04:50:21,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:21,346 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 292 transitions. [2020-10-14 04:50:21,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:21,347 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 292 transitions. [2020-10-14 04:50:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:50:21,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:21,348 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:21,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 04:50:21,348 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:21,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:21,348 INFO L82 PathProgramCache]: Analyzing trace with hash 829925029, now seen corresponding path program 5 times [2020-10-14 04:50:21,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:21,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021173180] [2020-10-14 04:50:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:21,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:22,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:50:22,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-10-14 04:50:22,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:22,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:50:22,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:22,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:22,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:22,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:22,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:22,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:22,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:22,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:22,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:22,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:22,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:22,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:50:22,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021173180] [2020-10-14 04:50:22,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:22,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:22,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43462329] [2020-10-14 04:50:22,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:22,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:22,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:22,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:22,317 INFO L87 Difference]: Start difference. First operand 230 states and 292 transitions. Second operand 11 states. [2020-10-14 04:50:23,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:23,400 INFO L93 Difference]: Finished difference Result 321 states and 393 transitions. [2020-10-14 04:50:23,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:50:23,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-14 04:50:23,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:23,403 INFO L225 Difference]: With dead ends: 321 [2020-10-14 04:50:23,403 INFO L226 Difference]: Without dead ends: 272 [2020-10-14 04:50:23,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:50:23,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-14 04:50:23,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 229. [2020-10-14 04:50:23,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-14 04:50:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 289 transitions. [2020-10-14 04:50:23,442 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 289 transitions. Word has length 38 [2020-10-14 04:50:23,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:23,443 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 289 transitions. [2020-10-14 04:50:23,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:23,443 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 289 transitions. [2020-10-14 04:50:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:50:23,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:23,445 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:23,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 04:50:23,445 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:23,445 INFO L82 PathProgramCache]: Analyzing trace with hash 8376, now seen corresponding path program 6 times [2020-10-14 04:50:23,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:23,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670605250] [2020-10-14 04:50:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:24,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:24,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:50:24,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-14 04:50:24,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:24,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:50:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:50:24,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:24,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:24,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:24,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:24,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:24,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:24,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:24,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:24,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:24,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:24,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670605250] [2020-10-14 04:50:24,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:24,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:24,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637425499] [2020-10-14 04:50:24,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:24,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:24,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:24,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:24,677 INFO L87 Difference]: Start difference. First operand 229 states and 289 transitions. Second operand 13 states. [2020-10-14 04:50:26,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:26,071 INFO L93 Difference]: Finished difference Result 314 states and 388 transitions. [2020-10-14 04:50:26,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:50:26,072 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-14 04:50:26,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:26,074 INFO L225 Difference]: With dead ends: 314 [2020-10-14 04:50:26,074 INFO L226 Difference]: Without dead ends: 312 [2020-10-14 04:50:26,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:50:26,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-14 04:50:26,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 238. [2020-10-14 04:50:26,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-14 04:50:26,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 302 transitions. [2020-10-14 04:50:26,094 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 302 transitions. Word has length 39 [2020-10-14 04:50:26,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:26,094 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 302 transitions. [2020-10-14 04:50:26,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:26,094 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 302 transitions. [2020-10-14 04:50:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:50:26,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:26,095 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:26,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 04:50:26,096 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1899712663, now seen corresponding path program 1 times [2020-10-14 04:50:26,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:26,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399228940] [2020-10-14 04:50:26,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:27,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:30,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:30,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:50:30,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:50:30,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4814 [2020-10-14 04:50:30,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:30,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:50:30,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:31,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:31,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:31,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:31,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:31,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:31,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:31,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:31,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399228940] [2020-10-14 04:50:31,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:31,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:31,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919086514] [2020-10-14 04:50:31,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:31,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:31,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:31,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:31,184 INFO L87 Difference]: Start difference. First operand 238 states and 302 transitions. Second operand 12 states. [2020-10-14 04:50:31,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:31,865 INFO L93 Difference]: Finished difference Result 317 states and 389 transitions. [2020-10-14 04:50:31,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:50:31,866 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-14 04:50:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:31,868 INFO L225 Difference]: With dead ends: 317 [2020-10-14 04:50:31,868 INFO L226 Difference]: Without dead ends: 315 [2020-10-14 04:50:31,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:31,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-14 04:50:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 267. [2020-10-14 04:50:31,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-14 04:50:31,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 335 transitions. [2020-10-14 04:50:31,890 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 335 transitions. Word has length 39 [2020-10-14 04:50:31,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:31,891 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 335 transitions. [2020-10-14 04:50:31,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:31,891 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 335 transitions. [2020-10-14 04:50:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 04:50:31,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:31,892 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:31,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 04:50:31,892 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:31,893 INFO L82 PathProgramCache]: Analyzing trace with hash 398790395, now seen corresponding path program 7 times [2020-10-14 04:50:31,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:31,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158805444] [2020-10-14 04:50:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:31,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:32,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:32,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:50:32,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-14 04:50:32,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:32,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:50:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:50:32,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:32,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:32,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:32,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:32,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:32,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:32,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:32,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:32,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:32,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158805444] [2020-10-14 04:50:32,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:32,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:32,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897628044] [2020-10-14 04:50:32,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:32,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:32,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:32,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:32,960 INFO L87 Difference]: Start difference. First operand 267 states and 335 transitions. Second operand 13 states. [2020-10-14 04:50:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:33,785 INFO L93 Difference]: Finished difference Result 395 states and 488 transitions. [2020-10-14 04:50:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:50:33,791 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-14 04:50:33,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:33,793 INFO L225 Difference]: With dead ends: 395 [2020-10-14 04:50:33,793 INFO L226 Difference]: Without dead ends: 341 [2020-10-14 04:50:33,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:33,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-14 04:50:33,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 281. [2020-10-14 04:50:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-14 04:50:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 353 transitions. [2020-10-14 04:50:33,820 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 353 transitions. Word has length 40 [2020-10-14 04:50:33,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:33,820 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 353 transitions. [2020-10-14 04:50:33,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 353 transitions. [2020-10-14 04:50:33,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 04:50:33,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:33,822 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:33,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 04:50:33,822 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:33,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:33,823 INFO L82 PathProgramCache]: Analyzing trace with hash -27174665, now seen corresponding path program 8 times [2020-10-14 04:50:33,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:33,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425240167] [2020-10-14 04:50:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:34,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:34,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:50:34,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-14 04:50:34,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:34,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:50:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:50:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:34,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:34,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:34,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:34,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:34,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:34,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:34,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:34,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:34,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425240167] [2020-10-14 04:50:34,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:34,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:50:34,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460095537] [2020-10-14 04:50:34,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:50:34,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:34,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:50:34,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:34,952 INFO L87 Difference]: Start difference. First operand 281 states and 353 transitions. Second operand 14 states. [2020-10-14 04:50:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:36,433 INFO L93 Difference]: Finished difference Result 393 states and 492 transitions. [2020-10-14 04:50:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:50:36,434 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2020-10-14 04:50:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:36,437 INFO L225 Difference]: With dead ends: 393 [2020-10-14 04:50:36,437 INFO L226 Difference]: Without dead ends: 391 [2020-10-14 04:50:36,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:50:36,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-14 04:50:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 315. [2020-10-14 04:50:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-14 04:50:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 400 transitions. [2020-10-14 04:50:36,464 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 400 transitions. Word has length 40 [2020-10-14 04:50:36,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:36,465 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 400 transitions. [2020-10-14 04:50:36,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:50:36,465 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 400 transitions. [2020-10-14 04:50:36,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 04:50:36,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:36,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:36,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 04:50:36,467 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:36,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:36,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1045253799, now seen corresponding path program 1 times [2020-10-14 04:50:36,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:36,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800659328] [2020-10-14 04:50:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:36,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:36,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:50:36,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:36,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-14 04:50:36,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:36,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:36,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:50:36,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:37,195 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 36 [2020-10-14 04:50:37,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:37,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:37,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:37,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:37,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:37,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:37,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:37,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:37,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800659328] [2020-10-14 04:50:37,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:37,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:37,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119941640] [2020-10-14 04:50:37,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:37,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:37,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:37,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:37,308 INFO L87 Difference]: Start difference. First operand 315 states and 400 transitions. Second operand 12 states. [2020-10-14 04:50:38,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:38,189 INFO L93 Difference]: Finished difference Result 439 states and 535 transitions. [2020-10-14 04:50:38,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:50:38,189 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-14 04:50:38,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:38,192 INFO L225 Difference]: With dead ends: 439 [2020-10-14 04:50:38,193 INFO L226 Difference]: Without dead ends: 411 [2020-10-14 04:50:38,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:50:38,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-14 04:50:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 316. [2020-10-14 04:50:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-14 04:50:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 399 transitions. [2020-10-14 04:50:38,222 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 399 transitions. Word has length 40 [2020-10-14 04:50:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:38,222 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 399 transitions. [2020-10-14 04:50:38,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:38,222 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 399 transitions. [2020-10-14 