/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:45:38,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:45:38,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:45:38,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:45:38,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:45:38,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:45:38,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:45:38,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:45:38,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:45:38,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:45:38,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:45:38,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:45:38,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:45:38,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:45:38,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:45:38,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:45:38,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:45:38,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:45:38,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:45:38,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:45:38,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:45:38,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:45:38,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:45:38,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:45:38,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:45:38,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:45:38,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:45:38,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:45:38,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:45:38,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:45:38,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:45:38,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:45:38,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:45:38,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:45:38,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:45:38,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:45:38,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:45:38,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:45:38,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:45:38,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:45:38,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:45:38,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:45:38,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:45:38,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:45:38,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:45:38,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:45:38,976 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:45:38,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:45:38,977 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:45:38,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:45:38,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:45:38,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:45:38,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:45:38,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:45:38,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:45:38,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:45:38,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:45:38,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:45:38,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:45:38,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:45:38,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:45:38,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:45:38,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:45:38,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:45:38,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:45:38,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:45:38,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:45:38,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:45:38,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:45:38,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:45:38,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:45:38,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:45:39,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:45:39,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:45:39,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:45:39,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:45:39,326 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:45:39,327 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label10.c [2020-10-13 09:45:39,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8ba02137/de1479a4d4e649dc9a945f2d3bfe1a0f/FLAGba05b416f [2020-10-13 09:45:40,144 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:45:40,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label10.c [2020-10-13 09:45:40,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8ba02137/de1479a4d4e649dc9a945f2d3bfe1a0f/FLAGba05b416f [2020-10-13 09:45:40,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8ba02137/de1479a4d4e649dc9a945f2d3bfe1a0f [2020-10-13 09:45:40,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:45:40,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:45:40,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:45:40,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:45:40,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:45:40,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:45:40" (1/1) ... [2020-10-13 09:45:40,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0865a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:40, skipping insertion in model container [2020-10-13 09:45:40,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:45:40" (1/1) ... [2020-10-13 09:45:40,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:45:40,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:45:41,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:45:41,852 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:45:42,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:45:42,508 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:45:42,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:42 WrapperNode [2020-10-13 09:45:42,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:45:42,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:45:42,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:45:42,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:45:42,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:42" (1/1) ... [2020-10-13 09:45:42,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:42" (1/1) ... [2020-10-13 09:45:42,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:42" (1/1) ... [2020-10-13 09:45:42,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:42" (1/1) ... [2020-10-13 09:45:42,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:42" (1/1) ... [2020-10-13 09:45:42,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:42" (1/1) ... [2020-10-13 09:45:42,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:42" (1/1) ... [2020-10-13 09:45:42,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:45:42,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:45:42,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:45:42,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:45:42,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:45:42,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:45:42,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:45:42,891 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:45:42,891 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:45:42,892 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:45:42,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:45:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:45:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:45:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:45:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:45:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:45:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:45:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:45:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:45:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:45:49,931 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:45:49,932 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:45:49,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:45:49 BoogieIcfgContainer [2020-10-13 09:45:49,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:45:49,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:45:49,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:45:49,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:45:49,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:45:40" (1/3) ... [2020-10-13 09:45:49,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ce29b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:45:49, skipping insertion in model container [2020-10-13 09:45:49,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:42" (2/3) ... [2020-10-13 09:45:49,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ce29b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:45:49, skipping insertion in model container [2020-10-13 09:45:49,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:45:49" (3/3) ... [2020-10-13 09:45:49,971 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label10.c [2020-10-13 09:45:49,984 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:45:50,001 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:45:50,020 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:45:50,061 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:45:50,062 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:45:50,062 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:45:50,062 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:45:50,062 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:45:50,062 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:45:50,063 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:45:50,063 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:45:50,116 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:45:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 09:45:50,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:50,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:50,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:50,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:50,139 INFO L82 PathProgramCache]: Analyzing trace with hash 717263041, now seen corresponding path program 1 times [2020-10-13 