/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/eca-rers2012/Problem15_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:35:34,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:35:34,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:35:34,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:35:34,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:35:34,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:35:34,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:35:34,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:35:34,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:35:34,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:35:34,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:35:34,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:35:34,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:35:34,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:35:34,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:35:34,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:35:34,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:35:34,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:35:34,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:35:34,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:35:34,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:35:34,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:35:34,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:35:34,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:35:34,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:35:34,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:35:34,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:35:34,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:35:34,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:35:34,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:35:34,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:35:34,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:35:34,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:35:34,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:35:34,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:35:34,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:35:34,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:35:34,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:35:34,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:35:34,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:35:34,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:35:34,298 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 03:35:34,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:35:34,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:35:34,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:35:34,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:35:34,325 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:35:34,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:35:34,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:35:34,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:35:34,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:35:34,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:35:34,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:35:34,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:35:34,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:35:34,327 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:35:34,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:35:34,327 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:35:34,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:35:34,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:35:34,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:35:34,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:35:34,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:35:34,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:35:34,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:35:34,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:35:34,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:35:34,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:35:34,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:35:34,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:35:34,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:35:34,330 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 03:35:34,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:35:34,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:35:34,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:35:34,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:35:34,699 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:35:34,700 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49.c [2020-10-14 03:35:34,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e331da38/47bcb7c9d4b949dba11afa2790b654de/FLAG8dcb271b9 [2020-10-14 03:35:35,443 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:35:35,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label49.c [2020-10-14 03:35:35,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e331da38/47bcb7c9d4b949dba11afa2790b654de/FLAG8dcb271b9 [2020-10-14 03:35:35,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e331da38/47bcb7c9d4b949dba11afa2790b654de [2020-10-14 03:35:35,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:35:35,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:35:35,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:35:35,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:35:35,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:35:35,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:35:35" (1/1) ... [2020-10-14 03:35:35,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a1d4b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:35, skipping insertion in model container [2020-10-14 03:35:35,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:35:35" (1/1) ... [2020-10-14 03:35:35,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:35:35,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:35:36,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:35:36,717 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:35:37,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:35:37,438 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:35:37,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:37 WrapperNode [2020-10-14 03:35:37,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:35:37,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:35:37,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:35:37,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:35:37,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:37" (1/1) ... [2020-10-14 03:35:37,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:37" (1/1) ... [2020-10-14 03:35:37,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:37" (1/1) ... [2020-10-14 03:35:37,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:37" (1/1) ... [2020-10-14 03:35:37,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:37" (1/1) ... [2020-10-14 03:35:37,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:37" (1/1) ... [2020-10-14 03:35:37,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:37" (1/1) ... [2020-10-14 03:35:37,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:35:37,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:35:37,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:35:37,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:35:37,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:37" (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 03:35:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:35:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:35:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:35:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:35:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:35:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:35:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:35:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:35:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:35:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:35:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:35:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:35:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:35:44,218 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:35:44,218 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:35:44,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:35:44 BoogieIcfgContainer [2020-10-14 03:35:44,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:35:44,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:35:44,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:35:44,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:35:44,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:35:35" (1/3) ... [2020-10-14 03:35:44,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b08cf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:35:44, skipping insertion in model container [2020-10-14 03:35:44,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:37" (2/3) ... [2020-10-14 03:35:44,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b08cf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:35:44, skipping insertion in model container [2020-10-14 03:35:44,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:35:44" (3/3) ... [2020-10-14 03:35:44,252 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label49.c [2020-10-14 03:35:44,265 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:35:44,279 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:35:44,296 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:35:44,331 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:35:44,331 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:35:44,331 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:35:44,332 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:35:44,332 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:35:44,332 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:35:44,332 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:35:44,332 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:35:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:35:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 