04:50:38,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 04:50:38,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:38,227 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:38,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 04:50:38,228 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:38,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1177769661, now seen corresponding path program 1 times [2020-10-14 04:50:38,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:38,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890915279] [2020-10-14 04:50:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:38,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:38,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:39,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:39,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 04:50:39,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:39,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 870 [2020-10-14 04:50:39,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:39,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:39,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:39,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:39,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 04:50:39,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:39,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:39,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:39,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:39,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:39,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:39,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:39,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:39,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:39,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:39,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:39,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:39,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:39,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890915279] [2020-10-14 04:50:39,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:39,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:50:39,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77631176] [2020-10-14 04:50:39,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:39,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:39,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:39,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:39,256 INFO L87 Difference]: Start difference. First operand 316 states and 399 transitions. Second operand 10 states. [2020-10-14 04:50:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:39,958 INFO L93 Difference]: Finished difference Result 395 states and 483 transitions. [2020-10-14 04:50:39,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:50:39,959 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-14 04:50:39,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:39,961 INFO L225 Difference]: With dead ends: 395 [2020-10-14 04:50:39,961 INFO L226 Difference]: Without dead ends: 356 [2020-10-14 04:50:39,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:39,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-14 04:50:39,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 314. [2020-10-14 04:50:39,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-14 04:50:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 396 transitions. [2020-10-14 04:50:39,986 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 396 transitions. Word has length 41 [2020-10-14 04:50:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:39,986 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 396 transitions. [2020-10-14 04:50:39,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 396 transitions. [2020-10-14 04:50:39,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 04:50:39,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:39,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:39,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 04:50:39,988 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:39,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:39,988 INFO L82 PathProgramCache]: Analyzing trace with hash 262900603, now seen corresponding path program 1 times [2020-10-14 04:50:39,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:39,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131142855] [2020-10-14 04:50:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:45,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:45,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 04:50:45,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:50:45,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:50:45,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:45,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:45,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:50:45,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 04:50:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:50:45,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:45,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:45,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:45,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:45,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:45,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:45,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:45,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:45,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:45,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:50:45,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131142855] [2020-10-14 04:50:45,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:45,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:50:45,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693431350] [2020-10-14 04:50:45,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:50:45,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:45,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:50:45,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:50:45,040 INFO L87 Difference]: Start difference. First operand 314 states and 396 transitions. Second operand 6 states. [2020-10-14 04:50:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:45,254 INFO L93 Difference]: Finished difference Result 316 states and 398 transitions. [2020-10-14 04:50:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:50:45,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-14 04:50:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:45,258 INFO L225 Difference]: With dead ends: 316 [2020-10-14 04:50:45,259 INFO L226 Difference]: Without dead ends: 314 [2020-10-14 04:50:45,259 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 04:50:45,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-14 04:50:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 306. [2020-10-14 04:50:45,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-14 04:50:45,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 388 transitions. [2020-10-14 04:50:45,283 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 388 transitions. Word has length 41 [2020-10-14 04:50:45,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:45,283 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 388 transitions. [2020-10-14 04:50:45,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:50:45,284 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 388 transitions. [2020-10-14 04:50:45,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:50:45,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:45,285 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:45,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 04:50:45,285 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:45,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:45,285 INFO L82 PathProgramCache]: Analyzing trace with hash 6448368, now seen corresponding path program 9 times [2020-10-14 04:50:45,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:45,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128776068] [2020-10-14 04:50:45,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:45,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:45,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:47,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:47,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:50:47,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:50:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2058 [2020-10-14 04:50:47,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:47,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:50:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:50:47,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:47,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:47,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:47,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:47,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:47,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:47,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:47,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:47,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:47,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128776068] [2020-10-14 04:50:47,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:47,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:47,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75724484] [2020-10-14 04:50:47,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:47,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:47,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:47,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:47,614 INFO L87 Difference]: Start difference. First operand 306 states and 388 transitions. Second operand 13 states. [2020-10-14 04:50:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:49,290 INFO L93 Difference]: Finished difference Result 435 states and 531 transitions. [2020-10-14 04:50:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 04:50:49,291 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-14 04:50:49,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:49,293 INFO L225 Difference]: With dead ends: 435 [2020-10-14 04:50:49,293 INFO L226 Difference]: Without dead ends: 397 [2020-10-14 04:50:49,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2020-10-14 04:50:49,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-14 04:50:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 309. [2020-10-14 04:50:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-14 04:50:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 393 transitions. [2020-10-14 04:50:49,326 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 393 transitions. Word has length 42 [2020-10-14 04:50:49,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:49,327 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 393 transitions. [2020-10-14 04:50:49,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 393 transitions. [2020-10-14 04:50:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:50:49,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:49,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:49,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 04:50:49,329 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:49,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:49,330 INFO L82 PathProgramCache]: Analyzing trace with hash -386074267, now seen corresponding path program 1 times [2020-10-14 04:50:49,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:49,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677718466] [2020-10-14 04:50:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:49,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:50,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:50,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:50,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:50,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:52,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:52,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:50:52,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 04:50:52,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3340 [2020-10-14 04:50:52,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:52,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:50:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:50:52,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:52,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:52,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:52,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:52,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:52,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:52,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:52,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:52,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:50:52,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677718466] [2020-10-14 04:50:52,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:52,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:50:52,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237540299] [2020-10-14 04:50:52,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:50:52,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:52,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:50:52,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:50:52,777 INFO L87 Difference]: Start difference. First operand 309 states and 393 transitions. Second operand 8 states. [2020-10-14 04:50:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:53,118 INFO L93 Difference]: Finished difference Result 351 states and 438 transitions. [2020-10-14 04:50:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:50:53,119 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-14 04:50:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:53,121 INFO L225 Difference]: With dead ends: 351 [2020-10-14 04:50:53,121 INFO L226 Difference]: Without dead ends: 313 [2020-10-14 04:50:53,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-14 04:50:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 306. [2020-10-14 04:50:53,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-14 04:50:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 389 transitions. [2020-10-14 04:50:53,146 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 389 transitions. Word has length 42 [2020-10-14 04:50:53,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:53,146 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 389 transitions. [2020-10-14 04:50:53,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:50:53,147 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 389 transitions. [2020-10-14 04:50:53,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 04:50:53,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:53,148 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:53,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 04:50:53,148 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:53,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:53,149 INFO L82 PathProgramCache]: Analyzing trace with hash 242035661, now seen corresponding path program 10 times [2020-10-14 04:50:53,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:53,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775693679] [2020-10-14 04:50:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:53,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:53,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:53,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 04:50:53,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:53,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-14 04:50:53,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:53,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:50:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:50:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:54,149 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2020-10-14 04:50:54,280 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-10-14 04:50:54,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:54,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:54,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:54,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:54,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:54,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:54,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:54,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:54,481 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 04:50:54,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775693679] [2020-10-14 04:50:54,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:54,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:50:54,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095255812] [2020-10-14 04:50:54,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:50:54,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:54,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:50:54,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:54,483 INFO L87 Difference]: Start difference. First operand 306 states and 389 transitions. Second operand 14 states. [2020-10-14 04:50:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:55,725 INFO L93 Difference]: Finished difference Result 424 states and 524 transitions. [2020-10-14 04:50:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:50:55,726 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-14 04:50:55,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:55,729 INFO L225 Difference]: With dead ends: 424 [2020-10-14 04:50:55,729 INFO L226 Difference]: Without dead ends: 386 [2020-10-14 04:50:55,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:50:55,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-14 04:50:55,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 325. [2020-10-14 04:50:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-14 04:50:55,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 413 transitions. [2020-10-14 04:50:55,751 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 413 transitions. Word has length 43 [2020-10-14 04:50:55,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:55,751 INFO L479 AbstractCegarLoop]: Abstraction has 325 states and 413 transitions. [2020-10-14 04:50:55,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:50:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 413 transitions. [2020-10-14 04:50:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 04:50:55,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:55,752 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:55,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 04:50:55,753 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:55,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:55,753 INFO L82 PathProgramCache]: Analyzing trace with hash 746296975, now seen corresponding path program 11 times [2020-10-14 04:50:55,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:55,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458830290] [2020-10-14 04:50:55,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:55,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:56,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:56,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 04:50:56,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-14 04:50:56,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:56,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:50:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:50:56,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:56,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:56,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:56,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:56,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:56,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:56,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:56,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:56,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:56,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:56,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:56,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:56,962 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 04:50:56,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458830290] [2020-10-14 04:50:56,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:56,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:50:56,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519215068] [2020-10-14 04:50:56,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:50:56,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:56,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:50:56,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:50:56,964 INFO L87 Difference]: Start difference. First operand 325 