09:45:50,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:50,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882902501] [2020-10-13 09:45:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:50,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:50,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 09:45:50,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:50,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-10-13 09:45:50,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:50,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:45:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:45:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:45:50,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:45:50,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:50,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:50,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:50,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:50,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:50,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:45:50,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:45:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:45:51,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882902501] [2020-10-13 09:45:51,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:45:51,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:45:51,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802009347] [2020-10-13 09:45:51,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:45:51,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:51,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:45:51,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:45:51,031 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-13 09:46:01,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:01,259 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-13 09:46:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:01,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-13 09:46:01,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:01,290 INFO L225 Difference]: With dead ends: 2270 [2020-10-13 09:46:01,291 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:46:01,300 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 [2020-10-13 09:46:01,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:46:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-13 09:46:01,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-13 09:46:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-13 09:46:01,437 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 24 [2020-10-13 09:46:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:01,438 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-13 09:46:01,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:46:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-13 09:46:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 09:46:01,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:01,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:01,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:46:01,444 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:01,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:01,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1407334756, now seen corresponding path program 1 times [2020-10-13 09:46:01,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:01,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188286572] [2020-10-13 09:46:01,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:01,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:02,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:02,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 09:46:02,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:02,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-10-13 09:46:02,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:02,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:02,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:46:02,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:46:02,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:46:02,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:02,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:02,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:02,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:02,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:46:02,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:02,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:02,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:02,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:02,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:46:02,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:46:02,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:46:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:02,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188286572] [2020-10-13 09:46:02,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:02,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:02,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644951211] [2020-10-13 09:46:02,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:02,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:02,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:02,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:02,459 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-13 09:46:11,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:11,493 INFO L93 Difference]: Finished difference Result 4276 states and 6734 transitions. [2020-10-13 09:46:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:11,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 09:46:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:11,516 INFO L225 Difference]: With dead ends: 4276 [2020-10-13 09:46:11,516 INFO L226 Difference]: Without dead ends: 2857 [2020-10-13 09:46:11,521 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 [2020-10-13 09:46:11,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-13 09:46:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-13 09:46:11,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-13 09:46:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4026 transitions. [2020-10-13 09:46:11,628 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4026 transitions. Word has length 94 [2020-10-13 09:46:11,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:11,630 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4026 transitions. [2020-10-13 09:46:11,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4026 transitions. [2020-10-13 09:46:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 09:46:11,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:11,646 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:46:11,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:46:11,647 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:11,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:11,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1302475476, now seen corresponding path program 1 times [2020-10-13 09:46:11,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:11,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472471758] [2020-10-13 09:46:11,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:11,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:11,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:12,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:12,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:46:12,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:12,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-13 09:46:12,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:12,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:12,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:46:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:46:12,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:12,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:12,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:12,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:12,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:12,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:12,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:46:12,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:12,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:12,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:12,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:12,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:46:12,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:12,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:46:12,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:12,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:46:12,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:12,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472471758] [2020-10-13 09:46:12,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:12,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:12,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536063739] [2020-10-13 09:46:12,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:12,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:12,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:12,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:12,854 INFO L87 Difference]: Start difference. First operand 2853 states and 4026 transitions. Second operand 5 states. [2020-10-13 09:46:23,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:23,811 INFO L93 Difference]: Finished difference Result 8547 states and 12183 transitions. [2020-10-13 09:46:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:23,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 09:46:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:23,840 INFO L225 Difference]: With dead ends: 8547 [2020-10-13 09:46:23,841 INFO L226 Difference]: Without dead ends: 5700 [2020-10-13 09:46:23,848 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 [2020-10-13 09:46:23,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-10-13 09:46:23,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5696. [2020-10-13 09:46:23,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-13 09:46:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7350 transitions. [2020-10-13 09:46:23,988 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7350 transitions. Word has length 98 [2020-10-13 09:46:23,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:23,989 INFO L479 AbstractCegarLoop]: Abstraction has 5696 states and 7350 transitions. [2020-10-13 09:46:23,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:23,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7350 