/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/Problem18_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:19:10,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:19:10,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:19:10,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:19:10,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:19:10,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:19:10,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:19:10,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:19:10,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:19:10,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:19:10,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:19:10,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:19:10,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:19:10,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:19:10,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:19:10,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:19:10,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:19:10,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:19:10,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:19:10,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:19:10,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:19:10,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:19:10,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:19:10,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:19:10,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:19:10,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:19:10,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:19:10,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:19:10,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:19:10,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:19:10,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:19:10,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:19:10,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:19:10,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:19:10,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:19:10,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:19:10,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:19:10,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:19:10,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:19:10,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:19:10,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:19:10,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:19:11,003 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:19:11,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:19:11,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:19:11,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:19:11,005 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:19:11,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:19:11,005 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:19:11,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:19:11,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:19:11,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:19:11,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:19:11,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:19:11,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:19:11,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:19:11,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:19:11,007 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:19:11,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:19:11,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:19:11,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:19:11,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:19:11,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:19:11,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:19:11,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:19:11,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:19:11,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:19:11,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:19:11,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:19:11,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:19:11,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:19:11,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:19:11,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:19:11,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:19:11,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:19:11,331 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:19:11,331 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:19:11,332 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label35.c [2020-10-14 04:19:11,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9635a84e/c0859343d9734f6fb37c56f1e3bcd78b/FLAG03bd4d760 [2020-10-14 04:19:12,111 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:19:12,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label35.c [2020-10-14 04:19:12,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9635a84e/c0859343d9734f6fb37c56f1e3bcd78b/FLAG03bd4d760 [2020-10-14 04:19:12,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9635a84e/c0859343d9734f6fb37c56f1e3bcd78b [2020-10-14 04:19:12,272 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:19:12,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:19:12,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:19:12,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:19:12,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:19:12,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:19:12" (1/1) ... [2020-10-14 04:19:12,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c10802c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:12, skipping insertion in model container [2020-10-14 04:19:12,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:19:12" (1/1) ... [2020-10-14 04:19:12,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:19:12,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:19:13,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:19:13,787 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:19:14,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:19:14,291 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:19:14,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:14 WrapperNode [2020-10-14 04:19:14,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:19:14,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:19:14,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:19:14,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:19:14,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:14" (1/1) ... [2020-10-14 04:19:14,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:14" (1/1) ... [2020-10-14 04:19:14,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:14" (1/1) ... [2020-10-14 04:19:14,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:14" (1/1) ... [2020-10-14 04:19:14,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:14" (1/1) ... [2020-10-14 04:19:14,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:14" (1/1) ... [2020-10-14 04:19:14,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:14" (1/1) ... [2020-10-14 04:19:14,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:19:14,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:19:14,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:19:14,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:19:14,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:19:14,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:19:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:19:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:19:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:19:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:19:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:19:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:19:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:19:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:19:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:19:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:19:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:19:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:19:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:19:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:19:20,823 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:19:20,823 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:19:20,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:19:20 BoogieIcfgContainer [2020-10-14 04:19:20,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:19:20,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:19:20,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:19:20,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:19:20,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:19:12" (1/3) ... [2020-10-14 04:19:20,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11eb12c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:19:20, skipping insertion in model container [2020-10-14 04:19:20,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:14" (2/3) ... [2020-10-14 04:19:20,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11eb12c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:19:20, skipping insertion in model container [2020-10-14 04:19:20,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:19:20" (3/3) ... [2020-10-14 04:19:20,848 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label35.c [2020-10-14 04:19:20,863 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:19:20,874 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:19:20,890 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:19:20,923 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:19:20,924 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:19:20,924 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:19:20,924 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:19:20,924 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:19:20,924 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:19:20,924 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:19:20,924 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:19:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:19:20,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:19:20,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:20,972 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] [2020-10-14 04:19:20,972 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1586237553, now seen corresponding path program 1 times [2020-10-14 04:19:20,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:20,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601084608] [2020-10-14 04:19:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:21,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:21,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:21,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:19:21,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:21,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-14 