03:35:44,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:44,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:44,379 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:44,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:44,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1661413296, now seen corresponding path program 1 times [2020-10-14 03:35:44,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:44,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334512499] [2020-10-14 03:35:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:45,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:45,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 03:35:45,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-14 03:35:45,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:45,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:35:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:35:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 03:35:45,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:35:45,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:45,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:45,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:45,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:45,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:45,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 03:35:45,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:45,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:35:45,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:35:45,409 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 03:35:45,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334512499] [2020-10-14 03:35:45,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:35:45,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:35:45,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794889217] [2020-10-14 03:35:45,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:35:45,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:45,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:35:45,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:35:45,442 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:35:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:51,197 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 03:35:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:35:51,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 03:35:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:51,221 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 03:35:51,221 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 03:35:51,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:35:51,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 03:35:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 03:35:51,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 03:35:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 03:35:51,357 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 58 [2020-10-14 03:35:51,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:51,358 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 03:35:51,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:35:51,358 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 03:35:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 03:35:51,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:51,372 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:35:51,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:35:51,373 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:51,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:51,375 INFO L82 PathProgramCache]: Analyzing trace with hash 804776820, now seen corresponding path program 1 times [2020-10-14 03:35:51,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:51,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052552681] [2020-10-14 03:35:51,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:53,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:53,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 03:35:53,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:35:53,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2424 [2020-10-14 03:35:53,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:53,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:35:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 03:35:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:35:53,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:53,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:53,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:53,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:53,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:35:53,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:53,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:53,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:53,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:54,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:54,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:54,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:35:54,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:54,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:35:54,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:54,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:54,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:35:54,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:35:54,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052552681] [2020-10-14 03:35:54,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:54,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:35:54,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146106240] [2020-10-14 03:35:54,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:35:54,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:54,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:35:54,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:35:54,132 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-14 03:36:00,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:00,111 INFO L93 Difference]: Finished difference Result 2008 states and 2962 transitions. [2020-10-14 03:36:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:36:00,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-14 03:36:00,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:00,125 INFO L225 Difference]: With dead ends: 2008 [2020-10-14 03:36:00,125 INFO L226 Difference]: Without dead ends: 1323 [2020-10-14 03:36:00,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:36:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-14 03:36:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1317. [2020-10-14 03:36:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-14 03:36:00,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1710 transitions. [2020-10-14 03:36:00,201 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1710 transitions. Word has length 127 [2020-10-14 03:36:00,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:00,204 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1710 transitions. [2020-10-14 03:36:00,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:36:00,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1710 transitions. [2020-10-14 03:36:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 03:36:00,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:00,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 03:36:00,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:36:00,211 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:00,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:00,211 INFO L82 PathProgramCache]: Analyzing trace with hash -178144233, now seen corresponding path program 1 times [2020-10-14 03:36:00,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:00,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020107280] [2020-10-14 03:36:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:00,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:00,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:00,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:01,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:04,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:04,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 03:36:04,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:36:04,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4711 [2020-10-14 03:36:04,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:04,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:36:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:36:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:05,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:05,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:05,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:05,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:05,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:05,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:36:05,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:05,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:05,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:05,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:05,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:05,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:05,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:36:05,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:05,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 03:36:05,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:05,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:36:05,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:05,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:36:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:05,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:05,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:36:05,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 03:36:05,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:05,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:36:05,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:05,452 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:36:05,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020107280] [2020-10-14 