states and 413 transitions. Second operand 15 states. [2020-10-14 04:50:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:58,665 INFO L93 Difference]: Finished difference Result 427 states and 534 transitions. [2020-10-14 04:50:58,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:50:58,665 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-14 04:50:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:58,668 INFO L225 Difference]: With dead ends: 427 [2020-10-14 04:50:58,668 INFO L226 Difference]: Without dead ends: 425 [2020-10-14 04:50:58,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:50:58,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-14 04:50:58,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 348. [2020-10-14 04:50:58,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-14 04:50:58,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 444 transitions. [2020-10-14 04:50:58,697 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 444 transitions. Word has length 43 [2020-10-14 04:50:58,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:58,698 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 444 transitions. [2020-10-14 04:50:58,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:50:58,698 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 444 transitions. [2020-10-14 04:50:58,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:50:58,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:58,700 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:58,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 04:50:58,700 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:58,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:58,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1156407922, now seen corresponding path program 1 times [2020-10-14 04:50:58,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:58,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719200674] [2020-10-14 04:50:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:58,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:59,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:59,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:50:59,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-14 04:50:59,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:59,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:50:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:50:59,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:59,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:59,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:59,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:59,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:59,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:59,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:59,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:59,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:59,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:59,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:59,507 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 04:50:59,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719200674] [2020-10-14 04:50:59,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:59,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:50:59,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895581396] [2020-10-14 04:50:59,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:50:59,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:59,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:50:59,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:59,509 INFO L87 Difference]: Start difference. First operand 348 states and 444 transitions. Second operand 14 states. [2020-10-14 04:51:00,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:00,850 INFO L93 Difference]: Finished difference Result 449 states and 555 transitions. [2020-10-14 04:51:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:51:00,850 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-14 04:51:00,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:00,853 INFO L225 Difference]: With dead ends: 449 [2020-10-14 04:51:00,853 INFO L226 Difference]: Without dead ends: 447 [2020-10-14 04:51:00,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:51:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-14 04:51:00,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 356. [2020-10-14 04:51:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-14 04:51:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 453 transitions. [2020-10-14 04:51:00,885 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 453 transitions. Word has length 44 [2020-10-14 04:51:00,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:00,885 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 453 transitions. [2020-10-14 04:51:00,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:51:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 453 transitions. [2020-10-14 04:51:00,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:51:00,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:00,886 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:00,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 04:51:00,887 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:00,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:00,887 INFO L82 PathProgramCache]: Analyzing trace with hash 347061296, now seen corresponding path program 1 times [2020-10-14 04:51:00,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:00,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194720774] [2020-10-14 04:51:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:00,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:01,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:01,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:51:01,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:01,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-14 04:51:01,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:01,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:51:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:51:01,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:01,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:01,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:01,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:01,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:01,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:01,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:01,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:01,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:01,688 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 04:51:01,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194720774] [2020-10-14 04:51:01,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:01,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:51:01,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421150714] [2020-10-14 04:51:01,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:51:01,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:01,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:51:01,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:51:01,689 INFO L87 Difference]: Start difference. First operand 356 states and 453 transitions. Second operand 11 states. [2020-10-14 04:51:02,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:02,646 INFO L93 Difference]: Finished difference Result 421 states and 522 transitions. [2020-10-14 04:51:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:51:02,647 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-14 04:51:02,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:02,649 INFO L225 Difference]: With dead ends: 421 [2020-10-14 04:51:02,650 INFO L226 Difference]: Without dead ends: 394 [2020-10-14 04:51:02,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:51:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-14 04:51:02,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 348. [2020-10-14 04:51:02,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-14 04:51:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 444 transitions. [2020-10-14 04:51:02,678 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 444 transitions. Word has length 44 [2020-10-14 04:51:02,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:02,678 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 444 transitions. [2020-10-14 04:51:02,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:51:02,679 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 444 transitions. [2020-10-14 04:51:02,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:51:02,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:02,680 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 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 04:51:02,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 04:51:02,680 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:02,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:02,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1694871296, now seen corresponding path program 12 times [2020-10-14 04:51:02,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:02,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711266144] [2020-10-14 04:51:02,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:02,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:03,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:03,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:51:03,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:03,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 989 [2020-10-14 04:51:03,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:03,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:51:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:51:03,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:04,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:04,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:04,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:04,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:04,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:04,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:04,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:04,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:04,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:04,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:04,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711266144] [2020-10-14 04:51:04,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:04,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:51:04,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503855055] [2020-10-14 04:51:04,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:51:04,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:04,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:51:04,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:51:04,207 INFO L87 Difference]: Start difference. First operand 348 states and 444 transitions. Second operand 15 states. [2020-10-14 04:51:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:05,686 INFO L93 Difference]: Finished difference Result 447 states and 565 transitions. [2020-10-14 04:51:05,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:51:05,686 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 04:51:05,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:05,690 INFO L225 Difference]: With dead ends: 447 [2020-10-14 04:51:05,690 INFO L226 Difference]: Without dead ends: 445 [2020-10-14 04:51:05,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:51:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-10-14 04:51:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 348. [2020-10-14 04:51:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-14 04:51:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 444 transitions. [2020-10-14 04:51:05,722 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 444 transitions. Word has length 44 [2020-10-14 04:51:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:05,722 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 444 transitions. [2020-10-14 04:51:05,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:51:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 444 transitions. [2020-10-14 04:51:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:51:05,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:05,724 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:05,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 04:51:05,724 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:05,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:05,724 INFO L82 PathProgramCache]: Analyzing trace with hash -207730088, now seen corresponding path program 1 times [2020-10-14 04:51:05,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:05,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253567089] [2020-10-14 04:51:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:05,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:06,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:06,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:09,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:09,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:51:09,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:51:09,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4138 [2020-10-14 04:51:09,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:09,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:51:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 04:51:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:10,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:10,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:10,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:10,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:10,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:10,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:10,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:10,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 04:51:10,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253567089] [2020-10-14 04:51:10,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:10,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:51:10,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318704134] [2020-10-14 04:51:10,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:51:10,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:10,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:51:10,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:51:10,346 INFO L87 Difference]: Start difference. First operand 348 states and 444 transitions. Second operand 14 states. [2020-10-14 04:51:11,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:11,399 INFO L93 Difference]: Finished difference Result 446 states and 564 transitions. [2020-10-14 04:51:11,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:51:11,400 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-10-14 04:51:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:11,403 INFO L225 Difference]: With dead ends: 446 [2020-10-14 04:51:11,403 INFO L226 Difference]: Without dead ends: 444 [2020-10-14 04:51:11,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:51:11,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-14 04:51:11,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 362. [2020-10-14 04:51:11,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-10-14 04:51:11,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 465 transitions. [2020-10-14 04:51:11,434 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 465 transitions. Word has length 45 [2020-10-14 04:51:11,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:11,434 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 465 transitions. [2020-10-14 04:51:11,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:51:11,434 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 465 transitions. [2020-10-14 04:51:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:51:11,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:11,435 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:11,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 04:51:11,436 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:11,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1017076714, now seen corresponding path program 2 times [2020-10-14 04:51:11,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:11,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146587206] [2020-10-14 04:51:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:11,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:12,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:12,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:51:12,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:12,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-10-14 04:51:12,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:12,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:12,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:51:12,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:12,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 04:51:12,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:13,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:13,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:13,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:13,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:13,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:13,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:13,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:13,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:13,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:13,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:13,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:13,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:13,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146587206] [2020-10-14 04:51:13,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:13,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:51:13,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286155557] [2020-10-14 04:51:13,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:51:13,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:13,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:51:13,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:51:13,258 INFO L87 Difference]: Start difference. First operand 362 states and 465 transitions. Second operand 15 states. [2020-10-14 04:51:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:14,897 INFO L93 Difference]: Finished difference Result 512 states and 635 transitions. [2020-10-14 04:51:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:51:14,897 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-10-14 04:51:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:14,899 INFO L225 Difference]: With dead ends: 512 [2020-10-14 04:51:14,900 INFO L226 Difference]: Without dead ends: 510 [2020-10-14 04:51:14,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:51:14,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-10-14 04:51:14,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 359. [2020-10-14 04:51:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-14 04:51:14,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 460 transitions. [2020-10-14 04:51:14,933 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 460 transitions. Word has length 45 [2020-10-14 04:51:14,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:14,933 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 460 transitions. [2020-10-14 04:51:14,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:51:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 460 transitions. [2020-10-14 04:51:14,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:51:14,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:14,935 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:14,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 04:51:14,935 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:14,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:14,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1413278280, now seen corresponding path program 13 times [2020-10-14 04:51:14,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:14,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719160360] [2020-10-14 04:51:14,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:14,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:15,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:15,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:15,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:51:15,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:15,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-14 