04:19:21,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:21,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:19:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:19:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:19:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:19:21,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:21,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:21,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:21,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:21,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:19:21,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:21,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:21,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:19:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:21,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601084608] [2020-10-14 04:19:21,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:19:21,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:19:21,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043608168] [2020-10-14 04:19:21,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:19:21,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:21,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:19:21,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:19:21,740 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:19:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:30,300 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:19:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:19:30,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-14 04:19:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:30,354 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:19:30,354 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:19:30,371 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 04:19:30,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:19:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:19:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:19:30,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-14 04:19:30,566 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 20 [2020-10-14 04:19:30,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:30,567 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-14 04:19:30,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:19:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-14 04:19:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 04:19:30,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:30,574 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:19:30,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:19:30,575 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:30,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:30,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1748288524, now seen corresponding path program 1 times [2020-10-14 04:19:30,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:30,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116323334] [2020-10-14 04:19:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:30,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:31,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:31,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 04:19:31,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:19:31,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-10-14 04:19:31,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:31,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:31,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:31,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:19:31,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:19:31,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:19:31,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:31,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:31,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:31,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:31,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:19:31,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:31,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:31,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:31,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:31,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:31,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:31,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:31,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:31,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:19:31,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:31,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:19:31,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:31,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:19:31,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:31,512 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:31,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116323334] [2020-10-14 04:19:31,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:31,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:19:31,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095383491] [2020-10-14 04:19:31,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:19:31,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:31,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:19:31,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:31,517 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-14 04:19:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:44,941 INFO L93 Difference]: Finished difference Result 4276 states and 6734 transitions. [2020-10-14 04:19:44,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:19:44,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-14 04:19:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:44,958 INFO L225 Difference]: With dead ends: 4276 [2020-10-14 04:19:44,958 INFO L226 Difference]: Without dead ends: 2857 [2020-10-14 04:19:44,963 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 04:19:44,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-14 04:19:45,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-14 04:19:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-14 04:19:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4026 transitions. [2020-10-14 04:19:45,037 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4026 transitions. Word has length 90 [2020-10-14 04:19:45,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:45,038 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4026 transitions. [2020-10-14 04:19:45,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:19:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4026 transitions. [2020-10-14 04:19:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 04:19:45,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:45,041 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:19:45,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:19:45,042 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:45,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:45,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1188959164, now seen corresponding path program 1 times [2020-10-14 04:19:45,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:45,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239543676] [2020-10-14 04:19:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:45,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:45,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:45,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:45,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 04:19:45,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:19:45,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-14 04:19:45,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:45,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:45,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:19:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:19:45,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:45,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:45,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:45,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:45,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:19:45,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:45,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:45,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:45,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:45,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:19:45,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:45,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 04:19:45,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:45,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:19:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:45,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239543676] [2020-10-14 04:19:45,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:45,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:19:45,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189991865] [2020-10-14 04:19:45,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:19:45,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:45,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:19:45,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:45,991 INFO L87 Difference]: Start difference. First operand 2853 states and 4026 transitions. Second operand 5 states. [2020-10-14 04:19:55,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:55,174 INFO L93 Difference]: Finished difference Result 8547 states and 12183 transitions. [2020-10-14 04:19:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:19:55,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-14 04:19:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:55,211 INFO L225 Difference]: With dead ends: 8547 [2020-10-14 04:19:55,211 INFO L226 Difference]: Without dead ends: 5700 [2020-10-14 04:19:55,219 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 04:19:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-10-14 04:19:55,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5696. [2020-10-14 04:19:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-14 04:19:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7348 transitions. [2020-10-14 04:19:55,383 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7348 transitions. Word has length 94 [2020-10-14 04:19:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:55,384 INFO L479 AbstractCegarLoop]: Abstraction has 5696 states and 7348 transitions. [2020-10-14 04:19:55,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:19:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7348 transitions. [2020-10-14 04:19:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 04:19:55,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:55,388 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:19:55,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:19:55,388 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:55,389 INFO L82 PathProgramCache]: Analyzing trace with hash 551662856, now seen corresponding path program 1 times [2020-10-14 04:19:55,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:55,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590107198] [2020-10-14 04:19:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:55,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:55,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:56,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:56,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 04:19:56,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:19:56,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-10-14 04:19:56,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:56,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:19:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:19:56,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:56,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:56,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:56,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:56,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:56,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:19:56,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:56,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:56,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:56,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:56,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:56,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:56,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:19:56,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:56,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 04:19:56,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:56,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:19:56,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:56,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590107198] [2020-10-14 04:19:56,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:56,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:19:56,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614666507] [2020-10-14 04:19:56,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:19:56,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:56,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:19:56,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:56,409 INFO L87 Difference]: Start difference. First operand 5696 states and 7348 transitions. Second operand 5 states. [2020-10-14 04:20:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:07,793 INFO L93 Difference]: Finished difference Result 14227 states and 18961 transitions. [2020-10-14 04:20:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:07,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 04:20:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:07,835 INFO L225 Difference]: With dead ends: 14227 [2020-10-14 04:20:07,836 INFO L226 Difference]: Without dead ends: 8537 [2020-10-14 04:20:07,850 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 04:20:07,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8537 states. [2020-10-14 04:20:08,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8537 to 8533. [2020-10-14 04:20:08,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8533 states. [2020-10-14 04:20:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 10603 transitions. [2020-10-14 04:20:08,058 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 10603 transitions. Word has length 108 [2020-10-14 04:20:08,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:08,059 INFO L479 AbstractCegarLoop]: Abstraction has 8533 states and 10603 transitions. [2020-10-14 04:20:08,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:08,059 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 10603 transitions. [2020-10-14 04:20:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 04:20:08,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:08,062 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:20:08,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:20:08,062 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:08,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:08,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1697369380, now seen corresponding path program 1 times [2020-10-14 04:20:08,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:08,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897763316] [2020-10-14 04:20:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:08,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:08,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:08,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 04:20:08,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:20:08,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-14 04:20:08,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:08,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:20:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:20:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:08,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:08,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:08,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:08,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:08,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:08,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:20:08,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:08,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:08,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:08,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:08,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:08,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:20:08,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 04:20:08,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:08,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:20:08,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:08,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897763316] [2020-10-14 04:20:08,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:08,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:08,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670306196] [2020-10-14 04:20:08,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:08,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:08,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:08,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:08,834 INFO L87 Difference]: Start difference. First operand 8533 states and 10603 transitions. Second operand 5 states. [2020-10-14 04:20:20,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:20,014 INFO L93 Difference]: Finished difference Result 18481 states and 23670 transitions. [2020-10-14 04:20:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:20,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-14 04:20:20,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:20,081 INFO L225 Difference]: With dead ends: 18481 [2020-10-14 04:20:20,081 INFO L226 Difference]: Without dead ends: 9954 [2020-10-14 04:20:20,100 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 04:20:20,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9954 states. [2020-10-14 04:20:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9954 to 9950. [2020-10-14 04:20:20,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9950 states. [2020-10-14 04:20:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9950 states to 9950 states and 12266 transitions. [2020-10-14 04:20:20,325 INFO L78 Accepts]: Start accepts. Automaton has 9950 states and 12266 transitions. Word has length 110 [2020-10-14 04:20:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:20,325 INFO L479 AbstractCegarLoop]: Abstraction has 9950 states and 12266 transitions. [2020-10-14 04:20:20,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 9950 states and 12266 transitions. [2020-10-14 04:20:20,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 04:20:20,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:20,328 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:20:20,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:20:20,329 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:20,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2068391577, now seen corresponding path program 1 times [2020-10-14 04:20:20,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:20,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175052546] [2020-10-14 04:20:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:20,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:20,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:21,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:21,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 04:20:21,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:20:21,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-14 04:20:21,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:21,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 04:20:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:20:21,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:21,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:21,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:21,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:21,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:21,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:21,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:21,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:21,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:21,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:21,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:21,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:21,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:21,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:20:21,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:20:21,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:21,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 04:20:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:21,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175052546] [2020-10-14 04:20:21,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:21,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:21,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960127145] [2020-10-14 04:20:21,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:21,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:21,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:21,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:21,337 INFO L87 Difference]: Start difference. First operand 9950 states and 12266 transitions. Second operand 5 states. [2020-10-14 04:20:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:30,283 INFO L93 Difference]: Finished difference Result 22738 states and 28920 transitions. [2020-10-14 04:20:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:30,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-14 04:20:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:30,330 INFO L225 Difference]: With dead ends: 22738 [2020-10-14 04:20:30,331 INFO L226 Difference]: Without dead ends: 12794 [2020-10-14 04:20:30,353 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 04:20:30,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12794 states. [2020-10-14 04:20:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12794 to 12790. [2020-10-14 04:20:30,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12790 states. [2020-10-14 04:20:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12790 states to 12790 states and 15582 transitions. [2020-10-14 04:20:30,606 INFO L78 Accepts]: Start accepts. Automaton has 12790 states and 15582 transitions. Word has length 115 [2020-10-14 04:20:30,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:30,607 INFO L479 AbstractCegarLoop]: Abstraction has 12790 states and 15582 transitions. [2020-10-14 04:20:30,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 12790 states and 15582 transitions. [2020-10-14 04:20:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 04:20:30,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:30,613 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:20:30,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:20:30,614 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:30,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:30,614 INFO L82 PathProgramCache]: Analyzing trace with hash 699377772, now seen corresponding path program 1 times [2020-10-14 04:20:30,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:30,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28253585] [2020-10-14 04:20:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:30,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:30,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:31,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:31,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 04:20:31,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:20:31,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-10-14 04:20:31,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:31,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:31,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:31,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 04:20:31,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:20:31,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:31,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:31,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:31,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:31,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:31,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:31,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:31,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:31,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:31,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:31,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:31,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:31,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 04:20:31,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:20:31,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:31,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 04:20:31,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:31,754 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:31,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28253585] [2020-10-14 04:20:31,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:31,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:31,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973344039] [2020-10-14 04:20:31,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:31,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:31,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:31,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:31,757 INFO L87 Difference]: Start difference. First operand 12790 states and 15582 transitions. Second operand 5 states. [2020-10-14 04:20:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:41,550 INFO L93 Difference]: Finished difference Result 31966 states and 39904 transitions. [2020-10-14 04:20:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:41,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 04:20:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:41,636 INFO L225 Difference]: With dead ends: 31966 [2020-10-14 04:20:41,637 INFO L226 Difference]: Without dead ends: 19182 [2020-10-14 04:20:41,679 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 04:20:41,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19182 states. [2020-10-14 04:20:42,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19182 to 19174. [2020-10-14 04:20:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19174 states. [2020-10-14 04:20:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19174 states to 19174 states and 23100 transitions. [2020-10-14 04:20:42,169 INFO L78 Accepts]: Start accepts. Automaton has 19174 states and 23100 transitions. Word has length 170 [2020-10-14 04:20:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:42,170 INFO L479 AbstractCegarLoop]: Abstraction has 19174 states and 23100 transitions. [2020-10-14 04:20:42,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 19174 states and 23100 transitions. [2020-10-14 04:20:42,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 04:20:42,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:42,176 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:42,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:20:42,176 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:42,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:42,177 INFO L82 PathProgramCache]: Analyzing trace with hash -737526218, now seen corresponding path program 1 times [2020-10-14 04:20:42,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:42,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52561074] [2020-10-14 04:20:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:42,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:42,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:42,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:42,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 04:20:43,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:20:43,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-14 04:20:43,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:43,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:20:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:20:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:43,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:43,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:43,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:43,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:43,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:20:43,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:43,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:43,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:43,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:43,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:43,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:43,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:43,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:20:43,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:20:43,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:43,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:20:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:20:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:43,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:43,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:20:43,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:43,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 04:20:43,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:43,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:20:43,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:43,265 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 04:20:43,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52561074] [2020-10-14 04:20:43,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:43,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:43,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148615300] [2020-10-14 04:20:43,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:43,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:43,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:43,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:43,268 INFO L87 Difference]: Start difference. First operand 19174 states and 23100 transitions. Second operand 5 states. [2020-10-14 04:20:55,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:55,815 INFO L93 Difference]: Finished difference Result 47550 states and 58435 transitions. [2020-10-14 04:20:55,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:55,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-14 04:20:55,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:56,018 INFO L225 Difference]: With dead ends: 47550 [2020-10-14 04:20:56,019 INFO L226 Difference]: Without dead ends: 28382 [2020-10-14 04:20:56,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:20:56,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28382 states. [2020-10-14 04:20:56,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28382 to 25566. [2020-10-14 04:20:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25566 states. [2020-10-14 04:20:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25566 states to 25566 states and 31360 transitions. [2020-10-14 04:20:56,545 INFO L78 Accepts]: Start accepts. Automaton has 25566 states and 31360 transitions. Word has length 181 [2020-10-14 04:20:56,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:56,546 INFO L479 AbstractCegarLoop]: Abstraction has 25566 states and 31360 transitions. [2020-10-14 04:20:56,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:56,546 INFO L276 IsEmpty]: Start isEmpty. Operand 25566 states and 31360 transitions. [2020-10-14 04:20:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 04:20:56,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:56,556 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:56,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:20:56,557 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:56,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:56,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1109532595, now seen corresponding path program 1 times [2020-10-14 04:20:56,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:56,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992408392] [2020-10-14 04:20:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:56,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:57,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:59,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:59,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 04:20:59,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:20:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2814 [2020-10-14 04:20:59,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:59,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:20:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:20:59,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:59,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:59,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:59,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:59,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:59,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:59,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:20:59,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:59,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:59,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:59,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:59,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:59,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:20:59,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:59,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 04:20:59,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:59,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:20:59,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:59,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 04:20:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:59,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:59,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:59,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:20:59,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:59,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 04:20:59,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:59,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:20:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:21:00,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992408392] [2020-10-14 04:21:00,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:00,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:00,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190613511] [2020-10-14 04:21:00,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:00,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:00,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:00,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:00,032 INFO L87 Difference]: Start difference. First operand 25566 states and 31360 transitions. Second operand 7 states. [2020-10-14 04:21:11,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:11,816 INFO L93 Difference]: Finished difference Result 54143 states and 66705 transitions. [2020-10-14 04:21:11,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:21:11,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-14 04:21:11,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:11,906 INFO L225 Difference]: With dead ends: 54143 [2020-10-14 04:21:11,907 INFO L226 Difference]: Without dead ends: 25012 [2020-10-14 04:21:11,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:21:11,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25012 states. [2020-10-14 04:21:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25012 to 24988. [2020-10-14 04:21:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24988 states. [2020-10-14 04:21:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24988 states to 24988 states and 27383 transitions. [2020-10-14 04:21:12,358 INFO L78 Accepts]: Start accepts. Automaton has 24988 states and 27383 transitions. Word has length 202 [2020-10-14 04:21:12,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:12,359 INFO L479 AbstractCegarLoop]: Abstraction has 24988 states and 27383 transitions. [2020-10-14 04:21:12,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:12,359 INFO L276 IsEmpty]: Start isEmpty. Operand 24988 states and 27383 transitions. [2020-10-14 04:21:12,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-14 04:21:12,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:12,366 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 04:21:12,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:21:12,366 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:12,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:12,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1806928799, now seen corresponding path program 1 times [2020-10-14 04:21:12,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:12,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286488633] [2020-10-14 04:21:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:12,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:12,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:16,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:16,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 04:21:16,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:21:16,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4038 [2020-10-14 04:21:16,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:16,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:21:16,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:21:16,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:16,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:16,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:16,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:16,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:16,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:16,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:16,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:16,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:16,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:16,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:16,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:16,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:16,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:21:16,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:16,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:21:16,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:16,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:16,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:16,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:16,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:21:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:16,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:16,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:16,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:21:16,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:16,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 04:21:16,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:16,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:16,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:16,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:16,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:21:16,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:16,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:21:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:16,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:16,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:16,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:21:16,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 04:21:16,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:16,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:16,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:16,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:21:16,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 04:21:17,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286488633] [2020-10-14 04:21:17,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:17,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:17,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754613042] [2020-10-14 04:21:17,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:17,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:17,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:17,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:17,149 INFO L87 Difference]: Start difference. First operand 24988 states and 27383 transitions. Second operand 7 states. [2020-10-14 04:21:26,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:26,052 INFO L93 Difference]: Finished difference Result 57279 states and 63982 transitions. [2020-10-14 04:21:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:21:26,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-14 04:21:26,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:26,149 INFO L225 Difference]: With dead ends: 57279 [2020-10-14 04:21:26,149 INFO L226 Difference]: Without dead ends: 32297 [2020-10-14 04:21:26,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 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 04:21:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32297 states. [2020-10-14 04:21:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32297 to 32253. [2020-10-14 04:21:26,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32253 states. [2020-10-14 04:21:26,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32253 states to 32253 states and 35439 transitions. [2020-10-14 04:21:26,748 INFO L78 Accepts]: Start accepts. Automaton has 32253 states and 35439 transitions. Word has length 275 [2020-10-14 04:21:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:26,749 INFO L479 AbstractCegarLoop]: Abstraction has 32253 states and 35439 transitions. [2020-10-14 04:21:26,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 32253 states and 35439 transitions. [2020-10-14 04:21:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 04:21:26,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:26,762 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:21:26,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:21:26,763 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:26,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1498235314, now seen corresponding path program 1 times [2020-10-14 04:21:26,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:26,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291519344] [2020-10-14 04:21:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:26,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:26,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:27,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:27,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:31,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:31,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-14 04:21:31,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:21:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 04:21:31,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:31,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:21:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:21:31,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:31,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:31,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:31,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:31,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:31,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:31,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:31,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:31,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:31,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:21:31,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:32,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:32,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:32,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:21:32,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:32,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:21:32,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:32,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:21:32,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:32,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:21:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:32,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:32,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:21:32,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:32,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 04:21:32,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:32,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:32,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:32,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:21:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:32,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-14 04:21:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:32,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:32,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:32,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:21:32,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:32,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 04:21:32,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:32,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:21:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:32,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:32,608 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 138 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 04:21:32,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291519344] [2020-10-14 04:21:32,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:32,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:32,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244652860] [2020-10-14 04:21:32,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:32,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:32,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:32,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:32,611 INFO L87 Difference]: Start difference. First operand 32253 states and 35439 transitions. Second operand 7 states. [2020-10-14 04:21:44,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:44,327 INFO L93 Difference]: Finished difference Result 83911 states and 93425 transitions. [2020-10-14 04:21:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:21:44,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-14 04:21:44,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:44,448 INFO L225 Difference]: With dead ends: 83911 [2020-10-14 04:21:44,448 INFO L226 Difference]: Without dead ends: 51664 [2020-10-14 04:21:44,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 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 04:21:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51664 states. [2020-10-14 04:21:45,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51664 to 50226. [2020-10-14 04:21:45,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50226 states. [2020-10-14 04:21:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50226 states to 50226 states and 54732 transitions. [2020-10-14 04:21:45,633 INFO L78 Accepts]: Start accepts. Automaton has 50226 states and 54732 transitions. Word has length 334 [2020-10-14 04:21:45,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:45,634 INFO L479 AbstractCegarLoop]: Abstraction has 50226 states and 54732 transitions. [2020-10-14 04:21:45,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:45,634 INFO L276 IsEmpty]: Start isEmpty. Operand 50226 states and 54732 transitions. [2020-10-14 04:21:45,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-14 04:21:45,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:45,647 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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 04:21:45,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:21:45,647 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:45,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:45,648 INFO L82 PathProgramCache]: Analyzing trace with hash 37881298, now seen corresponding path program 1 times [2020-10-14 04:21:45,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:45,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277285921] [2020-10-14 04:21:45,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:45,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:45,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:47,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:50,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:50,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-14 04:21:50,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:21:50,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 04:21:50,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:50,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:21:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-14 04:21:50,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:50,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:50,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:50,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:50,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:50,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:50,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:50,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:50,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:50,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:50,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:50,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:51,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:51,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:21:51,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:51,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 04:21:51,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:51,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:51,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:21:51,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:51,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:21:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:51,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:51,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 04:21:51,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:51,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-14 04:21:51,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:51,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:51,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 04:21:51,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:51,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-14 04:21:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:51,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:51,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:51,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:21:51,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 04:21:51,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:51,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:21:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:51,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 162 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 04:21:52,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277285921] [2020-10-14 04:21:52,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:52,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:52,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121949148] [2020-10-14 04:21:52,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:52,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:52,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:52,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:52,142 INFO L87 Difference]: Start difference. First operand 50226 states and 54732 transitions. Second operand 7 states. [2020-10-14 04:22:03,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:03,614 INFO L93 Difference]: Finished difference Result 111872 states and 122966 transitions. [2020-10-14 04:22:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:22:03,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 446 [2020-10-14 04:22:03,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:03,732 INFO L225 Difference]: With dead ends: 111872 [2020-10-14 04:22:03,732 INFO L226 Difference]: Without dead ends: 61652 [2020-10-14 04:22:03,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:03,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61652 states. [2020-10-14 04:22:05,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61652 to 61644. [2020-10-14 04:22:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61644 states. [2020-10-14 04:22:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61644 states to 61644 states and 67052 transitions. [2020-10-14 04:22:06,053 INFO L78 Accepts]: Start accepts. Automaton has 61644 states and 67052 transitions. Word has length 446 [2020-10-14 04:22:06,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:06,054 INFO L479 AbstractCegarLoop]: Abstraction has 61644 states and 67052 transitions. [2020-10-14 04:22:06,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 61644 states and 67052 transitions. [2020-10-14 04:22:06,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2020-10-14 04:22:06,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:06,097 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:22:06,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:22:06,098 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:06,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:06,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1483305057, now seen corresponding path program 1 times [2020-10-14 04:22:06,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:06,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397256563] [2020-10-14 04:22:06,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:06,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:06,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:06,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:11,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:11,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 684 [2020-10-14 04:22:11,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:22:11,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 04:22:11,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:11,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 565 [2020-10-14 04:22:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 04:22:11,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:11,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:11,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:11,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:11,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:11,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:11,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:22:11,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:11,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:11,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:11,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:11,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:22:11,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 04:22:11,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:11,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:22:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:11,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:12,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:12,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-14 04:22:12,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:12,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-14 04:22:12,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:12,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 426 [2020-10-14 04:22:12,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:22:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:12,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:12,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:12,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 04:22:12,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 04:22:12,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:12,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 04:22:12,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:12,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2020-10-14 04:22:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:12,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:12,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:12,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:22:12,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:12,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-14 04:22:12,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:12,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:22:12,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-14 04:22:13,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397256563] [2020-10-14 04:22:13,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:13,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:13,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636897898] [2020-10-14 04:22:13,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:13,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:13,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:13,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:13,352 INFO L87 Difference]: Start difference. First operand 61644 states and 67052 transitions. Second operand 7 states. [2020-10-14 04:22:29,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:29,485 INFO L93 Difference]: Finished difference Result 153503 states and 170994 transitions. [2020-10-14 04:22:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:22:29,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 668 [2020-10-14 04:22:29,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:29,820 INFO L225 Difference]: With dead ends: 153503 [2020-10-14 04:22:29,820 INFO L226 Difference]: Without dead ends: 91865 [2020-10-14 04:22:29,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91865 states. [2020-10-14 04:22:31,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91865 to 90639. [2020-10-14 04:22:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90639 states. [2020-10-14 04:22:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90639 states to 90639 states and 97597 transitions. [2020-10-14 04:22:31,136 INFO L78 Accepts]: Start accepts. Automaton has 90639 states and 97597 transitions. Word has length 668 [2020-10-14 04:22:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:31,137 INFO L479 AbstractCegarLoop]: Abstraction has 90639 states and 97597 transitions. [2020-10-14 04:22:31,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:31,138 INFO L276 IsEmpty]: Start isEmpty. Operand 90639 states and 97597 transitions. [2020-10-14 04:22:31,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2020-10-14 04:22:31,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:31,169 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:22:31,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:22:31,170 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:31,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:31,170 INFO L82 PathProgramCache]: Analyzing trace with hash -20688538, now seen corresponding path program 1 times [2020-10-14 04:22:31,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:31,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650006681] [2020-10-14 04:22:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:31,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:31,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:31,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:36,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:36,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 812 [2020-10-14 04:22:36,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:22:36,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 04:22:36,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:36,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:22:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 04:22:36,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:36,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:36,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:36,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:36,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:36,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:22:36,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:36,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:36,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:36,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:36,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:36,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:36,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:36,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:36,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:22:36,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:36,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:22:36,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:36,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:36,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:22:36,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:36,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:22:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:36,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:36,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:36,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 04:22:36,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 04:22:36,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:36,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:36,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:36,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:36,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-14 04:22:36,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:37,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-14 04:22:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:37,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:37,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:37,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 04:22:37,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:37,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:22:37,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:37,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 223 [2020-10-14 04:22:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:37,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2020-10-14 04:22:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:37,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:37,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:37,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:22:37,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:37,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:22:37,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:37,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:37,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:37,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 04:22:37,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:37,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:37,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-10-14 04:22:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:37,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:37,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:37,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:22:37,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:37,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:22:37,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:37,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:22:37,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:37,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 196 proven. 410 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2020-10-14 04:22:37,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650006681] [2020-10-14 04:22:37,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:37,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:37,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671208363] [2020-10-14 04:22:37,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:37,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:37,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:37,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:37,562 INFO L87 Difference]: Start difference. First operand 90639 states and 97597 transitions. Second operand 7 states. [2020-10-14 04:22:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:49,671 INFO L93 Difference]: Finished difference Result 180634 states and 194665 transitions. [2020-10-14 04:22:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:22:49,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 794 [2020-10-14 04:22:49,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:49,950 INFO L225 Difference]: With dead ends: 180634 [2020-10-14 04:22:49,951 INFO L226 Difference]: Without dead ends: 90709 [2020-10-14 04:22:50,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:50,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90709 states.