/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/Problem15_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:00:54,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:00:54,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:00:54,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:00:54,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:00:54,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:00:54,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:00:54,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:00:54,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:00:54,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:00:54,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:00:54,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:00:54,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:00:54,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:00:54,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:00:54,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:00:54,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:00:54,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:00:54,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:00:54,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:00:54,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:00:54,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:00:54,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:00:54,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:00:54,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:00:54,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:00:54,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:00:54,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:00:54,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:00:54,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:00:54,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:00:54,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:00:54,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:00:54,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:00:54,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:00:54,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:00:54,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:00:54,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:00:54,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:00:54,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:00:54,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:00:54,080 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 09:00:54,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:00:54,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:00:54,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:00:54,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:00:54,105 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:00:54,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:00:54,106 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:00:54,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:00:54,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:00:54,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:00:54,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:00:54,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:00:54,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:00:54,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:00:54,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:00:54,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:00:54,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:00:54,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:00:54,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:00:54,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:00:54,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:00:54,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:00:54,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:00:54,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:00:54,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:00:54,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:00:54,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:00:54,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:00:54,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:00:54,110 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 09:00:54,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:00:54,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:00:54,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:00:54,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:00:54,449 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:00:54,449 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label16.c [2020-10-13 09:00:54,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58e3ce828/a7a496e0ed1742bcaf11d0b297a52f48/FLAGb9e80c833 [2020-10-13 09:00:55,198 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:00:55,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label16.c [2020-10-13 09:00:55,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58e3ce828/a7a496e0ed1742bcaf11d0b297a52f48/FLAGb9e80c833 [2020-10-13 09:00:55,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58e3ce828/a7a496e0ed1742bcaf11d0b297a52f48 [2020-10-13 09:00:55,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:00:55,381 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:00:55,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:00:55,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:00:55,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:00:55,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:00:55" (1/1) ... [2020-10-13 09:00:55,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fa96a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:00:55, skipping insertion in model container [2020-10-13 09:00:55,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:00:55" (1/1) ... [2020-10-13 09:00:55,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:00:55,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:00:56,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:00:56,350 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:00:56,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:00:56,690 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:00:56,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:00:56 WrapperNode [2020-10-13 09:00:56,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:00:56,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:00:56,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:00:56,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:00:56,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:00:56" (1/1) ... [2020-10-13 09:00:56,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:00:56" (1/1) ... [2020-10-13 09:00:56,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:00:56" (1/1) ... [2020-10-13 09:00:56,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:00:56" (1/1) ... [2020-10-13 09:00:56,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:00:56" (1/1) ... [2020-10-13 09:00:56,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:00:56" (1/1) ... [2020-10-13 09:00:56,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:00:56" (1/1) ... [2020-10-13 09:00:56,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:00:56,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:00:56,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:00:56,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:00:56,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:00:56" (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 09:00:56,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:00:56,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:00:56,985 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:00:56,985 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:00:56,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:00:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:00:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:00:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:00:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:00:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:00:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:00:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:00:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:01:04,779 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:01:04,779 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:01:04,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:01:04 BoogieIcfgContainer [2020-10-13 09:01:04,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:01:04,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:01:04,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:01:04,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:01:04,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:00:55" (1/3) ... [2020-10-13 09:01:04,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415edef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:01:04, skipping insertion in model container [2020-10-13 09:01:04,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:00:56" (2/3) ... [2020-10-13 09:01:04,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415edef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:01:04, skipping insertion in model container [2020-10-13 09:01:04,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:01:04" (3/3) ... [2020-10-13 09:01:04,800 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label16.c [2020-10-13 09:01:04,813 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:01:04,823 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:01:04,842 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:01:04,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:01:04,872 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:01:04,872 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:01:04,872 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:01:04,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:01:04,872 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:01:04,872 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:01:04,872 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:01:04,905 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:01:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 09:01:04,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:04,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:04,919 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:04,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:04,926 INFO L82 PathProgramCache]: Analyzing trace with hash -50532616, now seen corresponding path program 1 times [2020-10-13 09:01:04,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:04,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860250089] [2020-10-13 09:01:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:05,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:05,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:01:05,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:05,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-13 09:01:05,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:01:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:01:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:01:05,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 09:01:05,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:05,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:05,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:05,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:05,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:05,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:01:05,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:01:05,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:06,034 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 09:01:06,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860250089] [2020-10-13 09:01:06,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:01:06,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:01:06,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883401930] [2020-10-13 09:01:06,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:01:06,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:06,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:01:06,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:01:06,188 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:01:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:14,372 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-13 09:01:14,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:14,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-13 09:01:14,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:14,397 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 09:01:14,397 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 09:01:14,407 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 09:01:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 09:01:14,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-13 09:01:14,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:01:14,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-13 09:01:14,513 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 68 [2020-10-13 09:01:14,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:14,514 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-13 09:01:14,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:01:14,514 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-13 09:01:14,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 09:01:14,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:14,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:01:14,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:01:14,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:14,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:14,522 INFO L82 PathProgramCache]: Analyzing trace with hash -667127204, now seen corresponding path program 1 times [2020-10-13 09:01:14,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:14,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802380881] [2020-10-13 09:01:14,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:14,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:14,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:15,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:18,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:18,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 09:01:18,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:01:18,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3974 [2020-10-13 09:01:18,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:01:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:01:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:01:18,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:01:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:18,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:18,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:18,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:18,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:01:18,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:18,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:18,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:18,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:18,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:19,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:19,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:01:19,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:19,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:01:19,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:19,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:19,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:19,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:01:19,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:19,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802380881] [2020-10-13 09:01:19,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:19,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:01:19,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122830266] [2020-10-13 09:01:19,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:01:19,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:19,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:01:19,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:01:19,155 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 8 states. [2020-10-13 09:01:25,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:25,654 INFO L93 Difference]: Finished difference Result 1507 states and 2170 transitions. [2020-10-13 09:01:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:01:25,660 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-10-13 09:01:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:25,667 INFO L225 Difference]: With dead ends: 1507 [2020-10-13 09:01:25,667 INFO L226 Difference]: Without dead ends: 695 [2020-10-13 09:01:25,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:01:25,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-13 09:01:25,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-13 09:01:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:01:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 929 transitions. [2020-10-13 09:01:25,722 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 929 transitions. Word has length 137 [2020-10-13 09:01:25,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:25,723 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 929 transitions. [2020-10-13 09:01:25,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:01:25,723 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 929 transitions. [2020-10-13 09:01:25,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 09:01:25,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:25,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:01:25,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:01:25,727 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:25,728 INFO L82 PathProgramCache]: Analyzing trace with hash 515663971, now seen corresponding path program 1 times [2020-10-13 09:01:25,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:25,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110268546] [2020-10-13 09:01:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:25,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:27,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:27,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 09:01:27,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:01:27,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1307 [2020-10-13 09:01:27,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:27,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:01:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:01:27,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:27,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:27,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:27,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:27,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:01:27,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:27,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:27,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:27,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:01:27,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:27,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:01:27,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:01:27,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:27,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110268546] [2020-10-13 09:01:27,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:27,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:27,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427914198] [2020-10-13 09:01:27,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:27,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:27,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:27,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:27,311 INFO L87 Difference]: Start difference. First operand 691 states and 929 transitions. Second operand 5 states. [2020-10-13 09:01:32,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:32,744 INFO L93 Difference]: Finished difference Result 2012 states and 2721 transitions. [2020-10-13 09:01:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:32,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-13 09:01:32,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:32,753 INFO L225 Difference]: With dead ends: 2012 [2020-10-13 09:01:32,754 INFO L226 Difference]: Without dead ends: 1327 [2020-10-13 09:01:32,756 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 09:01:32,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2020-10-13 09:01:32,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1323. [2020-10-13 09:01:32,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-10-13 09:01:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1725 transitions. [2020-10-13 09:01:32,797 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1725 transitions. Word has length 148 [2020-10-13 09:01:32,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:32,798 INFO L479 AbstractCegarLoop]: Abstraction has 1323 states and 1725 transitions. [2020-10-13 09:01:32,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1725 transitions. [2020-10-13 09:01:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-13 09:01:32,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:32,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:32,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:01:32,804 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:32,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1179297078, now seen corresponding path program 1 times [2020-10-13 09:01:32,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:32,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614104138] [2020-10-13 09:01:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:32,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:34,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:37,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:37,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-13 09:01:37,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:01:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4396 [2020-10-13 09:01:37,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-13 09:01:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:01:37,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:37,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:37,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:37,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:37,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:01:37,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:37,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:37,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:37,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:01:37,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:01:37,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:37,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:37,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:01:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:37,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:37,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:37,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:01:37,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:01:37,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:01:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:01:37,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614104138] [2020-10-13 09:01:37,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:37,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:37,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845036140] [2020-10-13 09:01:37,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:37,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:37,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:37,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:37,607 INFO L87 Difference]: Start difference. First operand 1323 states and 1725 transitions. Second operand 5 states. [2020-10-13 09:01:47,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:47,414 INFO L93 Difference]: Finished difference Result 3578 states and 4772 transitions. [2020-10-13 09:01:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:47,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-13 09:01:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:47,435 INFO L225 Difference]: With dead ends: 3578 [2020-10-13 09:01:47,436 INFO L226 Difference]: Without dead ends: 2261 [2020-10-13 09:01:47,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 09:01:47,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-10-13 09:01:47,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 1950. [2020-10-13 09:01:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-10-13 09:01:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2535 transitions. [2020-10-13 09:01:47,508 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2535 transitions. Word has length 227 [2020-10-13 09:01:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:47,510 INFO L479 AbstractCegarLoop]: Abstraction has 1950 states and 2535 transitions. [2020-10-13 09:01:47,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:47,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2535 transitions. [2020-10-13 09:01:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-13 09:01:47,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:47,515 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:47,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:01:47,516 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:47,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:47,516 INFO L82 PathProgramCache]: Analyzing trace with hash 2119143626, now seen corresponding path program 1 times [2020-10-13 09:01:47,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:47,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855033424] [2020-10-13 09:01:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:47,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:52,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:52,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:52,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-13 09:01:52,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:01:52,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 09:01:52,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:01:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:01:52,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:52,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:52,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:52,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:52,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:01:52,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:52,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:52,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:52,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:52,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:01:52,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:52,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:01:52,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:52,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:52,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:52,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:52,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:52,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:01:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:52,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:52,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:52,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:01:52,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-13 09:01:52,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:01:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:01:53,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855033424] [2020-10-13 09:01:53,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:53,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:53,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444403442] [2020-10-13 09:01:53,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:53,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:53,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:53,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:53,142 INFO L87 Difference]: Start difference. First operand 1950 states and 2535 transitions. Second operand 5 states. [2020-10-13 09:02:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:00,598 INFO L93 Difference]: Finished difference Result 3908 states and 5093 transitions. [2020-10-13 09:02:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:00,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-13 09:02:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:00,618 INFO L225 Difference]: With dead ends: 3908 [2020-10-13 09:02:00,618 INFO L226 Difference]: Without dead ends: 1954 [2020-10-13 09:02:00,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 09:02:00,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-13 09:02:00,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1950. [2020-10-13 09:02:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-10-13 09:02:00,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2533 transitions. [2020-10-13 09:02:00,688 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2533 transitions. Word has length 230 [2020-10-13 09:02:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:00,689 INFO L479 AbstractCegarLoop]: Abstraction has 1950 states and 2533 transitions. [2020-10-13 09:02:00,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:02:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2533 transitions. [2020-10-13 09:02:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-13 09:02:00,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:00,693 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:00,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:02:00,694 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:00,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1504427054, now seen corresponding path program 1 times [2020-10-13 09:02:00,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:00,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183790513] [2020-10-13 09:02:00,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:00,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:02,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:02,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-13 09:02:02,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:02:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-10-13 09:02:02,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:02:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:02:02,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:02,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:02,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:02,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:02,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:02,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:02,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:02:02,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:02,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:02,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:02,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:02,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:02,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:02:02,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:02,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:02:02,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:02:02,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:02,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:02:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:02,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:02,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:02,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:02:02,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 09:02:02,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:02:02,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:02:02,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183790513] [2020-10-13 09:02:02,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:02,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:02:02,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901234092] [2020-10-13 09:02:02,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:02:02,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:02,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:02:02,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:02:02,881 INFO L87 Difference]: Start difference. First operand 1950 states and 2533 transitions. Second operand 8 states. [2020-10-13 09:02:13,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:13,239 INFO L93 Difference]: Finished difference Result 6463 states and 8682 transitions. [2020-10-13 09:02:13,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:02:13,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 231 [2020-10-13 09:02:13,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:13,273 INFO L225 Difference]: With dead ends: 6463 [2020-10-13 09:02:13,273 INFO L226 Difference]: Without dead ends: 4519 [2020-10-13 09:02:13,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:02:13,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2020-10-13 09:02:13,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 4517. [2020-10-13 09:02:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4517 states. [2020-10-13 09:02:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 5511 transitions. [2020-10-13 09:02:13,468 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 5511 transitions. Word has length 231 [2020-10-13 09:02:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:13,469 INFO L479 AbstractCegarLoop]: Abstraction has 4517 states and 5511 transitions. [2020-10-13 09:02:13,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:02:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 5511 transitions. [2020-10-13 09:02:13,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 09:02:13,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:13,476 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:13,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:02:13,476 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:13,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:13,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1883996853, now seen corresponding path program 1 times [2020-10-13 09:02:13,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:13,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336633739] [2020-10-13 09:02:13,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:13,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:13,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:15,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:17,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:17,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 09:02:17,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:02:17,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3787 [2020-10-13 09:02:17,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:02:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:02:17,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:17,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:17,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:17,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:17,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:17,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:17,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:02:17,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:17,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:17,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:17,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:17,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:17,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:17,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:17,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:17,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:02:17,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:17,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:02:17,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:17,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:17,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:02:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:17,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:17,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:17,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:02:17,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:17,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:02:17,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:17,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:17,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:17,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:02:17,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:02:17,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336633739] [2020-10-13 09:02:17,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:17,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:02:17,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154481274] [2020-10-13 09:02:17,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:02:17,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:17,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:02:17,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:02:17,628 INFO L87 Difference]: Start difference. First operand 4517 states and 5511 transitions. Second operand 5 states. [2020-10-13 09:02:22,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:22,526 INFO L93 Difference]: Finished difference Result 9038 states and 11056 transitions. [2020-10-13 09:02:22,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:22,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-13 09:02:22,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:22,554 INFO L225 Difference]: With dead ends: 9038 [2020-10-13 09:02:22,554 INFO L226 Difference]: Without dead ends: 4517 [2020-10-13 09:02:22,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 09:02:22,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2020-10-13 09:02:22,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4517. [2020-10-13 09:02:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4517 states. [2020-10-13 09:02:22,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 5507 transitions. [2020-10-13 09:02:22,718 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 5507 transitions. Word has length 242 [2020-10-13 09:02:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:22,718 INFO L479 AbstractCegarLoop]: Abstraction has 4517 states and 5507 transitions. [2020-10-13 09:02:22,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:02:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 5507 transitions. [2020-10-13 09:02:22,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 09:02:22,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:22,726 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:22,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:02:22,727 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:22,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:22,727 INFO L82 PathProgramCache]: Analyzing trace with hash -752891505, now seen corresponding path program 1 times [2020-10-13 09:02:22,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:22,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751548005] [2020-10-13 09:02:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:22,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:23,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:23,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:26,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:26,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 09:02:26,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:02:26,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3477 [2020-10-13 09:02:26,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:02:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:02:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:02:26,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:26,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:26,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:26,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:26,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:26,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:26,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:02:26,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:26,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:26,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:26,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:26,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:26,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:26,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:26,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:02:26,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:26,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:02:26,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:02:26,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:26,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:02:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:26,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:26,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:26,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:26,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:02:26,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:02:26,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-13 09:02:26,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:26,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:26,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:02:26,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:02:26,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751548005] [2020-10-13 09:02:26,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:26,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:02:26,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369219472] [2020-10-13 09:02:26,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:02:26,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:26,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:02:26,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:02:26,770 INFO L87 Difference]: Start difference. First operand 4517 states and 5507 transitions. Second operand 7 states. [2020-10-13 09:02:36,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:36,589 INFO L93 Difference]: Finished difference Result 10292 states and 14193 transitions. [2020-10-13 09:02:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:02:36,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-13 09:02:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:36,632 INFO L225 Difference]: With dead ends: 10292 [2020-10-13 09:02:36,632 INFO L226 Difference]: Without dead ends: 4816 [2020-10-13 09:02:36,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:02:36,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2020-10-13 09:02:36,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 4544. [2020-10-13 09:02:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4544 states. [2020-10-13 09:02:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 5539 transitions. [2020-10-13 09:02:36,864 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 5539 transitions. Word has length 242 [2020-10-13 09:02:36,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:36,864 INFO L479 AbstractCegarLoop]: Abstraction has 4544 states and 5539 transitions. [2020-10-13 09:02:36,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:02:36,865 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 5539 transitions. [2020-10-13 09:02:36,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-13 09:02:36,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:36,873 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:36,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:02:36,873 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:36,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:36,874 INFO L82 PathProgramCache]: Analyzing trace with hash -2066349161, now seen corresponding path program 1 times [2020-10-13 09:02:36,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:36,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647805385] [2020-10-13 09:02:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:37,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:37,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:40,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:40,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-13 09:02:40,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:02:40,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3685 [2020-10-13 09:02:40,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-13 09:02:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:02:40,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:40,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:40,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:40,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:40,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:40,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:40,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:02:40,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:40,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:40,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:40,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:40,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:40,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:40,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:02:40,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:02:40,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:40,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:02:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:40,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:40,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:40,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:02:40,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:40,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 09:02:40,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:40,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:40,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:40,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 09:02:40,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:02:40,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647805385] [2020-10-13 09:02:40,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:40,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:02:40,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214372657] [2020-10-13 09:02:40,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:02:40,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:40,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:02:40,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:02:40,902 INFO L87 Difference]: Start difference. First operand 4544 states and 5539 transitions. Second operand 5 states. [2020-10-13 09:02:47,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:47,065 INFO L93 Difference]: Finished difference Result 10352 states and 13053 transitions. [2020-10-13 09:02:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:47,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-10-13 09:02:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:47,097 INFO L225 Difference]: With dead ends: 10352 [2020-10-13 09:02:47,097 INFO L226 Difference]: Without dead ends: 5818 [2020-10-13 09:02:47,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:02:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2020-10-13 09:02:47,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 5816. [2020-10-13 09:02:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5816 states. [2020-10-13 09:02:47,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 7345 transitions. [2020-10-13 09:02:47,276 INFO L78 Accepts]: Start accepts. Automaton has 5816 states and 7345 transitions. Word has length 268 [2020-10-13 09:02:47,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:47,277 INFO L479 AbstractCegarLoop]: Abstraction has 5816 states and 7345 transitions. [2020-10-13 09:02:47,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:02:47,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5816 states and 7345 transitions. [2020-10-13 09:02:47,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-13 09:02:47,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:47,287 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:47,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:02:47,288 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:47,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:47,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1713323811, now seen corresponding path program 1 times [2020-10-13 09:02:47,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:47,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255366390] [2020-10-13 09:02:47,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:47,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:47,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:47,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:49,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:49,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:49,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-13 09:02:49,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:02:49,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2000 [2020-10-13 09:02:49,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 09:02:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:02:49,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:49,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:49,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:49,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:49,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:02:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:49,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:49,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 09:02:49,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:49,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:02:49,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 09:02:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:49,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 09:02:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:49,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:49,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:02:49,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:49,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:02:49,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:49,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:49,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:49,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:02:49,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:02:49,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255366390] [2020-10-13 09:02:49,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:49,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:02:49,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207260181] [2020-10-13 09:02:49,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:02:49,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:49,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:02:49,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:02:49,729 INFO L87 Difference]: Start difference. First operand 5816 states and 7345 transitions. Second operand 7 states. [2020-10-13 09:02:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:58,894 INFO L93 Difference]: Finished difference Result 13947 states and 18046 transitions. [2020-10-13 09:02:58,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:02:58,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-13 09:02:58,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:58,936 INFO L225 Difference]: With dead ends: 13947 [2020-10-13 09:02:58,936 INFO L226 Difference]: Without dead ends: 8141 [2020-10-13 09:02:58,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:02:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8141 states. [2020-10-13 09:02:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8141 to 7196. [2020-10-13 09:02:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7196 states. [2020-10-13 09:02:59,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7196 states to 7196 states and 9234 transitions. [2020-10-13 09:02:59,142 INFO L78 Accepts]: Start accepts. Automaton has 7196 states and 9234 transitions. Word has length 277 [2020-10-13 09:02:59,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:59,143 INFO L479 AbstractCegarLoop]: Abstraction has 7196 states and 9234 transitions. [2020-10-13 09:02:59,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:02:59,143 INFO L276 IsEmpty]: Start isEmpty. Operand 7196 states and 9234 transitions. [2020-10-13 09:02:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-13 09:02:59,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:59,155 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:59,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:02:59,156 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:59,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:59,156 INFO L82 PathProgramCache]: Analyzing trace with hash -569080468, now seen corresponding path program 1 times [2020-10-13 09:02:59,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:59,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741387395] [2020-10-13 09:02:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:59,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:59,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:01,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:03,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:03,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-13 09:03:03,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:03:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4198 [2020-10-13 09:03:03,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-13 09:03:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:03:03,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:03,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:03,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:03,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:03,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:03,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:03,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:03:03,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:03,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:03,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:03,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:03,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:03,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 09:03:03,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:03:03,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:03,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:03,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 09:03:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:03,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:03,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:03,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:03:03,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:03,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:03:03,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:03:03,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:03:03,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741387395] [2020-10-13 09:03:03,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:03,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:03,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083009930] [2020-10-13 09:03:03,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:03,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:03,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:03,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:03,809 INFO L87 Difference]: Start difference. First operand 7196 states and 9234 transitions. Second operand 5 states. [2020-10-13 09:03:10,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:10,301 INFO L93 Difference]: Finished difference Result 14440 states and 18628 transitions. [2020-10-13 09:03:10,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:10,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-13 09:03:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:10,331 INFO L225 Difference]: With dead ends: 14440 [2020-10-13 09:03:10,331 INFO L226 Difference]: Without dead ends: 7204 [2020-10-13 09:03:10,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 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 09:03:10,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7204 states. [2020-10-13 09:03:10,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7204 to 7196. [2020-10-13 09:03:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7196 states. [2020-10-13 09:03:10,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7196 states to 7196 states and 9232 transitions. [2020-10-13 09:03:10,542 INFO L78 Accepts]: Start accepts. Automaton has 7196 states and 9232 transitions. Word has length 280 [2020-10-13 09:03:10,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:10,543 INFO L479 AbstractCegarLoop]: Abstraction has 7196 states and 9232 transitions. [2020-10-13 09:03:10,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 7196 states and 9232 transitions. [2020-10-13 09:03:10,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-13 09:03:10,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:10,557 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:10,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:03:10,558 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:10,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:10,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1320242522, now seen corresponding path program 1 times [2020-10-13 09:03:10,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:10,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768686075] [2020-10-13 09:03:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:10,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:10,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:10,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:10,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:11,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:12,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:13,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:15,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:15,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-13 09:03:15,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:03:15,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 09:03:15,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-13 09:03:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:03:15,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:15,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:15,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:15,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:15,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:15,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:15,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:03:15,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:15,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:15,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:15,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:15,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:03:15,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:03:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:03:15,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:15,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 09:03:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:15,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:15,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:15,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:03:15,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:15,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:03:15,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:03:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:03:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-13 09:03:16,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768686075] [2020-10-13 09:03:16,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:03:16,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:03:16,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645338765] [2020-10-13 09:03:16,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:16,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:16,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:16,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:16,081 INFO L87 Difference]: Start difference. First operand 7196 states and 9232 transitions. Second operand 5 states. [2020-10-13 09:03:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:22,385 INFO L93 Difference]: Finished difference Result 14697 states and 19022 transitions. [2020-10-13 09:03:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:22,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2020-10-13 09:03:22,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:22,414 INFO L225 Difference]: With dead ends: 14697 [2020-10-13 09:03:22,414 INFO L226 Difference]: Without dead ends: 7511 [2020-10-13 09:03:22,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:03:22,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7511 states. [2020-10-13 09:03:22,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7511 to 7191. [2020-10-13 09:03:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7191 states. [2020-10-13 09:03:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7191 states to 7191 states and 9234 transitions. [2020-10-13 09:03:22,643 INFO L78 Accepts]: Start accepts. Automaton has 7191 states and 9234 transitions. Word has length 282 [2020-10-13 09:03:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:22,643 INFO L479 AbstractCegarLoop]: Abstraction has 7191 states and 9234 transitions. [2020-10-13 09:03:22,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:22,644 INFO L276 IsEmpty]: Start isEmpty. Operand 7191 states and 9234 transitions. [2020-10-13 09:03:22,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-13 09:03:22,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:22,657 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:03:22,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:03:22,658 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:22,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:22,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1907517791, now seen corresponding path program 1 times [2020-10-13 09:03:22,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:22,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400283179] [2020-10-13 09:03:22,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:22,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:23,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:26,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:26,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 09:03:26,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:03:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3646 [2020-10-13 09:03:26,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-13 09:03:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:03:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:26,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:26,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:26,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:26,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:26,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:26,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:03:26,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:26,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:26,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:26,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:26,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:26,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:26,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:26,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:03:26,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:03:26,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:26,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:03:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:26,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:26,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:26,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 09:03:26,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:26,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:03:26,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:26,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:26,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:26,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:03:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:26,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-13 09:03:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:26,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:26,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:27,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:27,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:03:27,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:03:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 09:03:27,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:03:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:03:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:03:27,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400283179] [2020-10-13 09:03:27,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:27,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:03:27,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130108477] [2020-10-13 09:03:27,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:03:27,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:27,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:03:27,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:03:27,128 INFO L87 Difference]: Start difference. First operand 7191 states and 9234 transitions. Second operand 8 states. [2020-10-13 09:03:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:42,296 INFO L93 Difference]: Finished difference Result 19982 states and 28404 transitions. [2020-10-13 09:03:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:03:42,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 309 [2020-10-13 09:03:42,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:42,393 INFO L225 Difference]: With dead ends: 19982 [2020-10-13 09:03:42,394 INFO L226 Difference]: Without dead ends: 12762 [2020-10-13 09:03:42,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:03:42,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12762 states. [2020-10-13 09:03:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12762 to 12586. [2020-10-13 09:03:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12586 states. [2020-10-13 09:03:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12586 states to 12586 states and 16992 transitions. [2020-10-13 09:03:42,916 INFO L78 Accepts]: Start accepts. Automaton has 12586 states and 16992 transitions. Word has length 309 [2020-10-13 09:03:42,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:42,917 INFO L479 AbstractCegarLoop]: Abstraction has 12586 states and 16992 transitions. [2020-10-13 09:03:42,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:03:42,917 INFO L276 IsEmpty]: Start isEmpty. Operand 12586 states and 16992 transitions. [2020-10-13 09:03:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-13 09:03:42,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:42,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:03:42,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:03:42,939 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:42,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1142272306, now seen corresponding path program 1 times [2020-10-13 09:03:42,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:42,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050629402] [2020-10-13 09:03:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:43,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:43,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:44,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:47,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:48,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:48,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-13 09:03:48,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:03:48,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:03:48,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 270 [2020-10-13 09:03:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:03:48,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:48,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:48,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:48,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:03:48,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:48,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:48,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:48,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:48,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 09:03:48,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:48,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:03:48,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:48,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:48,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 09:03:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:48,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:48,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:48,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 09:03:48,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:48,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:03:48,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 09:03:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-13 09:03:48,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050629402] [2020-10-13 09:03:48,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:48,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:48,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706743157] [2020-10-13 09:03:48,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:48,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:48,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:48,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:48,459 INFO L87 Difference]: Start difference. First operand 12586 states and 16992 transitions. Second operand 5 states. [2020-10-13 09:03:55,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:55,069 INFO L93 Difference]: Finished difference Result 24492 states and 33123 transitions. [2020-10-13 09:03:55,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:55,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-13 09:03:55,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:55,153 INFO L225 Difference]: With dead ends: 24492 [2020-10-13 09:03:55,153 INFO L226 Difference]: Without dead ends: 17243 [2020-10-13 09:03:55,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 09:03:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17243 states. [2020-10-13 09:03:55,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17243 to 11284. [2020-10-13 09:03:55,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11284 states. [2020-10-13 09:03:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 15007 transitions. [2020-10-13 09:03:55,589 INFO L78 Accepts]: Start accepts. Automaton has 11284 states and 15007 transitions. Word has length 328 [2020-10-13 09:03:55,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:55,590 INFO L479 AbstractCegarLoop]: Abstraction has 11284 states and 15007 transitions. [2020-10-13 09:03:55,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:55,590 INFO L276 IsEmpty]: Start isEmpty. Operand 11284 states and 15007 transitions. [2020-10-13 09:03:55,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-13 09:03:55,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:55,608 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:03:55,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:03:55,609 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:55,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:55,609 INFO L82 PathProgramCache]: Analyzing trace with hash -786154365, now seen corresponding path program 1 times [2020-10-13 09:03:55,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:55,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268069022] [2020-10-13 09:03:55,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:55,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:57,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:58,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:58,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-13 09:03:58,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:03:58,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3299 [2020-10-13 09:03:58,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:58,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:58,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 290 [2020-10-13 09:03:58,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:03:58,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:59,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:59,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:59,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:59,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:59,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:59,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:03:59,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:59,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:59,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:59,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:59,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:59,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 09:03:59,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:59,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:03:59,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:59,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:59,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-13 09:03:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:59,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:59,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:03:59,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:59,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:03:59,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:03:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-13 09:03:59,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268069022] [2020-10-13 09:03:59,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:59,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:59,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210350041] [2020-10-13 09:03:59,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:59,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:59,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:59,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:59,342 INFO L87 Difference]: Start difference. First operand 11284 states and 15007 transitions. Second operand 5 states. [2020-10-13 09:04:08,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:08,940 INFO L93 Difference]: Finished difference Result 29189 states and 39113 transitions. [2020-10-13 09:04:08,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:08,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 346 [2020-10-13 09:04:08,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:09,020 INFO L225 Difference]: With dead ends: 29189 [2020-10-13 09:04:09,021 INFO L226 Difference]: Without dead ends: 17915 [2020-10-13 09:04:09,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:04:09,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17915 states. [2020-10-13 09:04:09,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17915 to 17592. [2020-10-13 09:04:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17592 states. [2020-10-13 09:04:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17592 states to 17592 states and 22617 transitions. [2020-10-13 09:04:09,552 INFO L78 Accepts]: Start accepts. Automaton has 17592 states and 22617 transitions. Word has length 346 [2020-10-13 09:04:09,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:09,553 INFO L479 AbstractCegarLoop]: Abstraction has 17592 states and 22617 transitions. [2020-10-13 09:04:09,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:04:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 17592 states and 22617 transitions. [2020-10-13 09:04:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-13 09:04:09,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:09,577 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:09,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:04:09,577 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:09,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:09,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1824561510, now seen corresponding path program 1 times [2020-10-13 09:04:09,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:09,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648747567] [2020-10-13 09:04:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:09,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:09,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:09,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:09,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:10,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:14,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:14,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-13 09:04:14,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:04:14,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:04:14,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 09:04:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:04:14,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:14,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:14,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:14,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:14,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:14,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:04:14,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:14,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:14,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:14,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:14,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:04:14,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:14,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:04:14,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:04:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:04:14,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 09:04:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:14,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:14,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:14,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 09:04:14,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:14,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:04:14,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:14,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:14,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 09:04:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:14,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:04:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:14,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:14,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:14,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:04:14,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:14,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:04:14,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:04:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:14,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 183 proven. 4 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-13 09:04:15,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648747567] [2020-10-13 09:04:15,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:15,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:04:15,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630769660] [2020-10-13 09:04:15,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:04:15,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:15,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:04:15,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:15,031 INFO L87 Difference]: Start difference. First operand 17592 states and 22617 transitions. Second operand 5 states. [2020-10-13 09:04:24,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:24,292 INFO L93 Difference]: Finished difference Result 43024 states and 56666 transitions. [2020-10-13 09:04:24,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:24,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 351 [2020-10-13 09:04:24,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:24,407 INFO L225 Difference]: With dead ends: 43024 [2020-10-13 09:04:24,407 INFO L226 Difference]: Without dead ends: 25442 [2020-10-13 09:04:24,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:04:24,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25442 states. [2020-10-13 09:04:25,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25442 to 23862. [2020-10-13 09:04:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23862 states. [2020-10-13 09:04:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23862 states to 23862 states and 31676 transitions. [2020-10-13 09:04:25,171 INFO L78 Accepts]: Start accepts. Automaton has 23862 states and 31676 transitions. Word has length 351 [2020-10-13 09:04:25,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:25,171 INFO L479 AbstractCegarLoop]: Abstraction has 23862 states and 31676 transitions. [2020-10-13 09:04:25,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:04:25,172 INFO L276 IsEmpty]: Start isEmpty. Operand 23862 states and 31676 transitions. [2020-10-13 09:04:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-13 09:04:25,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:25,194 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:25,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:04:25,194 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:25,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1934491736, now seen corresponding path program 1 times [2020-10-13 09:04:25,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:25,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405697641] [2020-10-13 09:04:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:25,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:30,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:30,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-13 09:04:30,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:04:30,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 09:04:30,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:30,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:30,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-13 09:04:30,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:04:30,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:30,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:30,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:30,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:30,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:04:30,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:30,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:30,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:30,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:30,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:30,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:30,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:30,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:30,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:04:30,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:30,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:04:30,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:30,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:30,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 09:04:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:30,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:30,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:30,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 09:04:30,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:30,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:04:30,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 09:04:30,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:30,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:04:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:30,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:30,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:30,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:04:30,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:30,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:04:30,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:30,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:30,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:30,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:04:30,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:04:30,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405697641] [2020-10-13 09:04:30,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:30,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:04:30,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123050791] [2020-10-13 09:04:30,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:04:30,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:30,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:04:30,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:04:30,758 INFO L87 Difference]: Start difference. First operand 23862 states and 31676 transitions. Second operand 7 states.