04:51:15,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:15,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:15,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:51:15,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:15,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:51:15,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:15,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:15,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:15,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:15,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:15,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:15,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:15,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:15,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:15,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:15,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:15,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:15,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:51:15,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719160360] [2020-10-14 04:51:15,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:15,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:51:15,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318513083] [2020-10-14 04:51:15,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:51:15,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:15,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:51:15,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:51:15,882 INFO L87 Difference]: Start difference. First operand 359 states and 460 transitions. Second operand 13 states. [2020-10-14 04:51:17,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:17,478 INFO L93 Difference]: Finished difference Result 475 states and 589 transitions. [2020-10-14 04:51:17,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 04:51:17,478 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-14 04:51:17,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:17,481 INFO L225 Difference]: With dead ends: 475 [2020-10-14 04:51:17,481 INFO L226 Difference]: Without dead ends: 416 [2020-10-14 04:51:17,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:51:17,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-14 04:51:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 356. [2020-10-14 04:51:17,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-14 04:51:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 455 transitions. [2020-10-14 04:51:17,513 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 455 transitions. Word has length 45 [2020-10-14 04:51:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:17,513 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 455 transitions. [2020-10-14 04:51:17,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:51:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 455 transitions. [2020-10-14 04:51:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:51:17,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:17,515 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:17,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 04:51:17,515 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:17,515 INFO L82 PathProgramCache]: Analyzing trace with hash -86970, now seen corresponding path program 1 times [2020-10-14 04:51:17,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:17,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511194515] [2020-10-14 04:51:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:17,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:17,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:18,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:20,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:20,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:20,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:20,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:51:20,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:51:20,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2909 [2020-10-14 04:51:20,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:20,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:51:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 04:51:20,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:20,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:20,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:20,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:20,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:20,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:51:20,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:20,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:20,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:20,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:20,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:20,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:51:20,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511194515] [2020-10-14 04:51:20,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:20,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:51:20,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62317835] [2020-10-14 04:51:20,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:51:20,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:20,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:51:20,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:51:20,923 INFO L87 Difference]: Start difference. First operand 356 states and 455 transitions. Second operand 13 states. [2020-10-14 04:51:22,591 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-14 04:51:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:22,842 INFO L93 Difference]: Finished difference Result 529 states and 641 transitions. [2020-10-14 04:51:22,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 04:51:22,842 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-14 04:51:22,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:22,845 INFO L225 Difference]: With dead ends: 529 [2020-10-14 04:51:22,845 INFO L226 Difference]: Without dead ends: 527 [2020-10-14 04:51:22,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:51:22,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-10-14 04:51:22,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 376. [2020-10-14 04:51:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-14 04:51:22,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 477 transitions. [2020-10-14 04:51:22,874 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 477 transitions. Word has length 45 [2020-10-14 04:51:22,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:22,875 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 477 transitions. [2020-10-14 04:51:22,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:51:22,875 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 477 transitions. [2020-10-14 04:51:22,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:51:22,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:22,876 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:22,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 04:51:22,877 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:22,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1008794181, now seen corresponding path program 14 times [2020-10-14 04:51:22,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:22,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118555539] [2020-10-14 04:51:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:22,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:23,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:23,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:51:23,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:23,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-10-14 04:51:23,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:23,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:51:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:51:23,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:24,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:24,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:24,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:24,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:24,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:24,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:24,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:24,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:24,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:24,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:51:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:24,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118555539] [2020-10-14 04:51:24,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:24,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:51:24,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116235496] [2020-10-14 04:51:24,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:51:24,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:24,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:51:24,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:51:24,211 INFO L87 Difference]: Start difference. First operand 376 states and 477 transitions. Second operand 15 states. [2020-10-14 04:51:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:26,787 INFO L93 Difference]: Finished difference Result 517 states and 639 transitions. [2020-10-14 04:51:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 04:51:26,787 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-10-14 04:51:26,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:26,790 INFO L225 Difference]: With dead ends: 517 [2020-10-14 04:51:26,790 INFO L226 Difference]: Without dead ends: 515 [2020-10-14 04:51:26,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:51:26,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-10-14 04:51:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 389. [2020-10-14 04:51:26,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-14 04:51:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 496 transitions. [2020-10-14 04:51:26,818 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 496 transitions. Word has length 46 [2020-10-14 04:51:26,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:26,819 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 496 transitions. [2020-10-14 04:51:26,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:51:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 496 transitions. [2020-10-14 04:51:26,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:51:26,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:26,820 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:26,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 04:51:26,821 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:26,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:26,821 INFO L82 PathProgramCache]: Analyzing trace with hash 68772208, now seen corresponding path program 1 times [2020-10-14 04:51:26,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:26,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956442060] [2020-10-14 04:51:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:26,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:27,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:27,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:27,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:28,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:28,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:31,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:31,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:51:31,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:51:31,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:51:31,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:31,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:51:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 04:51:31,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:32,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:32,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:32,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:32,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:32,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:32,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:32,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:32,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:32,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:32,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:51:32,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956442060] [2020-10-14 04:51:32,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:32,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:51:32,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286002423] [2020-10-14 04:51:32,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:51:32,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:32,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:51:32,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:51:32,299 INFO L87 Difference]: Start difference. First operand 389 states and 496 transitions. Second operand 13 states. [2020-10-14 04:51:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:33,355 INFO L93 Difference]: Finished difference Result 479 states and 595 transitions. [2020-10-14 04:51:33,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:51:33,355 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-14 04:51:33,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:33,358 INFO L225 Difference]: With dead ends: 479 [2020-10-14 04:51:33,359 INFO L226 Difference]: Without dead ends: 455 [2020-10-14 04:51:33,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:51:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-10-14 04:51:33,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 407. [2020-10-14 04:51:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-14 04:51:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 517 transitions. [2020-10-14 04:51:33,394 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 517 transitions. Word has length 46 [2020-10-14 04:51:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:33,394 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 517 transitions. [2020-10-14 04:51:33,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:51:33,394 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 517 transitions. [2020-10-14 04:51:33,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:51:33,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:33,396 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:33,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 04:51:33,396 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:33,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:33,397 INFO L82 PathProgramCache]: Analyzing trace with hash -952296146, now seen corresponding path program 1 times [2020-10-14 04:51:33,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:33,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907927593] [2020-10-14 04:51:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:33,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:33,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:37,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:37,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:51:37,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:51:37,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4522 [2020-10-14 04:51:37,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:37,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:51:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 04:51:37,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:38,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:38,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:38,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:38,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:38,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:51:38,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:38,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:38,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:38,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:38,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:38,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907927593] [2020-10-14 04:51:38,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:38,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:51:38,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480114470] [2020-10-14 04:51:38,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:51:38,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:38,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:51:38,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:51:38,400 INFO L87 Difference]: Start difference. First operand 407 states and 517 transitions. Second operand 13 states. [2020-10-14 04:51:39,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:39,811 INFO L93 Difference]: Finished difference Result 556 states and 678 transitions. [2020-10-14 04:51:39,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:51:39,811 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-14 04:51:39,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:39,814 INFO L225 Difference]: With dead ends: 556 [2020-10-14 04:51:39,814 INFO L226 Difference]: Without dead ends: 537 [2020-10-14 04:51:39,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:51:39,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-10-14 04:51:39,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 413. [2020-10-14 04:51:39,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-10-14 04:51:39,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 524 transitions. [2020-10-14 04:51:39,847 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 524 transitions. Word has length 46 [2020-10-14 04:51:39,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:39,847 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 524 transitions. [2020-10-14 04:51:39,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:51:39,847 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 524 transitions. [2020-10-14 04:51:39,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:51:39,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:39,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:39,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 04:51:39,849 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:39,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:39,849 INFO L82 PathProgramCache]: Analyzing trace with hash 190499722, now seen corresponding path program 1 times [2020-10-14 04:51:39,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:39,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721722290] [2020-10-14 04:51:39,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:39,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:40,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:40,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:51:40,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:40,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 04:51:40,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:40,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:51:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:40,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:51:40,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:40,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:40,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:40,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:40,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:40,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:40,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:40,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:40,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:40,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721722290] [2020-10-14 04:51:40,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:40,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:51:40,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060211027] [2020-10-14 04:51:40,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:51:40,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:40,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:51:40,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:51:40,746 INFO L87 Difference]: Start difference. First operand 413 states and 524 transitions. Second operand 13 states. [2020-10-14 04:51:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:41,771 INFO L93 Difference]: Finished difference Result 493 states and 609 transitions. [2020-10-14 04:51:41,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:51:41,771 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-14 04:51:41,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:41,774 INFO L225 Difference]: With dead ends: 493 [2020-10-14 04:51:41,774 INFO