transitions. [2020-10-13 09:46:23,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 09:46:23,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:23,992 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:46:23,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:46:23,992 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:23,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:23,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1329031576, now seen corresponding path program 1 times [2020-10-13 09:46:23,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:23,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465009896] [2020-10-13 09:46:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:24,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:24,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:24,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:24,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:24,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 09:46:24,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:46:24,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-10-13 09:46:24,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:24,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:46:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:46:24,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:25,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:25,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:25,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:25,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:25,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:25,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:46:25,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:25,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:25,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:25,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:25,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:46:25,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:25,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:46:25,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:25,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:25,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:25,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:46:25,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:25,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465009896] [2020-10-13 09:46:25,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:25,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:25,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268907580] [2020-10-13 09:46:25,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:25,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:25,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:25,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:25,276 INFO L87 Difference]: Start difference. First operand 5696 states and 7350 transitions. Second operand 5 states. [2020-10-13 09:46:31,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:31,226 INFO L93 Difference]: Finished difference Result 11408 states and 14745 transitions. [2020-10-13 09:46:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:31,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 09:46:31,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:31,258 INFO L225 Difference]: With dead ends: 11408 [2020-10-13 09:46:31,258 INFO L226 Difference]: Without dead ends: 5700 [2020-10-13 09:46:31,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:46:31,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-10-13 09:46:31,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5696. [2020-10-13 09:46:31,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-13 09:46:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7342 transitions. [2020-10-13 09:46:31,399 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7342 transitions. Word has length 112 [2020-10-13 09:46:31,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:31,401 INFO L479 AbstractCegarLoop]: Abstraction has 5696 states and 7342 transitions. [2020-10-13 09:46:31,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:31,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7342 transitions. [2020-10-13 09:46:31,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 09:46:31,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:31,404 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:46:31,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:46:31,404 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:31,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:31,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1858675636, now seen corresponding path program 1 times [2020-10-13 09:46:31,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:31,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425758454] [2020-10-13 09:46:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:31,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:31,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:32,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:32,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:46:32,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:32,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-13 09:46:32,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 09:46:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:46:32,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:32,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:32,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:32,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:32,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:32,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:32,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:46:32,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:32,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:32,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:32,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:32,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:46:32,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:32,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-13 09:46:32,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:32,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:32,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:32,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:46:32,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:32,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425758454] [2020-10-13 09:46:32,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:32,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:32,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738566811] [2020-10-13 09:46:32,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:32,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:32,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:32,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:32,394 INFO L87 Difference]: Start difference. First operand 5696 states and 7342 transitions. Second operand 5 states. [2020-10-13 09:46:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:45,402 INFO L93 Difference]: Finished difference Result 12807 states and 17110 transitions. [2020-10-13 09:46:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:45,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 09:46:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:45,432 INFO L225 Difference]: With dead ends: 12807 [2020-10-13 09:46:45,432 INFO L226 Difference]: Without dead ends: 7117 [2020-10-13 09:46:45,446 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 [2020-10-13 09:46:45,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7117 states. [2020-10-13 09:46:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7117 to 7113. [2020-10-13 09:46:45,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7113 states. [2020-10-13 09:46:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 8991 transitions. [2020-10-13 09:46:45,595 INFO L78 Accepts]: Start accepts. Automaton has 7113 states and 8991 transitions. Word has length 114 [2020-10-13 09:46:45,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:45,596 INFO L479 AbstractCegarLoop]: Abstraction has 7113 states and 8991 transitions. [2020-10-13 09:46:45,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:45,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7113 states and 8991 transitions. [2020-10-13 09:46:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 09:46:45,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:45,598 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:46:45,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:46:45,599 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:45,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:45,599 INFO L82 PathProgramCache]: Analyzing trace with hash -508247255, now seen corresponding path program 1 times [2020-10-13 09:46:45,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:45,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625075766] [2020-10-13 09:46:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:45,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:45,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:46,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:46,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:46,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:46:46,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:46:46,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-10-13 09:46:46,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:46:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:46:46,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:46,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:46,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:46,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:46,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:46,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:46:46,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:46,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:46,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:46,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:46,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:46:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:46:46,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:46:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:46,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625075766] [2020-10-13 