03:36:05,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:05,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:05,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631889587] [2020-10-14 03:36:05,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:05,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:05,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:05,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:05,457 INFO L87 Difference]: Start difference. First operand 1317 states and 1710 transitions. Second operand 7 states. [2020-10-14 03:36:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:15,259 INFO L93 Difference]: Finished difference Result 3608 states and 4796 transitions. [2020-10-14 03:36:15,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:36:15,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-14 03:36:15,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:15,283 INFO L225 Difference]: With dead ends: 3608 [2020-10-14 03:36:15,284 INFO L226 Difference]: Without dead ends: 2297 [2020-10-14 03:36:15,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:36:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-10-14 03:36:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1964. [2020-10-14 03:36:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1964 states. [2020-10-14 03:36:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2438 transitions. [2020-10-14 03:36:15,375 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2438 transitions. Word has length 232 [2020-10-14 03:36:15,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:15,376 INFO L479 AbstractCegarLoop]: Abstraction has 1964 states and 2438 transitions. [2020-10-14 03:36:15,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:36:15,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2438 transitions. [2020-10-14 03:36:15,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-14 03:36:15,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:15,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:36:15,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:36:15,394 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:15,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:15,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1778322359, now seen corresponding path program 1 times [2020-10-14 03:36:15,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:15,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391779126] [2020-10-14 03:36:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:15,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:20,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:20,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-14 03:36:20,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:36:20,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 03:36:20,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:20,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:36:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:36:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:20,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:20,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:20,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:20,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:20,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:20,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:36:20,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:20,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:20,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:20,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:20,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:20,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:36:20,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:20,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 03:36:20,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:20,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:20,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:36:20,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:36:21,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:36:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:21,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:21,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:36:21,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 03:36:21,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:21,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:36:21,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:36:21,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391779126] [2020-10-14 03:36:21,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:21,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:21,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808245289] [2020-10-14 03:36:21,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:21,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:21,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:21,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:21,431 INFO L87 Difference]: Start difference. First operand 1964 states and 2438 transitions. Second operand 7 states. [2020-10-14 03:36:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:33,885 INFO L93 Difference]: Finished difference Result 5628 states and 7319 transitions. [2020-10-14 03:36:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:36:33,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 338 [2020-10-14 03:36:33,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:33,916 INFO L225 Difference]: With dead ends: 5628 [2020-10-14 03:36:33,916 INFO L226 Difference]: Without dead ends: 3670 [2020-10-14 03:36:33,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:36:33,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2020-10-14 03:36:34,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3590. [2020-10-14 03:36:34,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3590 states. [2020-10-14 03:36:34,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 4347 transitions. [2020-10-14 03:36:34,058 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 4347 transitions. Word has length 338 [2020-10-14 03:36:34,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:34,059 INFO L479 AbstractCegarLoop]: Abstraction has 3590 states and 4347 transitions. [2020-10-14 03:36:34,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:36:34,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 4347 transitions. [2020-10-14 03:36:34,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-14 03:36:34,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:34,067 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:36:34,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:36:34,067 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:34,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:34,068 INFO L82 PathProgramCache]: Analyzing trace with hash -581092111, now seen corresponding path program 1 times [2020-10-14 03:36:34,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:34,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637973363] [2020-10-14 03:36:34,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:34,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:35,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:39,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:39,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-14 03:36:39,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:36:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 03:36:39,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:39,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:36:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:36:39,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:36:39,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:39,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:39,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:39,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:36:39,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:39,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:39,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:39,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:39,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:39,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:36:39,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 03:36:39,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:39,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:36:39,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:39,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:36:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:39,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:39,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:39,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:36:39,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 03:36:39,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:39,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:39,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:36:39,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:36:40,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637973363] [2020-10-14 03:36:40,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:40,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:40,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118803218] [2020-10-14 03:36:40,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:40,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:40,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:40,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:40,175 INFO L87 Difference]: Start difference. First operand 3590 states and 4347 transitions. Second operand 7 states. [2020-10-14 03:36:50,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:50,243 INFO L93 Difference]: Finished difference Result 9161 states and 11449 transitions. [2020-10-14 03:36:50,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:36:50,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-14 03:36:50,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:50,273 INFO L225 Difference]: With dead ends: 9161 [2020-10-14 03:36:50,273 INFO L226 Difference]: Without dead ends: 5577 [2020-10-14 03:36:50,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:36:50,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2020-10-14 03:36:50,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5518. [2020-10-14 03:36:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5518 states. [2020-10-14 03:36:50,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5518 states to 5518 states and 6530 transitions. [2020-10-14 03:36:50,489 INFO L78 Accepts]: Start accepts. Automaton has 5518 states and 6530 transitions. Word has length 343 [2020-10-14 03:36:50,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:50,490 INFO L479 AbstractCegarLoop]: Abstraction has 5518 states and 6530 transitions. [2020-10-14 03:36:50,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:36:50,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5518 states and 6530 transitions. [2020-10-14 03:36:50,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-14 03:36:50,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:50,502 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:36:50,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:36:50,503 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:50,504 INFO L82 PathProgramCache]: Analyzing trace with hash -478575890, now seen corresponding path program 1 times [2020-10-14 03:36:50,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:50,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971972428] [2020-10-14 03:36:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:50,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:50,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:51,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:52,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:54,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:54,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-14 03:36:54,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:36:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3909 [2020-10-14 03:36:54,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:54,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:36:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 03:36:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:54,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:54,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:54,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:54,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:54,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:36:54,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:54,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:54,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:54,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:54,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:54,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:36:54,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:54,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 03:36:54,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:54,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:54,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:54,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:54,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:36:54,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:54,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:36:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:54,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:55,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:55,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:36:55,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:55,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-14 03:36:55,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:55,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:55,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:55,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:55,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 03:36:55,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:36:55,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971972428] [2020-10-14 03:36:55,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:55,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:55,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431797310] [2020-10-14 03:36:55,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:55,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:55,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:55,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:55,314 INFO L87 Difference]: Start difference. First operand 5518 states and 6530 transitions. Second operand 7 states. [2020-10-14 03:37:06,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:06,608 INFO L93 Difference]: Finished difference Result 13966 states and 17394 transitions. [2020-10-14 03:37:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:37:06,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-10-14 03:37:06,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:06,651 INFO L225 Difference]: With dead ends: 13966 [2020-10-14 03:37:06,652 INFO L226 Difference]: Without dead ends: 6856 [2020-10-14 03:37:06,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:37:06,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6856 states. [2020-10-14 03:37:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6856 to 6746. [2020-10-14 03:37:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6746 states. [2020-10-14 03:37:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6746 states to 6746 states and 7589 transitions. [2020-10-14 03:37:06,839 INFO L78 Accepts]: Start accepts. Automaton has 6746 states and 7589 transitions. Word has length 353 [2020-10-14 03:37:06,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:06,840 INFO L479 AbstractCegarLoop]: Abstraction has 6746 states and 7589 transitions. [2020-10-14 03:37:06,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:37:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand 6746 states and 7589 transitions. [2020-10-14 03:37:06,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-14 03:37:06,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:06,848 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:06,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:37:06,848 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:06,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:06,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1757911793, now seen corresponding path program 1 times [2020-10-14 03:37:06,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:06,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89091738] [2020-10-14 03:37:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:07,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:08,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:11,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:11,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-14 03:37:11,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:37:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4675 [2020-10-14 03:37:11,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:11,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:37:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:37:11,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:37:11,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:11,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:11,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:11,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:11,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:11,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:37:11,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:11,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:11,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:11,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:12,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:12,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:37:12,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:12,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 03:37:12,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:12,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:37:12,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:12,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:37:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:12,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:12,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:12,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:37:12,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 03:37:12,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:12,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:12,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:37:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:37:12,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:37:12,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89091738] [2020-10-14 03:37:12,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:12,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:37:12,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949535925] [2020-10-14 03:37:12,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:37:12,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:12,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:37:12,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:37:12,509 INFO L87 Difference]: Start difference. First operand 6746 states and 7589 transitions. Second operand 8 states. [2020-10-14 03:37:25,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:25,080 INFO L93 Difference]: Finished difference Result 17609 states and 20255 transitions. [2020-10-14 03:37:25,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:37:25,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 369 [2020-10-14 03:37:25,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:25,129 INFO L225 Difference]: With dead ends: 17609 [2020-10-14 03:37:25,129 INFO L226 Difference]: Without dead ends: 10869 [2020-10-14 03:37:25,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 03:37:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10869 states. [2020-10-14 03:37:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10869 to 10217. [2020-10-14 03:37:25,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10217 states. [2020-10-14 03:37:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10217 states to 10217 states and 11670 transitions. [2020-10-14 03:37:25,451 INFO L78 Accepts]: Start accepts. Automaton has 10217 states and 11670 transitions. Word has length 369 [2020-10-14 03:37:25,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:25,452 INFO L479 AbstractCegarLoop]: Abstraction has 10217 states and 11670 transitions. [2020-10-14 03:37:25,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:37:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 10217 states and 11670 transitions. [2020-10-14 03:37:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 03:37:25,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:25,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:25,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:37:25,482 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:25,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:25,483 INFO L82 PathProgramCache]: Analyzing trace with hash 120073690, now seen corresponding path program 1 times [2020-10-14 03:37:25,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:25,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324948608] [2020-10-14 03:37:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:25,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:26,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:27,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:27,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-14 03:37:27,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:37:27,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-10-14 03:37:27,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:27,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:37:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:37:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:27,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:27,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:27,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:27,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:37:27,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:27,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:27,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:27,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:27,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:27,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:27,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:37:27,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:27,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 03:37:27,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:27,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:37:27,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:27,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:37:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:27,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:27,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:27,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:37:27,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 03:37:27,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:27,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:37:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:37:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:27,936 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:37:27,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324948608] [2020-10-14 03:37:27,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:27,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:37:27,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086503204] [2020-10-14 03:37:27,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:37:27,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:27,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:37:27,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:37:27,938 INFO L87 Difference]: Start difference. First operand 10217 states and 11670 transitions. Second operand 7 states. [2020-10-14 03:37:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:36,313 INFO L93 Difference]: Finished difference Result 21722 states and 25187 transitions. [2020-10-14 03:37:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:37:36,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-14 03:37:36,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:36,357 INFO L225 Difference]: With dead ends: 21722 [2020-10-14 03:37:36,357 INFO L226 Difference]: Without dead ends: 11511 [2020-10-14 03:37:36,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:37:36,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11511 states. [2020-10-14 03:37:36,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11511 to 11482. [2020-10-14 03:37:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11482 states. [2020-10-14 03:37:36,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11482 states to 11482 states and 13005 transitions. [2020-10-14 03:37:36,631 INFO L78 Accepts]: Start accepts. Automaton has 11482 states and 13005 transitions. Word has length 417 [2020-10-14 03:37:36,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:36,632 INFO L479 AbstractCegarLoop]: Abstraction has 11482 states and 13005 transitions. [2020-10-14 03:37:36,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:37:36,632 INFO L276 IsEmpty]: Start isEmpty. Operand 11482 states and 13005 transitions. [2020-10-14 03:37:36,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-14 03:37:36,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:36,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:36,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:37:36,645 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:36,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:36,645 INFO L82 PathProgramCache]: Analyzing trace with hash -486566728, now seen corresponding path program 1 times [2020-10-14 03:37:36,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:36,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107001650] [2020-10-14 03:37:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:36,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:37,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:39,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:39,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-14 03:37:39,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:37:39,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2406 [2020-10-14 03:37:39,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:39,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:37:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:37:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:39,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:39,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:39,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:39,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:37:39,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:39,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:39,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:39,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:39,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:39,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:39,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:37:39,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:39,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 03:37:39,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:39,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:39,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:39,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:39,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:37:39,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:39,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:37:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:39,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:39,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:39,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:37:39,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:39,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 03:37:39,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:39,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:39,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:39,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:37:39,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:37:39,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:37:40,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107001650] [2020-10-14 03:37:40,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:40,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:37:40,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974569109] [2020-10-14 03:37:40,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:37:40,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:40,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:37:40,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:37:40,265 INFO L87 Difference]: Start difference. First operand 11482 states and 13005 transitions. Second operand 8 states. [2020-10-14 03:37:47,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:47,310 INFO L93 Difference]: Finished difference Result 23765 states and 27793 transitions. [2020-10-14 03:37:47,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:37:47,311 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 443 [2020-10-14 03:37:47,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:47,362 INFO L225 Difference]: With dead ends: 23765 [2020-10-14 03:37:47,362 INFO L226 Difference]: Without dead ends: 12289 [2020-10-14 03:37:47,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:37:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12289 states. [2020-10-14 03:37:47,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12289 to 12117. [2020-10-14 03:37:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12117 states. [2020-10-14 03:37:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12117 states to 12117 states and 13666 transitions. [2020-10-14 03:37:47,706 INFO L78 Accepts]: Start accepts. Automaton has 12117 states and 13666 transitions. Word has length 443 [2020-10-14 03:37:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:47,707 INFO L479 AbstractCegarLoop]: Abstraction has 12117 states and 13666 transitions. [2020-10-14 03:37:47,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:37:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 12117 states and 13666 transitions. [2020-10-14 03:37:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-14 03:37:47,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:47,715 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:47,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:37:47,716 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:47,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:47,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1312597360, now seen corresponding path program 1 times [2020-10-14 03:37:47,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:47,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59508521] [2020-10-14 03:37:47,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:47,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:48,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:48,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-14 03:37:48,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-14 03:37:48,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:48,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:37:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 03:37:48,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:48,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:48,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:48,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:48,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:37:48,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:48,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:48,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:48,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:48,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:48,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:49,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:49,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:37:49,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 03:37:49,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:49,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:49,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:37:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:49,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:49,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:49,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:37:49,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:49,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 03:37:49,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:49,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:37:49,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 03:37:49,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59508521] [2020-10-14 03:37:49,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:49,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:37:49,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023333638] [2020-10-14 03:37:49,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:37:49,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:49,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:37:49,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:37:49,509 INFO L87 Difference]: Start difference. First operand 12117 states and 13666 transitions. Second operand 5 states. [2020-10-14 03:37:59,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:59,512 INFO L93 Difference]: Finished difference Result 29651 states and 33962 transitions. [2020-10-14 03:37:59,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:37:59,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 455 [2020-10-14 03:37:59,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:59,567 INFO L225 Difference]: With dead ends: 29651 [2020-10-14 03:37:59,567 INFO L226 Difference]: Without dead ends: 17540 [2020-10-14 03:37:59,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:37:59,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17540 states. [2020-10-14 03:37:59,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17540 to 17214. [2020-10-14 03:37:59,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17214 states. [2020-10-14 03:38:00,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17214 states to 17214 states and 19697 transitions. [2020-10-14 03:38:00,020 INFO L78 Accepts]: Start accepts. Automaton has 17214 states and 19697 transitions. Word has length 455 [2020-10-14 03:38:00,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:00,021 INFO L479 AbstractCegarLoop]: Abstraction has 17214 states and 19697 transitions. [2020-10-14 03:38:00,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:38:00,021 INFO L276 IsEmpty]: Start isEmpty. Operand 17214 states and 19697 transitions. [2020-10-14 03:38:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-14 03:38:00,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:00,031 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:38:00,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:38:00,032 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:00,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1015133823, now seen corresponding path program 1 times [2020-10-14 03:38:00,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:00,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937322554] [2020-10-14 03:38:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:00,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:05,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:05,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 507 [2020-10-14 03:38:05,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:38:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 03:38:05,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:05,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:05,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 03:38:05,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 03:38:05,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:05,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:05,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:05,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:05,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:05,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:05,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:38:05,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:05,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:05,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:05,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:05,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:05,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 03:38:05,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 03:38:05,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:05,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-14 03:38:05,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:05,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-14 03:38:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:05,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:06,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:06,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:38:06,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:06,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-14 03:38:06,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:06,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:06,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:06,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:38:06,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 03:38:06,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:06,807 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:38:06,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937322554] [2020-10-14 03:38:06,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:06,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:38:06,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235883265] [2020-10-14 03:38:06,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:38:06,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:06,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:38:06,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:38:06,810 INFO L87 Difference]: Start difference. First operand 17214 states and 19697 transitions. Second operand 7 states. [2020-10-14 03:38:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:14,097 INFO L93 Difference]: Finished difference Result 35587 states and 42112 transitions. [2020-10-14 03:38:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:38:14,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 495 [2020-10-14 03:38:14,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:14,188 INFO L225 Difference]: With dead ends: 35587 [2020-10-14 03:38:14,189 INFO L226 Difference]: Without dead ends: 18060 [2020-10-14 03:38:14,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:38:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18060 states. [2020-10-14 03:38:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18060 to 17828. [2020-10-14 03:38:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17828 states. [2020-10-14 03:38:14,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17828 states to 17828 states and 20270 transitions. [2020-10-14 03:38:14,707 INFO L78 Accepts]: Start accepts. Automaton has 17828 states and 20270 transitions. Word has length 495 [2020-10-14 03:38:14,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:14,708 INFO L479 AbstractCegarLoop]: Abstraction has 17828 states and 20270 transitions. [2020-10-14 03:38:14,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:38:14,708 INFO L276 IsEmpty]: Start isEmpty. Operand 17828 states and 20270 transitions. [2020-10-14 03:38:14,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-14 03:38:14,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:14,719 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:38:14,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:38:14,720 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:14,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:14,721 INFO L82 PathProgramCache]: Analyzing trace with hash 373204147, now seen corresponding path program 1 times [2020-10-14 03:38:14,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:14,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540749356] [2020-10-14 03:38:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:16,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:18,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:18,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 536 [2020-10-14 03:38:18,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:38:18,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3547 [2020-10-14 03:38:18,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:18,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 478 [2020-10-14 03:38:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 03:38:18,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:18,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:18,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:18,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:18,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:18,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:38:18,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:18,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:18,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:18,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:18,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:18,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:18,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:18,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:38:18,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:18,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 03:38:18,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:18,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:18,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:18,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:38:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:18,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:18,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:18,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:38:18,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:18,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 03:38:18,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:18,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:18,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:18,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:18,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:18,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:38:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:18,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:18,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 03:38:18,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:18,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 03:38:18,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:18,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 03:38:18,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 156 proven. 3 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-14 03:38:19,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540749356] [2020-10-14 03:38:19,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:19,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:38:19,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536352699] [2020-10-14 03:38:19,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:38:19,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:19,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:38:19,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:38:19,037 INFO L87 Difference]: Start difference. First operand 17828 states and 20270 transitions. Second operand 5 states. [2020-10-14 03:38:28,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:28,601 INFO L93 Difference]: Finished difference Result 41597 states and 47958 transitions. [2020-10-14 03:38:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:38:28,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 522 [2020-10-14 03:38:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:28,671 INFO L225 Difference]: With dead ends: 41597 [2020-10-14 03:38:28,672 INFO L226 Difference]: Without dead ends: 23775 [2020-10-14 03:38:28,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:38:28,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23775 states. [2020-10-14 03:38:29,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23775 to 22836. [2020-10-14 03:38:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22836 states. [2020-10-14 03:38:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22836 states to 22836 states and 26193 transitions. [2020-10-14 03:38:29,146 INFO L78 Accepts]: Start accepts. Automaton has 22836 states and 26193 transitions. Word has length 522 [2020-10-14 03:38:29,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:29,147 INFO L479 AbstractCegarLoop]: Abstraction has 22836 states and 26193 transitions. [2020-10-14 03:38:29,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:38:29,148 INFO L276 IsEmpty]: Start isEmpty. Operand 22836 states and 26193 transitions. [2020-10-14 03:38:29,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-14 03:38:29,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:29,162 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:38:29,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:38:29,162 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:29,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:29,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1527753667, now seen corresponding path program 1 times [2020-10-14 03:38:29,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:29,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803781694] [2020-10-14 03:38:29,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:29,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:29,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:30,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:30,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-14 03:38:30,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:38:30,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-10-14 03:38:30,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:30,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:38:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 03:38:30,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:31,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:31,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:31,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:31,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:31,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:38:31,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:31,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:31,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:31,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:31,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:31,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:31,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:38:31,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:31,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 03:38:31,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:31,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:31,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:31,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:38:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:31,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:31,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:31,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:38:31,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 03:38:31,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:31,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:31,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:31,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:38:31,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:31,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:38:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:31,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:31,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:31,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:38:31,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:31,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 03:38:31,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:31,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:38:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:38:31,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:38:31,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803781694] [2020-10-14 03:38:31,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:31,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:38:31,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635662136] [2020-10-14 03:38:31,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:38:31,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:31,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:38:31,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:38:31,649 INFO L87 Difference]: Start difference. First operand 22836 states and 26193 transitions. Second operand 7 states. [2020-10-14 03:38:42,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:42,498 INFO L93 Difference]: Finished difference Result 53698 states and 62602 transitions. [2020-10-14 03:38:42,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:38:42,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 531 [2020-10-14 03:38:42,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:42,579 INFO L225 Difference]: With dead ends: 53698 [2020-10-14 03:38:42,579 INFO L226 Difference]: Without dead ends: 30868 [2020-10-14 03:38:42,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:38:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30868 states. [2020-10-14 03:38:43,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30868 to 28984. [2020-10-14 03:38:43,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28984 states. [2020-10-14 03:38:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28984 states to 28984 states and 33516 transitions. [2020-10-14 03:38:43,109 INFO L78 Accepts]: Start accepts. Automaton has 28984 states and 33516 transitions. Word has length 531 [2020-10-14 03:38:43,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:43,110 INFO L479 AbstractCegarLoop]: Abstraction has 28984 states and 33516 transitions. [2020-10-14 03:38:43,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:38:43,110 INFO L276 IsEmpty]: Start isEmpty. Operand 28984 states and 33516 transitions. [2020-10-14 03:38:43,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-10-14 03:38:43,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:43,124 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:38:43,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:38:43,124 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:43,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:43,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1056424586, now seen corresponding path program 1 times [2020-10-14 03:38:43,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:43,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871390511] [2020-10-14 03:38:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:43,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:46,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:47,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:48,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:48,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 592 [2020-10-14 03:38:48,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:38:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 03:38:48,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:48,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 387 [2020-10-14 03:38:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 03:38:48,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:48,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:48,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:48,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:48,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:38:48,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:48,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:48,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:48,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:48,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:48,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:48,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:38:48,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:48,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 03:38:48,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:48,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:48,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:48,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:38:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:48,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:48,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:38:48,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 03:38:48,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:48,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 03:38:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:48,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:38:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:48,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:48,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:38:48,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:48,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 03:38:48,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:48,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:38:48,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 03:38:48,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 03:38:49,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871390511] [2020-10-14 03:38:49,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:49,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:38:49,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19057392] [2020-10-14 03:38:49,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:38:49,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:49,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:38:49,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:38:49,024 INFO L87 Difference]: Start difference. First operand 28984 states and 33516 transitions. Second operand 7 states. [2020-10-14 03:39:00,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:00,156 INFO L93 Difference]: Finished difference Result 64455 states and 75066 transitions. [2020-10-14 03:39:00,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:39:00,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 578 [2020-10-14 03:39:00,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:00,248 INFO L225 Difference]: With dead ends: 64455 [2020-10-14 03:39:00,248 INFO L226 Difference]: Without dead ends: 35477 [2020-10-14 03:39:00,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:39:00,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35477 states. [2020-10-14 03:39:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35477 to 34838. [2020-10-14 03:39:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34838 states. [2020-10-14 03:39:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34838 states to 34838 states and 40207 transitions. [2020-10-14 03:39:00,796 INFO L78 Accepts]: Start accepts. Automaton has 34838 states and 40207 transitions. Word has length 578 [2020-10-14 03:39:00,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:00,797 INFO L479 AbstractCegarLoop]: Abstraction has 34838 states and 40207 transitions. [2020-10-14 03:39:00,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:00,797 INFO L276 IsEmpty]: Start isEmpty. Operand 34838 states and 40207 transitions. [2020-10-14 03:39:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-10-14 03:39:00,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:00,817 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:00,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:39:00,818 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:00,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:00,818 INFO L82 PathProgramCache]: Analyzing trace with hash -317296341, now seen corresponding path program 1 times [2020-10-14 03:39:00,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:00,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702161147] [2020-10-14 03:39:00,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:01,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:03,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:05,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:05,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 614 [2020-10-14 03:39:05,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:39:05,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 03:39:05,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:05,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:05,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:05,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 354 [2020-10-14 03:39:05,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 03:39:05,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:06,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:06,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:06,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:06,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:06,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:06,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:39:06,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:06,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:06,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:06,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:06,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:06,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:39:06,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:06,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 03:39:06,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:06,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:06,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:06,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:39:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:06,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:06,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:06,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:39:06,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 03:39:06,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:06,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:39:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:06,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-14 03:39:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:06,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:06,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:06,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:39:06,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 03:39:06,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:06,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 03:39:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 443 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 03:39:07,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702161147] [2020-10-14 03:39:07,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:07,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:39:07,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425668880] [2020-10-14 03:39:07,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:39:07,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:07,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:39:07,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:39:07,144 INFO L87 Difference]: Start difference. First operand 34838 states and 40207 transitions. Second operand 8 states.