L226 Difference]: Without dead ends: 469 [2020-10-14 04:51:41,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:51:41,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-14 04:51:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 401. [2020-10-14 04:51:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-10-14 04:51:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 510 transitions. [2020-10-14 04:51:41,802 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 510 transitions. Word has length 46 [2020-10-14 04:51:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:41,802 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 510 transitions. [2020-10-14 04:51:41,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:51:41,802 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 510 transitions. [2020-10-14 04:51:41,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:51:41,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:41,803 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:41,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 04:51:41,803 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:41,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:41,803 INFO L82 PathProgramCache]: Analyzing trace with hash -230687429, now seen corresponding path program 2 times [2020-10-14 04:51:41,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:41,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950785817] [2020-10-14 04:51:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:42,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:42,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:46,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:46,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:51:46,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:51:46,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 04:51:46,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:46,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:46,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:51:46,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:46,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:51:46,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:47,484 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 71 [2020-10-14 04:51:47,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:47,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:47,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:47,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:47,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:47,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:47,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:47,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:47,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:47,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:47,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:47,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:47,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950785817] [2020-10-14 04:51:47,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:47,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:51:47,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941071708] [2020-10-14 04:51:47,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:51:47,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:47,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:51:47,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:51:47,705 INFO L87 Difference]: Start difference. First operand 401 states and 510 transitions. Second operand 13 states. [2020-10-14 04:51:48,343 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-14 04:51:48,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:48,771 INFO L93 Difference]: Finished difference Result 456 states and 568 transitions. [2020-10-14 04:51:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:51:48,772 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-14 04:51:48,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:48,774 INFO L225 Difference]: With dead ends: 456 [2020-10-14 04:51:48,775 INFO L226 Difference]: Without dead ends: 454 [2020-10-14 04:51:48,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:51:48,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-14 04:51:48,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 430. [2020-10-14 04:51:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-14 04:51:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 542 transitions. [2020-10-14 04:51:48,817 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 542 transitions. Word has length 46 [2020-10-14 04:51:48,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:48,817 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 542 transitions. [2020-10-14 04:51:48,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:51:48,818 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 542 transitions. [2020-10-14 04:51:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 04:51:48,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:48,819 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:48,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 04:51:48,819 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:48,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1165712286, now seen corresponding path program 15 times [2020-10-14 04:51:48,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:48,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150290126] [2020-10-14 04:51:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:49,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:49,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:51:49,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:49,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-10-14 04:51:49,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:49,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:49,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:51:49,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:49,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:51:49,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:50,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:50,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:50,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:50,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:50,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:50,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:50,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:50,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:50,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150290126] [2020-10-14 04:51:50,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:50,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:51:50,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473576859] [2020-10-14 04:51:50,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:51:50,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:50,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:51:50,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:51:50,375 INFO L87 Difference]: Start difference. First operand 430 states and 542 transitions. Second operand 15 states. [2020-10-14 04:51:51,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:51,760 INFO L93 Difference]: Finished difference Result 585 states and 726 transitions. [2020-10-14 04:51:51,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:51:51,760 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-10-14 04:51:51,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:51,762 INFO L225 Difference]: With dead ends: 585 [2020-10-14 04:51:51,762 INFO L226 Difference]: Without dead ends: 523 [2020-10-14 04:51:51,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:51:51,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-10-14 04:51:51,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 446. [2020-10-14 04:51:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-14 04:51:51,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 563 transitions. [2020-10-14 04:51:51,792 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 563 transitions. Word has length 47 [2020-10-14 04:51:51,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:51,792 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 563 transitions. [2020-10-14 04:51:51,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:51:51,792 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 563 transitions. [2020-10-14 04:51:51,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 04:51:51,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:51,794 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 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 04:51:51,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 04:51:51,794 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:51,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:51,794 INFO L82 PathProgramCache]: Analyzing trace with hash 537544934, now seen corresponding path program 16 times [2020-10-14 04:51:51,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:51,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247057327] [2020-10-14 04:51:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:51,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:52,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:52,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:51:52,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:52,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-14 04:51:52,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:52,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:51:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 04:51:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:53,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:53,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:53,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:53,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:53,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:53,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:53,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:53,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:53,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:53,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:53,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:53,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247057327] [2020-10-14 04:51:53,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:53,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:51:53,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925467851] [2020-10-14 04:51:53,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:51:53,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:53,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:51:53,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:51:53,574 INFO L87 Difference]: Start difference. First operand 446 states and 563 transitions. Second operand 16 states. [2020-10-14 04:51:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:55,976 INFO L93 Difference]: Finished difference Result 574 states and 715 transitions. [2020-10-14 04:51:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:51:55,977 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-10-14 04:51:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:55,980 INFO L225 Difference]: With dead ends: 574 [2020-10-14 04:51:55,980 INFO L226 Difference]: Without dead ends: 572 [2020-10-14 04:51:55,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:51:55,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-14 04:51:56,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 446. [2020-10-14 04:51:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-14 04:51:56,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 563 transitions. [2020-10-14 04:51:56,016 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 563 transitions. Word has length 47 [2020-10-14 04:51:56,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:56,017 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 563 transitions. [2020-10-14 04:51:56,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:51:56,017 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 563 transitions. [2020-10-14 04:51:56,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 04:51:56,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:56,018 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:56,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 04:51:56,019 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:56,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:56,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1969833056, now seen corresponding path program 1 times [2020-10-14 04:51:56,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:56,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469776795] [2020-10-14 04:51:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:56,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:56,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:58,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:58,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:59,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:00,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:00,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:52:00,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:52:00,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4761 [2020-10-14 04:52:00,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:00,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:52:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:52:00,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:00,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:00,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:00,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:00,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:00,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:00,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:00,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:00,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:00,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 04:52:00,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469776795] [2020-10-14 04:52:00,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:00,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:52:00,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393910755] [2020-10-14 04:52:00,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:52:00,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:00,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:52:00,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:52:00,937 INFO L87 Difference]: Start difference. First operand 446 states and 563 transitions. Second operand 10 states. [2020-10-14 04:52:01,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:01,558 INFO L93 Difference]: Finished difference Result 499 states and 619 transitions. [2020-10-14 04:52:01,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:52:01,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-14 04:52:01,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:01,561 INFO L225 Difference]: With dead ends: 499 [2020-10-14 04:52:01,561 INFO L226 Difference]: Without dead ends: 469 [2020-10-14 04:52:01,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:52:01,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-14 04:52:01,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 452. [2020-10-14 04:52:01,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-10-14 04:52:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 569 transitions. [2020-10-14 04:52:01,598 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 569 transitions. Word has length 47 [2020-10-14 04:52:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:01,598 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 569 transitions. [2020-10-14 04:52:01,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:52:01,598 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 569 transitions. [2020-10-14 04:52:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 04:52:01,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:01,600 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:01,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 04:52:01,600 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:01,601 INFO L82 PathProgramCache]: Analyzing trace with hash 736786338, now seen corresponding path program 1 times [2020-10-14 04:52:01,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:01,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801025561] [2020-10-14 04:52:01,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:02,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:02,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:52:02,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:02,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-14 04:52:02,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:02,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:02,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:52:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 04:52:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:03,368 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-14 04:52:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:03,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:03,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:03,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:03,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:03,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:03,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:03,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:03,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801025561] [2020-10-14 04:52:03,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:03,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:52:03,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090118876] [2020-10-14 04:52:03,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:52:03,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:03,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:52:03,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:52:03,495 INFO L87 Difference]: Start difference. First operand 452 states and 569 transitions. Second operand 15 states. [2020-10-14 04:52:04,360 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-14 04:52:05,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:05,360 INFO L93 Difference]: Finished difference Result 785 states and 971 transitions. [2020-10-14 04:52:05,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:52:05,361 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-10-14 04:52:05,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:05,364 INFO L225 Difference]: With dead ends: 785 [2020-10-14 04:52:05,364 INFO L226 Difference]: Without dead ends: 783 [2020-10-14 04:52:05,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:52:05,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-10-14 04:52:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 577. [2020-10-14 04:52:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-10-14 04:52:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 736 transitions. [2020-10-14 04:52:05,410 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 736 transitions. Word has length 47 [2020-10-14 04:52:05,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:05,410 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 736 transitions. [2020-10-14 04:52:05,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:52:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 736 transitions. [2020-10-14 04:52:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 04:52:05,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:05,412 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:05,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 04:52:05,413 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1527459996, now seen corresponding path program 1 times [2020-10-14 04:52:05,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:05,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100107238] [2020-10-14 04:52:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:05,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:06,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:06,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:52:06,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:06,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-10-14 04:52:06,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:06,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:52:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:52:06,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:06,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:06,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:06,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:06,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:06,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:06,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:06,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 