09:46:46,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:46,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:46,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416226731] [2020-10-13 09:46:46,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:46,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:46,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:46,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:46,732 INFO L87 Difference]: Start difference. First operand 7113 states and 8991 transitions. Second operand 5 states. [2020-10-13 09:46:55,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:55,151 INFO L93 Difference]: Finished difference Result 14243 states and 18032 transitions. [2020-10-13 09:46:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:55,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 09:46:55,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:55,188 INFO L225 Difference]: With dead ends: 14243 [2020-10-13 09:46:55,188 INFO L226 Difference]: Without dead ends: 7117 [2020-10-13 09:46:55,203 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 [2020-10-13 09:46:55,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7117 states. [2020-10-13 09:46:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7117 to 7113. [2020-10-13 09:46:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7113 states. [2020-10-13 09:46:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 8983 transitions. [2020-10-13 09:46:55,356 INFO L78 Accepts]: Start accepts. Automaton has 7113 states and 8983 transitions. Word has length 119 [2020-10-13 09:46:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:55,356 INFO L479 AbstractCegarLoop]: Abstraction has 7113 states and 8983 transitions. [2020-10-13 09:46:55,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 7113 states and 8983 transitions. [2020-10-13 09:46:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 09:46:55,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:55,359 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:46:55,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:46:55,360 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:55,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:55,360 INFO L82 PathProgramCache]: Analyzing trace with hash -864221836, now seen corresponding path program 1 times [2020-10-13 09:46:55,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:55,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571056936] [2020-10-13 09:46:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:55,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:55,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:55,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:55,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 09:46:55,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-13 09:46:55,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:46:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:46:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:56,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:56,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:56,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:56,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:56,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:46:56,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:56,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:56,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:56,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:56,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:46:56,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 09:46:56,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:56,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:56,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:46:56,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:56,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571056936] [2020-10-13 09:46:56,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:56,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:56,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349543345] [2020-10-13 09:46:56,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:56,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:56,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:56,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:56,267 INFO L87 Difference]: Start difference. First operand 7113 states and 8983 transitions. Second operand 5 states. [2020-10-13 09:47:05,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:05,607 INFO L93 Difference]: Finished difference Result 18479 states and 23844 transitions. [2020-10-13 09:47:05,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:47:05,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-13 09:47:05,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:05,641 INFO L225 Difference]: With dead ends: 18479 [2020-10-13 09:47:05,641 INFO L226 Difference]: Without dead ends: 11372 [2020-10-13 09:47:05,655 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 [2020-10-13 09:47:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11372 states. [2020-10-13 09:47:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11372 to 11364. [2020-10-13 09:47:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11364 states. [2020-10-13 09:47:05,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11364 states to 11364 states and 14456 transitions. [2020-10-13 09:47:05,853 INFO L78 Accepts]: Start accepts. Automaton has 11364 states and 14456 transitions. Word has length 146 [2020-10-13 09:47:05,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:05,854 INFO L479 AbstractCegarLoop]: Abstraction has 11364 states and 14456 transitions. [2020-10-13 09:47:05,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:47:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 11364 states and 14456 transitions. [2020-10-13 09:47:05,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 09:47:05,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:05,858 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:47:05,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:47:05,858 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:05,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:05,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1582715104, now seen corresponding path program 1 times [2020-10-13 09:47:05,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:05,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965798059] [2020-10-13 09:47:05,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:05,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:06,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:06,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:06,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 09:47:06,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:47:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-10-13 09:47:06,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:47:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:47:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:06,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:06,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:06,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:06,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:06,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:47:06,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:06,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:06,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:06,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:06,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 09:47:06,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:06,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:47:06,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 09:47:06,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:47:06,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965798059] [2020-10-13 09:47:06,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:06,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:47:06,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622952955] [2020-10-13 09:47:06,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:47:06,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:06,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:47:06,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:47:06,934 INFO L87 Difference]: Start difference. First operand 11364 states and 14456 transitions. Second operand 6 states. [2020-10-13 09:47:21,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:21,692 INFO L93 Difference]: Finished difference Result 26989 states and 35403 transitions. [2020-10-13 09:47:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:47:21,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-10-13 09:47:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:21,748 INFO L225 Difference]: With dead ends: 26989 [2020-10-13 09:47:21,748 INFO L226 Difference]: Without dead ends: 15631 [2020-10-13 09:47:21,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:47:21,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15631 states. [2020-10-13 09:47:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15631 to 15623. [2020-10-13 09:47:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15623 states. [2020-10-13 09:47:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15623 states to 15623 states and 20510 transitions. [2020-10-13 09:47:22,078 INFO L78 Accepts]: Start accepts. Automaton has 15623 states and 20510 transitions. Word has length 172 [2020-10-13 09:47:22,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:22,079 INFO L479 AbstractCegarLoop]: Abstraction has 15623 states and 20510 transitions. [2020-10-13 09:47:22,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:47:22,079 INFO L276 IsEmpty]: Start isEmpty. Operand 15623 states and 20510 transitions. [2020-10-13 09:47:22,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-10-13 09:47:22,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:22,110 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:47:22,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:47:22,111 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:22,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:22,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1613256316, now seen corresponding path program 1 times [2020-10-13 09:47:22,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:22,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865382970] [2020-10-13 