04:52:06,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100107238] [2020-10-14 04:52:06,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:06,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:52:06,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862458225] [2020-10-14 04:52:06,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:52:06,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:06,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:52:06,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:52:06,551 INFO L87 Difference]: Start difference. First operand 577 states and 736 transitions. Second operand 10 states. [2020-10-14 04:52:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:07,061 INFO L93 Difference]: Finished difference Result 642 states and 806 transitions. [2020-10-14 04:52:07,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:52:07,062 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-14 04:52:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:07,065 INFO L225 Difference]: With dead ends: 642 [2020-10-14 04:52:07,065 INFO L226 Difference]: Without dead ends: 588 [2020-10-14 04:52:07,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:52:07,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-10-14 04:52:07,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 571. [2020-10-14 04:52:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-10-14 04:52:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 728 transitions. [2020-10-14 04:52:07,116 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 728 transitions. Word has length 47 [2020-10-14 04:52:07,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:07,116 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 728 transitions. [2020-10-14 04:52:07,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:52:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 728 transitions. [2020-10-14 04:52:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:07,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:07,117 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:07,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 04:52:07,117 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:07,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:07,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1243577680, now seen corresponding path program 2 times [2020-10-14 04:52:07,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:07,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775516849] [2020-10-14 04:52:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:07,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:07,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:07,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:07,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 770 [2020-10-14 04:52:07,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:07,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:07,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:52:07,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:07,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:52:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:08,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:08,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:08,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:08,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:08,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:08,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:08,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:08,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:08,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:08,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:08,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:08,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775516849] [2020-10-14 04:52:08,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:08,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:52:08,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644611636] [2020-10-14 04:52:08,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:52:08,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:08,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:52:08,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:52:08,579 INFO L87 Difference]: Start difference. First operand 571 states and 728 transitions. Second operand 16 states. [2020-10-14 04:52:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:10,579 INFO L93 Difference]: Finished difference Result 699 states and 869 transitions. [2020-10-14 04:52:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:52:10,579 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-14 04:52:10,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:10,583 INFO L225 Difference]: With dead ends: 699 [2020-10-14 04:52:10,584 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 04:52:10,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:52:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 04:52:10,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 574. [2020-10-14 04:52:10,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-10-14 04:52:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 731 transitions. [2020-10-14 04:52:10,631 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 731 transitions. Word has length 48 [2020-10-14 04:52:10,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:10,631 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 731 transitions. [2020-10-14 04:52:10,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:52:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 731 transitions. [2020-10-14 04:52:10,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:10,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:10,633 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:10,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 04:52:10,633 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:10,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:10,633 INFO L82 PathProgramCache]: Analyzing trace with hash 434231054, now seen corresponding path program 1 times [2020-10-14 04:52:10,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:10,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124283108] [2020-10-14 04:52:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:10,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:12,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:12,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:12,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:12,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1436 [2020-10-14 04:52:12,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:12,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:52:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:52:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:12,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:12,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:12,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:12,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:12,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:12,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:12,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:12,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:52:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:12,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124283108] [2020-10-14 04:52:12,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:12,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:52:12,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77000953] [2020-10-14 04:52:12,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:52:12,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:12,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:52:12,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:52:12,382 INFO L87 Difference]: Start difference. First operand 574 states and 731 transitions. Second operand 13 states. [2020-10-14 04:52:14,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:14,035 INFO L93 Difference]: Finished difference Result 638 states and 798 transitions. [2020-10-14 04:52:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:52:14,035 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-14 04:52:14,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:14,038 INFO L225 Difference]: With dead ends: 638 [2020-10-14 04:52:14,039 INFO L226 Difference]: Without dead ends: 611 [2020-10-14 04:52:14,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:52:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-10-14 04:52:14,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 569. [2020-10-14 04:52:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-14 04:52:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 726 transitions. [2020-10-14 04:52:14,076 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 726 transitions. Word has length 48 [2020-10-14 04:52:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:14,076 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 726 transitions. [2020-10-14 04:52:14,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:52:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 726 transitions. [2020-10-14 04:52:14,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:14,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:14,078 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:14,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 04:52:14,078 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:14,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:14,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1422306947, now seen corresponding path program 1 times [2020-10-14 04:52:14,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:14,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963210782] [2020-10-14 04:52:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:14,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:14,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:14,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:15,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:15,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:15,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:17,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:17,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:52:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3322 [2020-10-14 04:52:17,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:17,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:52:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 04:52:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 04:52:17,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:17,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:17,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:17,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:17,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:17,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:17,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:17,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:17,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:17,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:17,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 04:52:17,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963210782] [2020-10-14 04:52:17,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:52:17,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:52:17,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697356146] [2020-10-14 04:52:17,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:52:17,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:17,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:52:17,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:52:17,449 INFO L87 Difference]: Start difference. First operand 569 states and 726 transitions. Second operand 5 states. [2020-10-14 04:52:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:17,593 INFO L93 Difference]: Finished difference Result 592 states and 749 transitions. [2020-10-14 04:52:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:52:17,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-14 04:52:17,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:17,597 INFO L225 Difference]: With dead ends: 592 [2020-10-14 04:52:17,597 INFO L226 Difference]: Without dead ends: 568 [2020-10-14 04:52:17,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:52:17,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-10-14 04:52:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 564. [2020-10-14 04:52:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-10-14 04:52:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 717 transitions. [2020-10-14 04:52:17,634 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 717 transitions. Word has length 48 [2020-10-14 04:52:17,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:17,634 INFO L479 AbstractCegarLoop]: Abstraction has 564 states and 717 transitions. [2020-10-14 04:52:17,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:52:17,635 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 717 transitions. [2020-10-14 04:52:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:17,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:17,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:17,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 04:52:17,636 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:17,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1252976834, now seen corresponding path program 1 times [2020-10-14 04:52:17,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:17,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502008633] [2020-10-14 04:52:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:18,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:19,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:21,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:21,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:21,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 04:52:21,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4303 [2020-10-14 04:52:21,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:21,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:52:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:52:21,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:22,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:22,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:22,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:22,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:22,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:22,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:22,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:22,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:22,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 04:52:22,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502008633] [2020-10-14 04:52:22,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:22,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:52:22,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873198245] [2020-10-14 04:52:22,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:52:22,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:22,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:52:22,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:52:22,022 INFO L87 Difference]: Start difference. First operand 564 states and 717 transitions. Second operand 8 states. [2020-10-14 04:52:22,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:22,335 INFO L93 Difference]: Finished difference Result 602 states and 756 transitions. [2020-10-14 04:52:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:52:22,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-10-14 04:52:22,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:22,339 INFO L225 Difference]: With dead ends: 602 [2020-10-14 04:52:22,339 INFO L226 Difference]: Without dead ends: 577 [2020-10-14 04:52:22,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:52:22,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-10-14 04:52:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 554. [2020-10-14 04:52:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-10-14 04:52:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 705 transitions. [2020-10-14 04:52:22,379 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 705 transitions. Word has length 48 [2020-10-14 04:52:22,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:22,379 INFO L479 AbstractCegarLoop]: Abstraction has 554 states and 705 transitions. [2020-10-14 04:52:22,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:52:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 705 transitions. [2020-10-14 04:52:22,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 04:52:22,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:22,380 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:22,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 04:52:22,380 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:22,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:22,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1344357107, now seen corresponding path program 17 times [2020-10-14 04:52:22,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:22,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061930129] [2020-10-14 04:52:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:22,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:22,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:23,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:23,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 04:52:23,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:52:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1426 [2020-10-14 04:52:23,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:23,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:52:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:52:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:24,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:24,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:24,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:24,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:24,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:52:24,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:24,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:24,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061930129] [2020-10-14 04:52:24,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:24,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:52:24,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656036185] [2020-10-14 04:52:24,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:52:24,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:24,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:52:24,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:52:24,252 INFO L87 Difference]: Start difference. First operand 554 states and 705 transitions. Second operand 15 states. [2020-10-14 04:52:27,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:27,071 INFO L93 Difference]: Finished difference Result 739 states and 914 transitions. [2020-10-14 04:52:27,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 04:52:27,071 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2020-10-14 04:52:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:27,075 INFO L225 Difference]: With dead ends: 739 [2020-10-14 04:52:27,075 INFO L226 Difference]: Without dead ends: 689 [2020-10-14 04:52:27,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 04:52:27,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-10-14 04:52:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 574. [2020-10-14 04:52:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-10-14 04:52:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 733 transitions. [2020-10-14 04:52:27,113 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 733 transitions. Word has length 49 [2020-10-14 04:52:27,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:27,113 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 733 transitions. [2020-10-14 04:52:27,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:52:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 733 transitions. [2020-10-14 04:52:27,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 04:52:27,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:27,114 INFO L422 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:27,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 04:52:27,114 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:27,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:27,115 INFO L82 PathProgramCache]: Analyzing trace with hash -448861587, now seen corresponding path program 3 times [2020-10-14 04:52:27,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:27,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670106386] [2020-10-14 04:52:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:27,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:27,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:27,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:27,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:32,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:32,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 04:52:32,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:52:32,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 04:52:32,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:32,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:52:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:52:32,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:32,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:32,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:32,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:32,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:32,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:32,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:32,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:32,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:32,412 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 04:52:32,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670106386] [2020-10-14 04:52:32,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:32,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:52:32,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132582274] [2020-10-14 04:52:32,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:52:32,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:32,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:52:32,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:52:32,414 INFO L87 Difference]: Start difference. First operand 574 states and 733 transitions. Second operand 13 states. [2020-10-14 04:52:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:33,685 INFO L93 Difference]: Finished difference Result 651 states and 817 transitions. [2020-10-14 04:52:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:52:33,686 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-14 04:52:33,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:33,689 INFO L225 Difference]: With dead ends: 651 [2020-10-14 04:52:33,689 INFO L226 Difference]: Without dead ends: 589 [2020-10-14 04:52:33,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:52:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-10-14 04:52:33,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 499. [2020-10-14 04:52:33,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-10-14 04:52:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 626 transitions. [2020-10-14 04:52:33,726 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 626 transitions. Word has length 49 [2020-10-14 04:52:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:33,726 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 626 transitions. [2020-10-14 04:52:33,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:52:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 626 transitions. [2020-10-14 04:52:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 04:52:33,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:33,727 INFO L422 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:33,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 04:52:33,727 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:33,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:33,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1258208213, now seen corresponding path program 2 times [2020-10-14 04:52:33,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:33,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727948812] [2020-10-14 04:52:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:33,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:34,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:34,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:34,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:38,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:38,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:38,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 04:52:38,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:52:38,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5232 [2020-10-14 04:52:38,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:38,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:38,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:52:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:52:38,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:39,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:39,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:39,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:39,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:39,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:39,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:39,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:39,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:39,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:39,960 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 04:52:39,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727948812] [2020-10-14 04:52:39,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:39,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:52:39,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506640780] [2020-10-14 04:52:39,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:52:39,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:39,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:52:39,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:52:39,962 INFO L87 Difference]: Start difference. First operand 499 states and 626 transitions. Second operand 16 states. [2020-10-14 04:52:42,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:42,823 INFO L93 Difference]: Finished difference Result 640 states and 782 transitions. [2020-10-14 04:52:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:52:42,824 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2020-10-14 04:52:42,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:42,826 INFO L225 Difference]: With dead ends: 640 [2020-10-14 04:52:42,826 INFO L226 Difference]: Without dead ends: 638 [2020-10-14 04:52:42,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2020-10-14 04:52:42,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-14 04:52:42,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 499. [2020-10-14 04:52:42,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-10-14 04:52:42,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 626 transitions. [2020-10-14 04:52:42,863 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 626 transitions. Word has length 49 [2020-10-14 04:52:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:42,863 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 626 transitions. [2020-10-14 04:52:42,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:52:42,863 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 626 transitions. [2020-10-14 04:52:42,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:52:42,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:42,864 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 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 04:52:42,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 04:52:42,865 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:42,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:42,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1127762182, now seen corresponding path program 18 times [2020-10-14 04:52:42,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:42,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123486096] [2020-10-14 04:52:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:44,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:44,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:52:44,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1392 [2020-10-14 04:52:44,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:44,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:52:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 04:52:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:44,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:44,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:44,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:44,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:44,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:44,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:44,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:44,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:44,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:44,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123486096] [2020-10-14 04:52:44,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:44,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:52:44,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176075397] [2020-10-14 04:52:44,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:52:44,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:44,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:52:44,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:52:44,836 INFO L87 Difference]: Start difference. First operand 499 states and 626 transitions. Second operand 16 states. [2020-10-14 04:52:46,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:46,512 INFO L93 Difference]: Finished difference Result 650 states and 801 transitions. [2020-10-14 04:52:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:52:46,512 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-10-14 04:52:46,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:46,516 INFO L225 Difference]: With dead ends: 650 [2020-10-14 04:52:46,516 INFO L226 Difference]: Without dead ends: 591 [2020-10-14 04:52:46,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:52:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-14 04:52:46,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 521. [2020-10-14 04:52:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-10-14 04:52:46,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 654 transitions. [2020-10-14 04:52:46,555 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 654 transitions. Word has length 50 [2020-10-14 04:52:46,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:46,555 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 654 transitions. [2020-10-14 04:52:46,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:52:46,556 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 654 transitions. [2020-10-14 04:52:46,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:52:46,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:46,557 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:46,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 04:52:46,557 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:46,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:46,557 INFO L82 PathProgramCache]: Analyzing trace with hash -219033852, now seen corresponding path program 19 times [2020-10-14 04:52:46,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:46,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758467930] [2020-10-14 04:52:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:47,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:47,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:52:47,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:47,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1288 [2020-10-14 04:52:47,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:47,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:47,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 04:52:47,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 04:52:47,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:48,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:48,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:48,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:48,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:48,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:48,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:48,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:48,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758467930] [2020-10-14 04:52:48,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:48,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:52:48,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057278508] [2020-10-14 04:52:48,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:52:48,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:48,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:52:48,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:52:48,572 INFO L87 Difference]: Start difference. First operand 521 states and 654 transitions. Second operand 17 states. [2020-10-14 04:52:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:50,747 INFO L93 Difference]: Finished difference Result 729 states and 915 transitions. [2020-10-14 04:52:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:52:50,748 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-14 04:52:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:50,752 INFO L225 Difference]: With dead ends: 729 [2020-10-14 04:52:50,752 INFO L226 Difference]: Without dead ends: 727 [2020-10-14 04:52:50,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:52:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-10-14 04:52:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 613. [2020-10-14 04:52:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-10-14 04:52:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 782 transitions. [2020-10-14 04:52:50,798 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 782 transitions. Word has length 50 [2020-10-14 04:52:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:50,798 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 782 transitions. [2020-10-14 04:52:50,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:52:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 782 transitions. [2020-10-14 04:52:50,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:52:50,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:50,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:50,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 04:52:50,800 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:50,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:50,801 INFO L82 PathProgramCache]: Analyzing trace with hash -940855354, now seen corresponding path program 1 times [2020-10-14 04:52:50,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:50,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163700] [2020-10-14 04:52:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:50,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:50,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:50,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:50,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:51,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:51,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:51,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:53,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:53,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:55,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:55,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:52:55,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 04:52:55,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:52:55,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:55,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:52:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:52:55,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:55,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:55,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:55,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:55,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:55,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:55,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:55,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:55,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 04:52:55,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163700] [2020-10-14 04:52:55,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:52:55,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:52:55,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933529653] [2020-10-14 04:52:55,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:52:55,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:55,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:52:55,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:52:55,891 INFO L87 Difference]: Start difference. First operand 613 states and 782 transitions. Second operand 8 states. [2020-10-14 04:52:56,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:56,199 INFO L93 Difference]: Finished difference Result 702 states and 875 transitions. [2020-10-14 04:52:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:52:56,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-14 04:52:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:56,203 INFO L225 Difference]: With dead ends: 702 [2020-10-14 04:52:56,204 INFO L226 Difference]: Without dead ends: 638 [2020-10-14 04:52:56,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:52:56,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-14 04:52:56,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 607. [2020-10-14 04:52:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-10-14 04:52:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 757 transitions. [2020-10-14 04:52:56,250 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 757 transitions. Word has length 50 [2020-10-14 04:52:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:56,250 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 757 transitions. [2020-10-14 04:52:56,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:52:56,250 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 757 transitions. [2020-10-14 04:52:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:52:56,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:56,251 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:56,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 04:52:56,251 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:56,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:56,251 INFO L82 PathProgramCache]: Analyzing trace with hash -144795881, now seen corresponding path program 1 times [2020-10-14 04:52:56,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:56,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751493685] [2020-10-14 04:52:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:56,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:57,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:57,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:52:57,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-10-14 04:52:57,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:57,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:52:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:52:57,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:57,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:57,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:57,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:57,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:57,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:57,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:57,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:57,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:57,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:57,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:57,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:57,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751493685] [2020-10-14 04:52:57,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:57,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:52:57,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953783144] [2020-10-14 04:52:57,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:52:57,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:57,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:52:57,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:52:57,626 INFO L87 Difference]: Start difference. First