09:47:22,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:22,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:23,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:27,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:27,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 528 [2020-10-13 09:47:27,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:47:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 09:47:27,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 501 [2020-10-13 09:47:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:47:27,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:27,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:27,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:27,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:27,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:27,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:27,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:47:27,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:27,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:27,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:27,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:27,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:27,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:27,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:27,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:27,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:47:27,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:27,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:47:27,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:27,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:27,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:47:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:27,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:28,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:28,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-13 09:47:28,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:28,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-13 09:47:28,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-13 09:47:28,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:28,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:47:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:28,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:28,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:28,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:47:28,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:28,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:47:28,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:28,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:28,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:28,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 09:47:28,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:47:28,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865382970] [2020-10-13 09:47:28,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:28,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:47:28,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851999219] [2020-10-13 09:47:28,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:47:28,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:28,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:47:28,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:47:28,767 INFO L87 Difference]: Start difference. First operand 15623 states and 20510 transitions. Second operand 6 states. [2020-10-13 09:47:39,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:39,677 INFO L93 Difference]: Finished difference Result 37629 states and 51573 transitions. [2020-10-13 09:47:39,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:47:39,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 514 [2020-10-13 09:47:39,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:39,762 INFO L225 Difference]: With dead ends: 37629 [2020-10-13 09:47:39,763 INFO L226 Difference]: Without dead ends: 22012 [2020-10-13 09:47:39,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:47:39,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22012 states. [2020-10-13 09:47:40,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22012 to 22004. [2020-10-13 09:47:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22004 states. [2020-10-13 09:47:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22004 states to 22004 states and 30115 transitions. [2020-10-13 09:47:40,189 INFO L78 Accepts]: Start accepts. Automaton has 22004 states and 30115 transitions. Word has length 514 [2020-10-13 09:47:40,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:40,190 INFO L479 AbstractCegarLoop]: Abstraction has 22004 states and 30115 transitions. [2020-10-13 09:47:40,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:47:40,191 INFO L276 IsEmpty]: Start isEmpty. Operand 22004 states and 30115 transitions. [2020-10-13 09:47:40,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-10-13 09:47:40,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:40,234 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:47:40,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:47:40,235 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:40,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:40,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1652877095, now seen corresponding path program 1 times [2020-10-13 09:47:40,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:40,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69204701] [2020-10-13 09:47:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:40,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:42,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:42,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 586 [2020-10-13 09:47:42,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:42,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1683 [2020-10-13 09:47:42,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 09:47:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:47:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 09:47:42,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:42,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:42,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:42,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:42,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:42,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:42,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:47:42,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:47:42,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:42,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:43,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:43,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-13 09:47:43,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:43,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1503 [2020-10-13 09:47:43,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 09:47:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:47:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 553 [2020-10-13 09:47:43,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:44,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:47:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:44,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:44,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:47:44,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:44,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-13 09:47:44,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:47:44,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:47:44,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-13 09:47:44,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:47:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:45,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:45,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 09:47:45,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:45,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:47:45,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:47:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:47:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 09:47:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:47:45,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69204701] [2020-10-13 09:47:45,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:47:45,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 09:47:45,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671940942] [2020-10-13 09:47:45,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:47:45,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:45,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:47:45,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:47:45,978 INFO L87 Difference]: Start difference. First operand 22004 states and 30115 transitions. Second operand 8 states. [2020-10-13 09:48:00,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:00,300 INFO L93 Difference]: Finished difference Result 44193 states and 60940 transitions. [2020-10-13 09:48:00,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:48:00,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 572 [2020-10-13 09:48:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:00,362 INFO L225 Difference]: With dead ends: 44193 [2020-10-13 09:48:00,362 INFO L226 Difference]: Without dead ends: 22195 [2020-10-13 09:48:00,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:48:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22195 states. [2020-10-13 09:48:00,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22195 to 20757. [2020-10-13 09:48:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20757 states. [2020-10-13 09:48:00,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20757 states to 20757 states and 24625 transitions. [2020-10-13 09:48:00,763 INFO L78 Accepts]: Start accepts. Automaton has 20757 states and 24625 transitions. Word has length 572 [2020-10-13 09:48:00,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:00,764 INFO L479 AbstractCegarLoop]: Abstraction has 20757 states and 24625 transitions. [2020-10-13 09:48:00,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:48:00,764 INFO L276 IsEmpty]: Start isEmpty. Operand 20757 states and 24625 transitions. [2020-10-13 09:48:00,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2020-10-13 09:48:00,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:00,827 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:00,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:48:00,828 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:00,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:00,828 INFO L82 PathProgramCache]: Analyzing trace with hash -260737670, now seen corresponding path program 1 times [2020-10-13 09:48:00,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:00,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087977311] [2020-10-13 09:48:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:01,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:02,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:05,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:05,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 785 [2020-10-13 09:48:05,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:48:05,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 09:48:05,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:05,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:48:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 09:48:05,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:06,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:06,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:06,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:06,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:06,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:06,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:06,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:06,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:06,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:06,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:06,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:48:06,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:06,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:48:06,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:48:06,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:06,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:48:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:06,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:06,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:06,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:48:06,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:06,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:48:06,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:48:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:48:06,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:06,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 09:48:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:06,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:06,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-13 09:48:06,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-13 09:48:06,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 550 [2020-10-13 09:48:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:06,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:48:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:06,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:06,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:06,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:48:06,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:06,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:48:06,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:06,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:06,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:48:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:06,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:06,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:06,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 09:48:06,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:06,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:48:06,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:06,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 125 proven. 72 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-13 09:48:07,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087977311] [2020-10-13 09:48:07,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:07,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:48:07,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447705945] [2020-10-13 09:48:07,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:48:07,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:07,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:48:07,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:48:07,495 INFO L87 Difference]: Start difference. First operand 20757 states and 24625 transitions. Second operand 7 states. [2020-10-13 09:48:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:20,932 INFO L93 Difference]: Finished difference Result 43150 states and 51269 transitions. [2020-10-13 09:48:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:48:20,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 767 [2020-10-13 09:48:20,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:20,983 INFO L225 Difference]: With dead ends: 43150 [2020-10-13 09:48:20,983 INFO L226 Difference]: Without dead ends: 20924 [2020-10-13 09:48:21,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:48:21,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20924 states. [2020-10-13 09:48:21,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20924 to 20877. [2020-10-13 09:48:21,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20877 states. [2020-10-13 09:48:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20877 states to 20877 states and 22425 transitions. [2020-10-13 09:48:21,343 INFO L78 Accepts]: Start accepts. Automaton has 20877 states and 22425 transitions. Word has length 767 [2020-10-13 09:48:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:21,344 INFO L479 AbstractCegarLoop]: Abstraction has 20877 states and 22425 transitions. [2020-10-13 09:48:21,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:48:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 20877 states and 22425 transitions. [2020-10-13 09:48:21,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-13 09:48:21,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:21,397 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:21,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:48:21,398 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:21,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:21,399 INFO L82 PathProgramCache]: Analyzing trace with hash 309558943, now seen corresponding path program 1 times [2020-10-13 09:48:21,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:21,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699709154] [2020-10-13 09:48:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:21,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:23,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:24,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:26,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:26,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-13 09:48:26,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:48:26,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-13 09:48:26,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:48:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 09:48:26,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:26,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:26,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:26,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:26,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:26,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:26,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:26,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:26,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:26,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:26,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:26,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:26,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:48:26,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:48:26,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:48:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:26,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:48:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:26,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:26,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:48:26,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:26,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:48:26,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:48:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:48:26,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:27,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-13 09:48:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:27,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:27,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-13 09:48:27,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:27,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-13 09:48:27,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 550 [2020-10-13 09:48:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:27,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:27,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:48:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:27,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:27,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:48:27,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:27,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:48:27,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:27,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:27,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:27,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:48:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:27,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:27,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 09:48:27,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:27,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:48:27,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:27,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:27,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 158 proven. 105 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-13 09:48:28,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699709154] [2020-10-13 09:48:28,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:28,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:48:28,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973368034] [2020-10-13 09:48:28,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:48:28,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:28,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:48:28,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:48:28,039 INFO L87 Difference]: Start difference. First operand 20877 states and 22425 transitions. Second operand 7 states. [2020-10-13 09:48:37,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:37,665 INFO L93 Difference]: Finished difference Result 41847 states and 45016 transitions. [2020-10-13 09:48:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:48:37,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 800 [2020-10-13 09:48:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:37,723 INFO L225 Difference]: With dead ends: 41847 [2020-10-13 09:48:37,723 INFO L226 Difference]: Without dead ends: 20976 [2020-10-13 09:48:37,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:48:37,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20976 states. [2020-10-13 09:48:38,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20976 to 20938. [2020-10-13 09:48:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20938 states. [2020-10-13 09:48:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20938 states to 20938 states and 22492 transitions. [2020-10-13 09:48:38,102 INFO L78 Accepts]: Start accepts. Automaton has 20938 states and 22492 transitions. Word has length 800 [2020-10-13 09:48:38,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:38,103 INFO L479 AbstractCegarLoop]: Abstraction has 20938 states and 22492 transitions. [2020-10-13 09:48:38,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:48:38,103 INFO L276 IsEmpty]: Start isEmpty. Operand 20938 states and 22492 transitions. [2020-10-13 09:48:38,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2020-10-13 09:48:38,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:38,142 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:38,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:48:38,143 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:38,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:38,144 INFO L82 PathProgramCache]: Analyzing trace with hash 833549873, now seen corresponding path program 1 times [2020-10-13 09:48:38,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:38,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427050695] [2020-10-13 09:48:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:38,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:38,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:40,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:41,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:43,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:43,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 859 [2020-10-13 09:48:43,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:48:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 09:48:43,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:48:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:48:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:48:43,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:43,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:43,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:43,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:43,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:43,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:43,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:48:43,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:48:43,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:43,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:43,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:43,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:43,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:48:43,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:43,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:48:43,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:43,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:43,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:48:43,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:48:43,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:43,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:48:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:43,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:43,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:43,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:48:43,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:43,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:48:43,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:43,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:43,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:48:43,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:43,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:43,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-13 09:48:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:43,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:43,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:43,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:48:43,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:43,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:48:43,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:48:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:43,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:43,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-13 09:48:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:43,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:43,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-13 09:48:43,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:43,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-13 09:48:43,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 550 [2020-10-13 09:48:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:43,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:43,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:48:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:43,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:43,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:43,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:48:44,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:44,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:48:44,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:44,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:44,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:44,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:48:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:44,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:44,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:44,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 09:48:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:48:44,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 68 proven. 236 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-13 09:48:44,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427050695] [2020-10-13 09:48:44,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:44,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:48:44,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623485759] [2020-10-13 09:48:44,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:48:44,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:44,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:48:44,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:48:44,645 INFO L87 Difference]: Start difference. First operand 20938 states and 22492 transitions. Second operand 7 states. [2020-10-13 09:48:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:53,188 INFO L93 Difference]: Finished difference Result 43532 states and 46875 transitions. [2020-10-13 09:48:53,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:48:53,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 839 [2020-10-13 09:48:53,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:53,228 INFO L225 Difference]: With dead ends: 43532 [2020-10-13 09:48:53,228 INFO L226 Difference]: Without dead ends: 22600 [2020-10-13 09:48:53,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:48:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22600 states. [2020-10-13 09:48:53,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22600 to 22515. [2020-10-13 09:48:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22515 states. [2020-10-13 09:48:53,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22515 states to 22515 states and 24188 transitions. [2020-10-13 09:48:53,603 INFO L78 Accepts]: Start accepts. Automaton has 22515 states and 24188 transitions. Word has length 839 [2020-10-13 09:48:53,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:53,604 INFO L479 AbstractCegarLoop]: Abstraction has 22515 states and 24188 transitions. [2020-10-13 09:48:53,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:48:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 22515 states and 24188 transitions. [2020-10-13 09:48:53,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2020-10-13 09:48:53,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:53,648 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:53,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:48:53,649 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:53,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:53,650 INFO L82 PathProgramCache]: Analyzing trace with hash 458339974, now seen corresponding path program 1 times [2020-10-13 09:48:53,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:53,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761842085] [2020-10-13 09:48:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:53,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:58,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:58,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 932 [2020-10-13 09:48:58,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:48:58,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 09:48:58,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:58,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:58,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 246 [2020-10-13 09:48:58,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 09:48:58,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:58,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:58,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:58,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:58,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:58,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:58,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:58,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:58,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:58,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:48:58,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:58,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:48:58,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:58,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:48:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:59,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:59,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:59,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:48:59,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:59,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:48:59,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:59,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:59,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:59,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:48:59,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:59,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-13 09:48:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:59,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:59,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:59,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:48:59,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:59,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:48:59,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:48:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:48:59,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:59,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-13 09:48:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:59,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:59,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:59,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-13 09:48:59,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:59,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 09:48:59,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 550 [2020-10-13 09:48:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:59,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:59,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:48:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:59,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:59,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:59,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:48:59,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:59,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:48:59,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:59,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:59,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:48:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:59,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:59,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 09:48:59,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:59,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:48:59,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:59,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 287 proven. 105 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2020-10-13 09:49:00,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761842085] [2020-10-13 09:49:00,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:00,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:49:00,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430720915] [2020-10-13 09:49:00,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:49:00,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:00,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:49:00,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:49:00,175 INFO L87 Difference]: Start difference. First operand 22515 states and 24188 transitions. Second operand 7 states. [2020-10-13 09:49:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:11,276 INFO L93 Difference]: Finished difference Result 51067 states and 55440 transitions. [2020-10-13 09:49:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:49:11,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 912 [2020-10-13 09:49:11,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:11,347 INFO L225 Difference]: With dead ends: 51067 [2020-10-13 09:49:11,347 INFO L226 Difference]: Without dead ends: 29970 [2020-10-13 09:49:11,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:49:11,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29970 states. [2020-10-13 09:49:11,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29970 to 29903. [2020-10-13 09:49:11,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29903 states. [2020-10-13 09:49:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29903 states to 29903 states and 32157 transitions. [2020-10-13 09:49:11,767 INFO L78 Accepts]: Start accepts. Automaton has 29903 states and 32157 transitions. Word has length 912 [2020-10-13 09:49:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:11,768 INFO L479 AbstractCegarLoop]: Abstraction has 29903 states and 32157 transitions. [2020-10-13 09:49:11,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:49:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 29903 states and 32157 transitions. [2020-10-13 09:49:11,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2020-10-13 09:49:11,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:11,807 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:49:11,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:49:11,807 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:11,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1063242452, now seen corresponding path program 1 times [2020-10-13 09:49:11,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:11,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730512423] [2020-10-13 09:49:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:12,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:16,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:16,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1036 [2020-10-13 09:49:16,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:49:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 09:49:16,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:49:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:49:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:49:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:17,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:17,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:17,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:17,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:17,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:17,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:49:17,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:49:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:17,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:17,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:17,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:49:17,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:17,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:49:17,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:49:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:49:17,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:17,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:49:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:17,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:17,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:17,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 09:49:17,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:49:17,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-10-13 09:49:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:17,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:17,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 09:49:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:17,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:17,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 09:49:17,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:17,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:49:17,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 09:49:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:17,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:17,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:49:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:18,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:18,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-13 09:49:18,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-13 09:49:18,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 550 [2020-10-13 09:49:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:18,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:18,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:18,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:18,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:49:18,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:18,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:49:18,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:18,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:18,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:18,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:18,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:18,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:49:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:18,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:18,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:18,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 09:49:18,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:18,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:49:18,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:18,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 68 proven. 351 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2020-10-13 09:49:19,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730512423] [2020-10-13 09:49:19,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:19,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:49:19,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072092370] [2020-10-13 09:49:19,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:49:19,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:19,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:49:19,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:49:19,161 INFO L87 Difference]: Start difference. First operand 29903 states and 32157 transitions. Second operand 8 states.