operand 607 states and 757 transitions. Second operand 15 states. [2020-10-14 04:52:59,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:59,246 INFO L93 Difference]: Finished difference Result 779 states and 971 transitions. [2020-10-14 04:52:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:52:59,247 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-14 04:52:59,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:59,250 INFO L225 Difference]: With dead ends: 779 [2020-10-14 04:52:59,251 INFO L226 Difference]: Without dead ends: 756 [2020-10-14 04:52:59,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:52:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-10-14 04:52:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 611. [2020-10-14 04:52:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-14 04:52:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 761 transitions. [2020-10-14 04:52:59,301 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 761 transitions. Word has length 50 [2020-10-14 04:52:59,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:59,301 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 761 transitions. [2020-10-14 04:52:59,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:52:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 761 transitions. [2020-10-14 04:52:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:52:59,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:59,303 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:59,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 04:52:59,303 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:59,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:59,304 INFO L82 PathProgramCache]: Analyzing trace with hash 204716420, now seen corresponding path program 1 times [2020-10-14 04:52:59,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:59,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115666237] [2020-10-14 04:52:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:59,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:59,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:00,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:04,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:53:04,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:53:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 04:53:04,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:04,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:04,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:53:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 04:53:04,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:04,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:04,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:04,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:04,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:04,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:04,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:04,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:04,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115666237] [2020-10-14 04:53:04,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:04,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:53:04,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051896403] [2020-10-14 04:53:04,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:53:04,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:04,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:53:04,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:53:04,836 INFO L87 Difference]: Start difference. First operand 611 states and 761 transitions. Second operand 15 states. [2020-10-14 04:53:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:06,163 INFO L93 Difference]: Finished difference Result 715 states and 867 transitions. [2020-10-14 04:53:06,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:53:06,164 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-14 04:53:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:06,168 INFO L225 Difference]: With dead ends: 715 [2020-10-14 04:53:06,168 INFO L226 Difference]: Without dead ends: 713 [2020-10-14 04:53:06,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:53:06,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-10-14 04:53:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 611. [2020-10-14 04:53:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-14 04:53:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 761 transitions. [2020-10-14 04:53:06,216 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 761 transitions. Word has length 50 [2020-10-14 04:53:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:06,217 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 761 transitions. [2020-10-14 04:53:06,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:53:06,217 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 761 transitions. [2020-10-14 04:53:06,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:53:06,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:06,218 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:06,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 04:53:06,218 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:06,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:06,219 INFO L82 PathProgramCache]: Analyzing trace with hash 980581081, now seen corresponding path program 3 times [2020-10-14 04:53:06,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:06,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892423945] [2020-10-14 04:53:06,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:08,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:08,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:53:08,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:08,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2015 [2020-10-14 04:53:08,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:08,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 04:53:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:53:08,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:08,779 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-10-14 04:53:08,967 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-14 04:53:09,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:09,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:09,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:09,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:09,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:09,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:09,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:09,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:09,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892423945] [2020-10-14 04:53:09,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:09,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:53:09,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449249015] [2020-10-14 04:53:09,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:53:09,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:09,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:53:09,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:53:09,687 INFO L87 Difference]: Start difference. First operand 611 states and 761 transitions. Second operand 17 states. [2020-10-14 04:53:13,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:13,412 INFO L93 Difference]: Finished difference Result 793 states and 962 transitions. [2020-10-14 04:53:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 04:53:13,413 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-10-14 04:53:13,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:13,417 INFO L225 Difference]: With dead ends: 793 [2020-10-14 04:53:13,417 INFO L226 Difference]: Without dead ends: 791 [2020-10-14 04:53:13,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 04:53:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-10-14 04:53:13,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 616. [2020-10-14 04:53:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-10-14 04:53:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 766 transitions. [2020-10-14 04:53:13,468 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 766 transitions. Word has length 52 [2020-10-14 04:53:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:13,468 INFO L479 AbstractCegarLoop]: Abstraction has 616 states and 766 transitions. [2020-10-14 04:53:13,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:53:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 766 transitions. [2020-10-14 04:53:13,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:53:13,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:13,470 INFO L422 BasicCegarLoop]: trace histogram [6, 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, 1] [2020-10-14 04:53:13,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 04:53:13,470 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:13,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:13,471 INFO L82 PathProgramCache]: Analyzing trace with hash 584379515, now seen corresponding path program 20 times [2020-10-14 04:53:13,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:13,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208287457] [2020-10-14 04:53:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:13,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:13,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:15,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:15,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:53:15,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:53:15,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1945 [2020-10-14 04:53:15,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:15,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:15,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:53:15,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:15,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:53:15,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:15,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:15,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:15,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:15,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:15,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:15,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:15,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:53:15,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208287457] [2020-10-14 04:53:15,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:15,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:53:15,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461950865] [2020-10-14 04:53:15,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:53:15,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:15,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:53:15,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:53:15,954 INFO L87 Difference]: Start difference. First operand 616 states and 766 transitions. Second operand 15 states. [2020-10-14 04:53:18,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:18,523 INFO L93 Difference]: Finished difference Result 742 states and 905 transitions. [2020-10-14 04:53:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 04:53:18,524 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-14 04:53:18,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:18,528 INFO L225 Difference]: With dead ends: 742 [2020-10-14 04:53:18,528 INFO L226 Difference]: Without dead ends: 674 [2020-10-14 04:53:18,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 04:53:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2020-10-14 04:53:18,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 613. [2020-10-14 04:53:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-10-14 04:53:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 761 transitions. [2020-10-14 04:53:18,581 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 761 transitions. Word has length 52 [2020-10-14 04:53:18,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:18,581 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 761 transitions. [2020-10-14 04:53:18,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:53:18,581 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 761 transitions. [2020-10-14 04:53:18,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:53:18,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:18,582 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:18,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 04:53:18,583 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:18,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:18,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1136366691, now seen corresponding path program 1 times [2020-10-14 04:53:18,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:18,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760105305] [2020-10-14 04:53:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:18,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:19,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:22,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:22,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:53:22,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:53:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3490 [2020-10-14 04:53:22,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:22,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:22,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:53:22,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:22,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 04:53:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:22,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:22,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:22,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:22,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:22,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:22,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:22,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:22,499 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 04:53:22,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760105305] [2020-10-14 04:53:22,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:22,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:53:22,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30737786] [2020-10-14 04:53:22,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:53:22,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:22,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:53:22,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:53:22,501 INFO L87 Difference]: Start difference. First operand 613 states and 761 transitions. Second operand 14 states. [2020-10-14 04:53:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:23,683 INFO L93 Difference]: Finished difference Result 716 states and 868 transitions. [2020-10-14 04:53:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:53:23,684 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-14 04:53:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:23,688 INFO L225 Difference]: With dead ends: 716 [2020-10-14 04:53:23,689 INFO L226 Difference]: Without dead ends: 692 [2020-10-14 04:53:23,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:53:23,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2020-10-14 04:53:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 617. [2020-10-14 04:53:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-14 04:53:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 764 transitions. [2020-10-14 04:53:23,739 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 764 transitions. Word has length 52 [2020-10-14 04:53:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:23,740 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 764 transitions. [2020-10-14 04:53:23,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:53:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 764 transitions. [2020-10-14 04:53:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 04:53:23,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:23,741 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 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 04:53:23,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 04:53:23,741 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:23,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:23,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1685893602, now seen corresponding path program 21 times [2020-10-14 04:53:23,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:23,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847331944] [2020-10-14 04:53:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:23,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:25,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:25,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 04:53:25,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:25,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1357 [2020-10-14 04:53:25,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:25,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:53:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 04:53:25,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:25,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:25,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:25,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:25,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:25,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:25,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:25,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:25,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:25,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:25,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:25,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:25,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:25,747 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 04:53:25,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847331944] [2020-10-14 04:53:25,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:25,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:53:25,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026200208] [2020-10-14 04:53:25,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:53:25,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:25,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:53:25,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:53:25,749 INFO L87 Difference]: Start difference. First operand 617 states and 764 transitions. Second operand 17 states. [2020-10-14 04:53:29,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:29,305 INFO L93 Difference]: Finished difference Result 764 states and 934 transitions. [2020-10-14 04:53:29,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 04:53:29,305 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2020-10-14 04:53:29,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:29,310 INFO L225 Difference]: With dead ends: 764 [2020-10-14 04:53:29,311 INFO L226 Difference]: Without dead ends: 762 [2020-10-14 04:53:29,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:53:29,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-10-14 04:53:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 630. [2020-10-14 04:53:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-10-14 04:53:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 783 transitions. [2020-10-14 04:53:29,364 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 783 transitions. Word has length 53 [2020-10-14 04:53:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:29,364 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 783 transitions. [2020-10-14 04:53:29,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:53:29,364 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 783 transitions. [2020-10-14 04:53:29,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 04:53:29,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:29,365 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 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, 1, 1, 1, 1, 1] [2020-10-14 04:53:29,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 04:53:29,365 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:29,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:29,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1772042496, now seen corresponding path program 3 times [2020-10-14 04:53:29,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:29,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39091569] [2020-10-14 04:53:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:29,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:29,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:30,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking...