/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/Problem16_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:17:39,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:17:39,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:17:40,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:17:40,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:17:40,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:17:40,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:17:40,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:17:40,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:17:40,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:17:40,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:17:40,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:17:40,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:17:40,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:17:40,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:17:40,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:17:40,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:17:40,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:17:40,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:17:40,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:17:40,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:17:40,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:17:40,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:17:40,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:17:40,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:17:40,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:17:40,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:17:40,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:17:40,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:17:40,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:17:40,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:17:40,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:17:40,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:17:40,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:17:40,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:17:40,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:17:40,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:17:40,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:17:40,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:17:40,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:17:40,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:17:40,035 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 09:17:40,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:17:40,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:17:40,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:17:40,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:17:40,061 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:17:40,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:17:40,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:17:40,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:17:40,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:17:40,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:17:40,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:17:40,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:17:40,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:17:40,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:17:40,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:17:40,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:17:40,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:17:40,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:17:40,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:17:40,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:17:40,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:17:40,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:17:40,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:17:40,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:17:40,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:17:40,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:17:40,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:17:40,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:17:40,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:17:40,066 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 09:17:40,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:17:40,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:17:40,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:17:40,363 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:17:40,365 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:17:40,366 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label21.c [2020-10-13 09:17:40,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/730f0de8b/40c9f87cc6ca49b0996728918489caf5/FLAG13ea387fc [2020-10-13 09:17:41,138 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:17:41,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label21.c [2020-10-13 09:17:41,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/730f0de8b/40c9f87cc6ca49b0996728918489caf5/FLAG13ea387fc [2020-10-13 09:17:41,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/730f0de8b/40c9f87cc6ca49b0996728918489caf5 [2020-10-13 09:17:41,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:17:41,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:17:41,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:17:41,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:17:41,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:17:41,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:41" (1/1) ... [2020-10-13 09:17:41,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e979d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:41, skipping insertion in model container [2020-10-13 09:17:41,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:41" (1/1) ... [2020-10-13 09:17:41,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:17:41,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:17:42,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:17:42,366 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:17:42,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:17:42,688 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:17:42,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:42 WrapperNode [2020-10-13 09:17:42,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:17:42,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:17:42,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:17:42,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:17:42,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:42" (1/1) ... [2020-10-13 09:17:42,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:42" (1/1) ... [2020-10-13 09:17:42,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:42" (1/1) ... [2020-10-13 09:17:42,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:42" (1/1) ... [2020-10-13 09:17:42,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:42" (1/1) ... [2020-10-13 09:17:42,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:42" (1/1) ... [2020-10-13 09:17:42,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:42" (1/1) ... [2020-10-13 09:17:42,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:17:42,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:17:42,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:17:42,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:17:42,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:17:42,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:17:42,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:17:42,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:17:42,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:17:42,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:17:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:17:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:17:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:17:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:17:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:17:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:17:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:17:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:17:45,195 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:17:45,196 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:17:45,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:45 BoogieIcfgContainer [2020-10-13 09:17:45,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:17:45,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:17:45,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:17:45,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:17:45,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:17:41" (1/3) ... [2020-10-13 09:17:45,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b49a146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:45, skipping insertion in model container [2020-10-13 09:17:45,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:42" (2/3) ... [2020-10-13 09:17:45,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b49a146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:45, skipping insertion in model container [2020-10-13 09:17:45,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:45" (3/3) ... [2020-10-13 09:17:45,214 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label21.c [2020-10-13 09:17:45,225 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:17:45,234 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:17:45,249 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:17:45,279 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:17:45,279 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:17:45,280 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:17:45,280 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:17:45,280 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:17:45,280 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:17:45,280 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:17:45,280 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:17:45,308 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:17:45,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 09:17:45,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:45,319 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] [2020-10-13 09:17:45,319 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:45,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:45,326 INFO L82 PathProgramCache]: Analyzing trace with hash -782110827, now seen corresponding path program 1 times [2020-10-13 09:17:45,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:45,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586539193] [2020-10-13 09:17:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:45,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:45,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 09:17:45,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:45,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-13 09:17:45,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:17:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:17:45,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 09:17:45,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:17:46,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:46,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:46,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:46,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:46,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:46,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:17:46,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:17:46,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:46,048 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 09:17:46,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586539193] [2020-10-13 09:17:46,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:17:46,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:17:46,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755826393] [2020-10-13 09:17:46,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:17:46,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:46,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:17:46,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:17:46,076 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-13 09:17:49,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:49,600 INFO L93 Difference]: Finished difference Result 1169 states and 2164 transitions. [2020-10-13 09:17:49,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:49,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-13 09:17:49,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:49,625 INFO L225 Difference]: With dead ends: 1169 [2020-10-13 09:17:49,625 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 09:17:49,637 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 09:17:49,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 09:17:49,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 692. [2020-10-13 09:17:49,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-13 09:17:49,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1014 transitions. [2020-10-13 09:17:49,741 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1014 transitions. Word has length 44 [2020-10-13 09:17:49,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:49,742 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 1014 transitions. [2020-10-13 09:17:49,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:17:49,742 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1014 transitions. [2020-10-13 09:17:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 09:17:49,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:49,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:49,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:17:49,754 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:49,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:49,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1790482824, now seen corresponding path program 1 times [2020-10-13 09:17:49,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:49,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106941146] [2020-10-13 09:17:49,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:49,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:50,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:50,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:50,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:17:50,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-13 09:17:50,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:17:50,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:17:50,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:50,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:50,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:50,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:50,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:50,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:17:50,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:50,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:50,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:50,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:50,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:50,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:17:50,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:50,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:17:50,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:17:50,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:17:50,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106941146] [2020-10-13 09:17:50,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:50,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:17:50,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122145385] [2020-10-13 09:17:50,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:17:50,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:50,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:17:50,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:17:50,790 INFO L87 Difference]: Start difference. First operand 692 states and 1014 transitions. Second operand 5 states. [2020-10-13 09:17:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:54,223 INFO L93 Difference]: Finished difference Result 1724 states and 2649 transitions. [2020-10-13 09:17:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:54,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 09:17:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:54,237 INFO L225 Difference]: With dead ends: 1724 [2020-10-13 09:17:54,238 INFO L226 Difference]: Without dead ends: 1038 [2020-10-13 09:17:54,241 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 09:17:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-13 09:17:54,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1034. [2020-10-13 09:17:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-10-13 09:17:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1429 transitions. [2020-10-13 09:17:54,306 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1429 transitions. Word has length 120 [2020-10-13 09:17:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:54,307 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1429 transitions. [2020-10-13 09:17:54,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:17:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1429 transitions. [2020-10-13 09:17:54,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 09:17:54,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:54,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:54,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:17:54,313 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:54,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1478526159, now seen corresponding path program 1 times [2020-10-13 09:17:54,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:54,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609294380] [2020-10-13 09:17:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:56,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:56,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 09:17:56,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1917 [2020-10-13 09:17:56,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 09:17:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:17:56,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:56,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:56,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:56,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:56,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:56,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:56,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:17:56,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:56,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:56,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:56,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:56,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:56,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:17:56,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-13 09:17:56,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:17:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:17:56,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609294380] [2020-10-13 09:17:56,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:56,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:17:56,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381812571] [2020-10-13 09:17:56,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:17:56,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:56,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:17:56,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:17:56,733 INFO L87 Difference]: Start difference. First operand 1034 states and 1429 transitions. Second operand 5 states. [2020-10-13 09:18:00,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:00,315 INFO L93 Difference]: Finished difference Result 3086 states and 4302 transitions. [2020-10-13 09:18:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:00,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-13 09:18:00,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:00,328 INFO L225 Difference]: With dead ends: 3086 [2020-10-13 09:18:00,328 INFO L226 Difference]: Without dead ends: 2058 [2020-10-13 09:18:00,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 09:18:00,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2020-10-13 09:18:00,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2054. [2020-10-13 09:18:00,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2020-10-13 09:18:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2564 transitions. [2020-10-13 09:18:00,386 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2564 transitions. Word has length 173 [2020-10-13 09:18:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:00,387 INFO L479 AbstractCegarLoop]: Abstraction has 2054 states and 2564 transitions. [2020-10-13 09:18:00,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2564 transitions. [2020-10-13 09:18:00,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-13 09:18:00,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:00,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:00,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:18:00,393 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:00,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1154873651, now seen corresponding path program 1 times [2020-10-13 09:18:00,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:00,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823177599] [2020-10-13 09:18:00,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:00,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:01,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:01,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-13 09:18:01,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:18:01,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-13 09:18:01,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:01,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:01,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:18:01,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:18:01,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:01,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:01,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:01,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:01,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:01,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:01,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:01,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:01,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:01,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 09:18:01,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:01,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:18:01,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 09:18:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:18:01,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823177599] [2020-10-13 09:18:01,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:01,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:01,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516263884] [2020-10-13 09:18:01,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:01,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:01,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:01,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:01,856 INFO L87 Difference]: Start difference. First operand 2054 states and 2564 transitions. Second operand 5 states. [2020-10-13 09:18:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:05,201 INFO L93 Difference]: Finished difference Result 4787 states and 6174 transitions. [2020-10-13 09:18:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:05,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-13 09:18:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:05,216 INFO L225 Difference]: With dead ends: 4787 [2020-10-13 09:18:05,216 INFO L226 Difference]: Without dead ends: 2739 [2020-10-13 09:18:05,221 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 09:18:05,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2020-10-13 09:18:05,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2735. [2020-10-13 09:18:05,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2735 states. [2020-10-13 09:18:05,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 3353 transitions. [2020-10-13 09:18:05,296 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 3353 transitions. Word has length 207 [2020-10-13 09:18:05,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:05,297 INFO L479 AbstractCegarLoop]: Abstraction has 2735 states and 3353 transitions. [2020-10-13 09:18:05,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:05,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 3353 transitions. [2020-10-13 09:18:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-13 09:18:05,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:05,303 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:18:05,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:18:05,304 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:05,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:05,304 INFO L82 PathProgramCache]: Analyzing trace with hash 180282007, now seen corresponding path program 1 times [2020-10-13 09:18:05,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:05,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988255882] [2020-10-13 09:18:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:05,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:05,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:09,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:09,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-13 09:18:09,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:18:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4227 [2020-10-13 09:18:09,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-13 09:18:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:18:09,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:09,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:09,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:09,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:09,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:09,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:09,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:09,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:09,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:09,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:09,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:09,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:09,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:09,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:18:09,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:09,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:18:09,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:09,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:09,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:09,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:09,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:18:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:09,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:09,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:09,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:09,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:09,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:18:09,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:09,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:09,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:09,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:18:09,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:18:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 09:18:09,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988255882] [2020-10-13 09:18:09,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:09,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:09,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238661703] [2020-10-13 09:18:09,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:09,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:09,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:09,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:09,929 INFO L87 Difference]: Start difference. First operand 2735 states and 3353 transitions. Second operand 5 states. [2020-10-13 09:18:13,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:13,464 INFO L93 Difference]: Finished difference Result 6830 states and 8549 transitions. [2020-10-13 09:18:13,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:13,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-13 09:18:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:13,484 INFO L225 Difference]: With dead ends: 6830 [2020-10-13 09:18:13,484 INFO L226 Difference]: Without dead ends: 4101 [2020-10-13 09:18:13,492 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 09:18:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2020-10-13 09:18:13,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 3760. [2020-10-13 09:18:13,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3760 states. [2020-10-13 09:18:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 4660 transitions. [2020-10-13 09:18:13,587 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 4660 transitions. Word has length 230 [2020-10-13 09:18:13,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:13,588 INFO L479 AbstractCegarLoop]: Abstraction has 3760 states and 4660 transitions. [2020-10-13 09:18:13,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 4660 transitions. [2020-10-13 09:18:13,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-13 09:18:13,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:13,596 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:18:13,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:18:13,596 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:13,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:13,597 INFO L82 PathProgramCache]: Analyzing trace with hash 592975186, now seen corresponding path program 1 times [2020-10-13 09:18:13,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:13,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321883016] [2020-10-13 09:18:13,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:14,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:18,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:18,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 09:18:18,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:18:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 09:18:18,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:18,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:18,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 272 [2020-10-13 09:18:18,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:18:18,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:18,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:18,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:18,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:18,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:18,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:18,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:18:18,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:18,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:18,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:18,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:18,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:18,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:18:18,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:18,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:18:18,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:18,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:18,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:18,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:18,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:18,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:18:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:18,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:18,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:18,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:18,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:18,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:18:18,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-13 09:18:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:19,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:19,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:18:19,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:19,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:18:19,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:18:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2020-10-13 09:18:19,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321883016] [2020-10-13 09:18:19,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:19,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:18:19,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854814631] [2020-10-13 09:18:19,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:18:19,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:19,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:18:19,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:18:19,208 INFO L87 Difference]: Start difference. First operand 3760 states and 4660 transitions. Second operand 6 states. [2020-10-13 09:18:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:23,728 INFO L93 Difference]: Finished difference Result 8202 states and 10485 transitions. [2020-10-13 09:18:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:18:23,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 302 [2020-10-13 09:18:23,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:23,748 INFO L225 Difference]: With dead ends: 8202 [2020-10-13 09:18:23,749 INFO L226 Difference]: Without dead ends: 4448 [2020-10-13 09:18:23,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:18:23,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2020-10-13 09:18:23,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4444. [2020-10-13 09:18:23,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4444 states. [2020-10-13 09:18:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 5566 transitions. [2020-10-13 09:18:23,869 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 5566 transitions. Word has length 302 [2020-10-13 09:18:23,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:23,870 INFO L479 AbstractCegarLoop]: Abstraction has 4444 states and 5566 transitions. [2020-10-13 09:18:23,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:18:23,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 5566 transitions. [2020-10-13 09:18:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-13 09:18:23,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:23,881 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:18:23,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:18:23,882 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:23,882 INFO L82 PathProgramCache]: Analyzing trace with hash 2015837226, now seen corresponding path program 1 times [2020-10-13 09:18:23,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:23,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190659484] [2020-10-13 09:18:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:23,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:24,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:26,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:28,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-13 09:18:28,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:18:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 09:18:28,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:18:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:18:28,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:29,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:29,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:29,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:29,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:29,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:29,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:18:29,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:29,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:29,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:29,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:29,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:29,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:29,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:18:29,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:29,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:18:29,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:29,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:29,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:18:29,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:29,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:18:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:29,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:29,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:29,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:29,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:29,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:18:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-13 09:18:29,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:29,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:18:29,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:29,829 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-13 09:18:30,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-13 09:18:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:30,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:30,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:30,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:18:30,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:30,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:18:30,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-13 09:18:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 188 proven. 109 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:18:31,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190659484] [2020-10-13 09:18:31,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:31,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:31,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725277263] [2020-10-13 09:18:31,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:31,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:31,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:31,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:31,106 INFO L87 Difference]: Start difference. First operand 4444 states and 5566 transitions. Second operand 7 states. [2020-10-13 09:18:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:35,061 INFO L93 Difference]: Finished difference Result 9038 states and 11388 transitions. [2020-10-13 09:18:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:18:35,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-13 09:18:35,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:35,081 INFO L225 Difference]: With dead ends: 9038 [2020-10-13 09:18:35,081 INFO L226 Difference]: Without dead ends: 4527 [2020-10-13 09:18:35,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:18:35,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2020-10-13 09:18:35,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 4453. [2020-10-13 09:18:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4453 states. [2020-10-13 09:18:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 5420 transitions. [2020-10-13 09:18:35,203 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 5420 transitions. Word has length 354 [2020-10-13 09:18:35,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:35,204 INFO L479 AbstractCegarLoop]: Abstraction has 4453 states and 5420 transitions. [2020-10-13 09:18:35,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 5420 transitions. [2020-10-13 09:18:35,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-13 09:18:35,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:35,215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:18:35,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:18:35,216 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:35,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:35,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1371401153, now seen corresponding path program 1 times [2020-10-13 09:18:35,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:35,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858408510] [2020-10-13 09:18:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:35,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:35,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:35,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:35,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:36,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:36,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:40,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:40,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-13 09:18:40,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:18:40,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 09:18:40,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 339 [2020-10-13 09:18:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:18:40,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:40,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:40,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:40,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:40,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:40,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:18:40,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:40,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:40,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:40,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:40,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:40,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:40,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:40,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:40,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:18:40,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:40,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:18:40,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:40,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:40,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:40,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:40,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:40,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:18:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:40,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:40,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:40,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:40,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:18:40,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:40,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 09:18:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:40,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:40,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:40,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:18:40,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:18:40,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 09:18:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 09:18:40,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858408510] [2020-10-13 09:18:40,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:40,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:40,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107443684] [2020-10-13 09:18:40,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:40,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:40,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:40,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:40,865 INFO L87 Difference]: Start difference. First operand 4453 states and 5420 transitions. Second operand 5 states. [2020-10-13 09:18:43,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:43,329 INFO L93 Difference]: Finished difference Result 8932 states and 10896 transitions. [2020-10-13 09:18:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:43,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 369 [2020-10-13 09:18:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:43,345 INFO L225 Difference]: With dead ends: 8932 [2020-10-13 09:18:43,346 INFO L226 Difference]: Without dead ends: 4459 [2020-10-13 09:18:43,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 09:18:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2020-10-13 09:18:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 4453. [2020-10-13 09:18:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4453 states. [2020-10-13 09:18:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 5418 transitions. [2020-10-13 09:18:43,454 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 5418 transitions. Word has length 369 [2020-10-13 09:18:43,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:43,455 INFO L479 AbstractCegarLoop]: Abstraction has 4453 states and 5418 transitions. [2020-10-13 09:18:43,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:43,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 5418 transitions. [2020-10-13 09:18:43,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-13 09:18:43,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:43,469 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:18:43,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:18:43,469 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:43,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:43,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1078363362, now seen corresponding path program 1 times [2020-10-13 09:18:43,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:43,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926214962] [2020-10-13 09:18:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:43,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:43,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:43,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:44,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:44,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:46,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:48,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:48,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-13 09:18:48,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:18:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 09:18:48,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 388 [2020-10-13 09:18:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:18:48,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:48,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:48,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:48,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:48,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:48,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:48,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:48,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:48,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:48,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:48,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:18:48,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:18:48,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:48,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:18:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:48,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:48,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:48,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:48,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:18:48,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:48,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 09:18:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:48,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:48,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:18:48,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:48,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:18:48,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 09:18:48,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 09:18:49,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926214962] [2020-10-13 09:18:49,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:49,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:49,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125214592] [2020-10-13 09:18:49,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:49,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:49,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:49,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:49,032 INFO L87 Difference]: Start difference. First operand 4453 states and 5418 transitions. Second operand 5 states. [2020-10-13 09:18:51,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:51,393 INFO L93 Difference]: Finished difference Result 8935 states and 10895 transitions. [2020-10-13 09:18:51,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:51,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 418 [2020-10-13 09:18:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:51,408 INFO L225 Difference]: With dead ends: 8935 [2020-10-13 09:18:51,408 INFO L226 Difference]: Without dead ends: 4459 [2020-10-13 09:18:51,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 09:18:51,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2020-10-13 09:18:51,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 4453. [2020-10-13 09:18:51,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4453 states. [2020-10-13 09:18:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 5416 transitions. [2020-10-13 09:18:51,502 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 5416 transitions. Word has length 418 [2020-10-13 09:18:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:51,503 INFO L479 AbstractCegarLoop]: Abstraction has 4453 states and 5416 transitions. [2020-10-13 09:18:51,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 5416 transitions. [2020-10-13 09:18:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-10-13 09:18:51,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:51,515 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:18:51,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:18:51,515 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:51,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1945269374, now seen corresponding path program 1 times [2020-10-13 09:18:51,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:51,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604181689] [2020-10-13 09:18:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:51,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:51,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:54,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:55,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:55,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-13 09:18:56,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:18:56,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 09:18:56,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:56,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 390 [2020-10-13 09:18:56,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:18:56,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:56,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:56,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:18:56,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:56,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:56,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:18:56,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:56,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:18:56,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:56,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:56,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:18:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:56,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:56,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:56,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:18:56,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:56,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:56,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:56,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 09:18:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:56,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:18:56,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:18:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-13 09:18:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 09:18:56,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604181689] [2020-10-13 09:18:56,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:56,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:56,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542419235] [2020-10-13 09:18:56,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:56,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:56,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:56,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:56,999 INFO L87 Difference]: Start difference. First operand 4453 states and 5416 transitions. Second operand 5 states. [2020-10-13 09:18:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:59,118 INFO L93 Difference]: Finished difference Result 8919 states and 10877 transitions. [2020-10-13 09:18:59,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:59,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 420 [2020-10-13 09:18:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:59,145 INFO L225 Difference]: With dead ends: 8919 [2020-10-13 09:18:59,145 INFO L226 Difference]: Without dead ends: 4459 [2020-10-13 09:18:59,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 09:18:59,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2020-10-13 09:18:59,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 4453. [2020-10-13 09:18:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4453 states. [2020-10-13 09:18:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 5412 transitions. [2020-10-13 09:18:59,229 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 5412 transitions. Word has length 420 [2020-10-13 09:18:59,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:59,230 INFO L479 AbstractCegarLoop]: Abstraction has 4453 states and 5412 transitions. [2020-10-13 09:18:59,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 5412 transitions. [2020-10-13 09:18:59,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-13 09:18:59,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:59,244 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:59,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:18:59,244 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:59,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:59,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1915064869, now seen corresponding path program 1 times [2020-10-13 09:18:59,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:59,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212416998] [2020-10-13 09:18:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:59,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:59,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:04,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-13 09:19:04,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 09:19:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:19:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:19:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:04,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:04,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:04,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:04,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:19:04,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:04,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:04,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:04,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:19:04,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:04,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:19:04,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:19:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:04,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:19:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:04,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:04,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:04,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:04,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 09:19:04,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:04,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:04,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 09:19:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:04,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:04,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:19:04,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:19:04,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:19:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:04,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 203 proven. 109 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 09:19:05,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212416998] [2020-10-13 09:19:05,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:05,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:05,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323361239] [2020-10-13 09:19:05,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:05,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:05,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:05,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:05,154 INFO L87 Difference]: Start difference. First operand 4453 states and 5412 transitions. Second operand 7 states. [2020-10-13 09:19:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:08,133 INFO L93 Difference]: Finished difference Result 9134 states and 11482 transitions. [2020-10-13 09:19:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:19:08,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 531 [2020-10-13 09:19:08,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:08,151 INFO L225 Difference]: With dead ends: 9134 [2020-10-13 09:19:08,151 INFO L226 Difference]: Without dead ends: 4606 [2020-10-13 09:19:08,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2020-10-13 09:19:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 4136. [2020-10-13 09:19:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4136 states. [2020-10-13 09:19:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 4950 transitions. [2020-10-13 09:19:08,290 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 4950 transitions. Word has length 531 [2020-10-13 09:19:08,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:08,291 INFO L479 AbstractCegarLoop]: Abstraction has 4136 states and 4950 transitions. [2020-10-13 09:19:08,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:08,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 4950 transitions. [2020-10-13 09:19:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-13 09:19:08,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:08,309 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:08,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:19:08,310 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:08,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:08,310 INFO L82 PathProgramCache]: Analyzing trace with hash -405986174, now seen corresponding path program 1 times [2020-10-13 09:19:08,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:08,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028933251] [2020-10-13 09:19:08,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:08,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:13,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:13,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-13 09:19:13,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:19:13,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:19:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:19:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:13,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:13,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:13,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:13,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:13,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:13,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:13,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:13,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:13,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:13,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:13,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:13,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:19:13,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:19:13,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:19:13,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 09:19:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:13,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:13,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:13,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:13,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:19:13,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:13,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:13,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:13,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:13,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:13,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-13 09:19:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:13,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:13,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:13,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:19:13,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:19:13,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:19:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 206 proven. 109 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 09:19:14,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028933251] [2020-10-13 09:19:14,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:14,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:19:14,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698991603] [2020-10-13 09:19:14,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:19:14,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:14,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:19:14,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:19:14,227 INFO L87 Difference]: Start difference. First operand 4136 states and 4950 transitions. Second operand 6 states. [2020-10-13 09:19:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:17,097 INFO L93 Difference]: Finished difference Result 8398 states and 10069 transitions. [2020-10-13 09:19:17,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:19:17,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 534 [2020-10-13 09:19:17,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:17,109 INFO L225 Difference]: With dead ends: 8398 [2020-10-13 09:19:17,109 INFO L226 Difference]: Without dead ends: 4195 [2020-10-13 09:19:17,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:19:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2020-10-13 09:19:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 4131. [2020-10-13 09:19:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4131 states. [2020-10-13 09:19:17,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4131 states to 4131 states and 4660 transitions. [2020-10-13 09:19:17,188 INFO L78 Accepts]: Start accepts. Automaton has 4131 states and 4660 transitions. Word has length 534 [2020-10-13 09:19:17,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:17,189 INFO L479 AbstractCegarLoop]: Abstraction has 4131 states and 4660 transitions. [2020-10-13 09:19:17,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:19:17,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4131 states and 4660 transitions. [2020-10-13 09:19:17,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2020-10-13 09:19:17,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:17,204 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:17,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:19:17,204 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:17,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:17,205 INFO L82 PathProgramCache]: Analyzing trace with hash 685881187, now seen corresponding path program 1 times [2020-10-13 09:19:17,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:17,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042350266] [2020-10-13 09:19:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:17,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:17,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:17,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:18,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:22,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:22,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 637 [2020-10-13 09:19:22,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 09:19:22,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:22,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:19:22,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:19:22,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:19:22,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:22,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:22,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:22,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:22,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:22,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:22,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:22,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:22,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:22,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:22,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:22,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:22,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:22,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:22,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 09:19:22,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:22,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:19:22,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 09:19:22,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:22,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-13 09:19:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:22,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:22,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:22,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:22,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-13 09:19:22,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:22,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-13 09:19:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:22,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:23,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:23,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:19:23,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:23,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:19:23,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:23,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:23,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:19:23,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:23,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 222 proven. 109 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-13 09:19:23,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042350266] [2020-10-13 09:19:23,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:23,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:23,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227546958] [2020-10-13 09:19:23,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:23,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:23,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:23,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:23,255 INFO L87 Difference]: Start difference. First operand 4131 states and 4660 transitions. Second operand 7 states. [2020-10-13 09:19:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:26,420 INFO L93 Difference]: Finished difference Result 8626 states and 9762 transitions. [2020-10-13 09:19:26,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:19:26,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 623 [2020-10-13 09:19:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:26,438 INFO L225 Difference]: With dead ends: 8626 [2020-10-13 09:19:26,439 INFO L226 Difference]: Without dead ends: 4148 [2020-10-13 09:19:26,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2020-10-13 09:19:26,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4122. [2020-10-13 09:19:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4122 states. [2020-10-13 09:19:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 4571 transitions. [2020-10-13 09:19:26,518 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 4571 transitions. Word has length 623 [2020-10-13 09:19:26,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:26,518 INFO L479 AbstractCegarLoop]: Abstraction has 4122 states and 4571 transitions. [2020-10-13 09:19:26,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 4571 transitions. [2020-10-13 09:19:26,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2020-10-13 09:19:26,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:26,535 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:26,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:19:26,535 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:26,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:26,536 INFO L82 PathProgramCache]: Analyzing trace with hash -788061450, now seen corresponding path program 1 times [2020-10-13 09:19:26,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:26,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502033682] [2020-10-13 09:19:26,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:26,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:30,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:30,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:31,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:31,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 763 [2020-10-13 09:19:31,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:19:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 09:19:31,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:31,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:31,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 719 [2020-10-13 09:19:31,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:19:31,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:31,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:31,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:31,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:31,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:31,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:31,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:31,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:31,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:31,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:31,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:31,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:31,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:31,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 09:19:31,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:19:31,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:31,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:31,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 09:19:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:31,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:31,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:19:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:19:31,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:31,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 09:19:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:31,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:31,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:31,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:31,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:31,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:19:31,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:31,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:31,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 09:19:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:31,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:32,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:32,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:19:32,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:32,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 09:19:32,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:32,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-13 09:19:32,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 153 proven. 4 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2020-10-13 09:19:32,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502033682] [2020-10-13 09:19:32,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:32,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:19:32,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621341589] [2020-10-13 09:19:32,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:19:32,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:32,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:19:32,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:19:32,389 INFO L87 Difference]: Start difference. First operand 4122 states and 4571 transitions. Second operand 5 states. [2020-10-13 09:19:34,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:34,091 INFO L93 Difference]: Finished difference Result 8266 states and 9194 transitions. [2020-10-13 09:19:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:19:34,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 747 [2020-10-13 09:19:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:34,108 INFO L225 Difference]: With dead ends: 8266 [2020-10-13 09:19:34,108 INFO L226 Difference]: Without dead ends: 4128 [2020-10-13 09:19:34,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 09:19:34,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2020-10-13 09:19:34,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 4122. [2020-10-13 09:19:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4122 states. [2020-10-13 09:19:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 4569 transitions. [2020-10-13 09:19:34,178 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 4569 transitions. Word has length 747 [2020-10-13 09:19:34,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:34,179 INFO L479 AbstractCegarLoop]: Abstraction has 4122 states and 4569 transitions. [2020-10-13 09:19:34,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:19:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 4569 transitions. [2020-10-13 09:19:34,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2020-10-13 09:19:34,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:34,199 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:34,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:19:34,199 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:34,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:34,200 INFO L82 PathProgramCache]: Analyzing trace with hash -82576933, now seen corresponding path program 1 times [2020-10-13 09:19:34,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:34,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487130970] [2020-10-13 09:19:34,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:34,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:34,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:35,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:39,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:39,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 778 [2020-10-13 09:19:39,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:39,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 09:19:39,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 319 [2020-10-13 09:19:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:19:39,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:39,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:39,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:39,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:39,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:39,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:39,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:39,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:39,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:39,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:39,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 09:19:39,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:19:39,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:39,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 09:19:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:39,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:39,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:19:39,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:19:39,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 09:19:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 09:19:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:39,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:39,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:39,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:39,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:19:39,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:39,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 09:19:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:39,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:39,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:19:39,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:19:39,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:19:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:39,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:39,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:39,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:39,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:19:39,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:19:39,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:39,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 375 proven. 109 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2020-10-13 09:19:40,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487130970] [2020-10-13 09:19:40,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:40,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:19:40,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43972308] [2020-10-13 09:19:40,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:19:40,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:40,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:19:40,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:19:40,348 INFO L87 Difference]: Start difference. First operand 4122 states and 4569 transitions. Second operand 8 states. [2020-10-13 09:19:45,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:45,882 INFO L93 Difference]: Finished difference Result 10051 states and 11536 transitions. [2020-10-13 09:19:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:19:45,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 760 [2020-10-13 09:19:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:45,908 INFO L225 Difference]: With dead ends: 10051 [2020-10-13 09:19:45,909 INFO L226 Difference]: Without dead ends: 5935 [2020-10-13 09:19:45,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:19:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5935 states. [2020-10-13 09:19:46,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5935 to 5859. [2020-10-13 09:19:46,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5859 states. [2020-10-13 09:19:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 6477 transitions. [2020-10-13 09:19:46,019 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 6477 transitions. Word has length 760 [2020-10-13 09:19:46,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:46,020 INFO L479 AbstractCegarLoop]: Abstraction has 5859 states and 6477 transitions. [2020-10-13 09:19:46,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:19:46,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 6477 transitions. [2020-10-13 09:19:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2020-10-13 09:19:46,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:46,035 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:46,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:19:46,035 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:46,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:46,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1238967806, now seen corresponding path program 1 times [2020-10-13 09:19:46,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:46,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103577588] [2020-10-13 09:19:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:46,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:46,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:51,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:51,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 795 [2020-10-13 09:19:51,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:19:51,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 09:19:51,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 336 [2020-10-13 09:19:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:19:51,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:51,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:51,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:51,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:51,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:51,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:51,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:51,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:51,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:51,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:51,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:19:51,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:19:51,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 09:19:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:51,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:51,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:51,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:19:51,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:51,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-13 09:19:51,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:51,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:51,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:51,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-13 09:19:51,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:51,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-10-13 09:19:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:51,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:51,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:51,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:51,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:51,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:19:51,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:51,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:51,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-13 09:19:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:51,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:51,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:51,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:19:51,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:19:51,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:19:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:51,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:51,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:51,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:51,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:19:51,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:51,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:19:51,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:51,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 375 proven. 109 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2020-10-13 09:19:52,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103577588] [2020-10-13 09:19:52,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:52,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:52,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099189647] [2020-10-13 09:19:52,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:52,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:52,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:52,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:52,080 INFO L87 Difference]: Start difference. First operand 5859 states and 6477 transitions. Second operand 7 states. [2020-10-13 09:19:55,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:55,018 INFO L93 Difference]: Finished difference Result 14813 states and 16712 transitions. [2020-10-13 09:19:55,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:19:55,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 777 [2020-10-13 09:19:55,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:55,043 INFO L225 Difference]: With dead ends: 14813 [2020-10-13 09:19:55,044 INFO L226 Difference]: Without dead ends: 8960 [2020-10-13 09:19:55,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 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 09:19:55,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8960 states. [2020-10-13 09:19:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8960 to 8942. [2020-10-13 09:19:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8942 states. [2020-10-13 09:19:55,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8942 states to 8942 states and 9872 transitions. [2020-10-13 09:19:55,257 INFO L78 Accepts]: Start accepts. Automaton has 8942 states and 9872 transitions. Word has length 777 [2020-10-13 09:19:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:55,258 INFO L479 AbstractCegarLoop]: Abstraction has 8942 states and 9872 transitions. [2020-10-13 09:19:55,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:55,258 INFO L276 IsEmpty]: Start isEmpty. Operand 8942 states and 9872 transitions. [2020-10-13 09:19:55,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1061 [2020-10-13 09:19:55,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:55,297 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:19:55,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:19:55,297 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:55,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:55,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1640987299, now seen corresponding path program 1 times [2020-10-13 09:19:55,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:55,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049433889] [2020-10-13 09:19:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:55,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:55,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:55,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:56,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:56,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:00,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:00,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1078 [2020-10-13 09:20:00,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:00,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 09:20:00,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:20:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-13 09:20:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:00,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:00,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:00,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:00,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:00,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:00,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:00,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:00,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:00,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:00,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:00,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:00,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:00,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:20:00,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:00,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:20:00,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:20:00,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:00,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:20:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:00,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:01,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:01,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:20:01,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:01,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 09:20:01,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-13 09:20:01,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:01,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:20:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:01,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:01,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:01,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:20:01,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:20:01,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:20:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:01,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-13 09:20:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:01,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:01,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:01,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:20:01,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:20:01,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:20:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:01,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:01,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:01,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:01,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:20:01,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:01,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:20:01,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:01,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:01,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:01,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:01,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 348 proven. 386 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2020-10-13 09:20:02,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049433889] [2020-10-13 09:20:02,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:02,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:02,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184987496] [2020-10-13 09:20:02,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:02,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:02,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:02,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:02,061 INFO L87 Difference]: Start difference. First operand 8942 states and 9872 transitions. Second operand 7 states. [2020-10-13 09:20:07,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:07,018 INFO L93 Difference]: Finished difference Result 23490 states and 26700 transitions. [2020-10-13 09:20:07,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:20:07,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1060 [2020-10-13 09:20:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:07,056 INFO L225 Difference]: With dead ends: 23490 [2020-10-13 09:20:07,057 INFO L226 Difference]: Without dead ends: 14554 [2020-10-13 09:20:07,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:20:07,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14554 states. [2020-10-13 09:20:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14554 to 13714. [2020-10-13 09:20:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13714 states. [2020-10-13 09:20:07,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13714 states to 13714 states and 15075 transitions. [2020-10-13 09:20:07,298 INFO L78 Accepts]: Start accepts. Automaton has 13714 states and 15075 transitions. Word has length 1060 [2020-10-13 09:20:07,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:07,299 INFO L479 AbstractCegarLoop]: Abstraction has 13714 states and 15075 transitions. [2020-10-13 09:20:07,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 13714 states and 15075 transitions. [2020-10-13 09:20:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2020-10-13 09:20:07,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:07,321 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:20:07,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:20:07,321 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:07,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1228450743, now seen corresponding path program 1 times [2020-10-13 09:20:07,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:07,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199245571] [2020-10-13 09:20:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:07,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:07,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:07,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:08,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:12,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:12,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1088 [2020-10-13 09:20:12,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:12,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 09:20:12,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:20:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:20:12,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:12,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:12,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:12,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:12,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:12,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:20:12,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:12,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:12,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:12,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:12,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:12,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:20:12,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:12,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 09:20:12,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:20:12,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:12,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:20:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:12,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:13,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:13,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:20:13,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:20:13,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:20:13,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:13,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-13 09:20:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:13,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:13,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-13 09:20:13,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:13,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:20:13,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:13,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:13,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-13 09:20:13,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:13,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:13,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2020-10-13 09:20:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:13,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:13,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:13,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:13,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:20:13,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:13,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2020-10-13 09:20:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:13,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:13,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:13,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:20:13,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:13,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:20:13,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:20:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:13,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:13,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:13,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:13,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:20:13,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:13,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:20:13,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:13,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:13,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:13,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:13,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 263 proven. 200 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2020-10-13 09:20:14,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199245571] [2020-10-13 09:20:14,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:14,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:20:14,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046662099] [2020-10-13 09:20:14,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:20:14,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:14,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:20:14,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:20:14,004 INFO L87 Difference]: Start difference. First operand 13714 states and 15075 transitions. Second operand 8 states. [2020-10-13 09:20:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:18,746 INFO L93 Difference]: Finished difference Result 32826 states and 36455 transitions. [2020-10-13 09:20:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:20:18,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1068 [2020-10-13 09:20:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:18,789 INFO L225 Difference]: With dead ends: 32826 [2020-10-13 09:20:18,789 INFO L226 Difference]: Without dead ends: 19806 [2020-10-13 09:20:18,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:20:18,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19806 states. [2020-10-13 09:20:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19806 to 19128. [2020-10-13 09:20:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19128 states. [2020-10-13 09:20:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19128 states to 19128 states and 21099 transitions. [2020-10-13 09:20:19,136 INFO L78 Accepts]: Start accepts. Automaton has 19128 states and 21099 transitions. Word has length 1068 [2020-10-13 09:20:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:19,137 INFO L479 AbstractCegarLoop]: Abstraction has 19128 states and 21099 transitions. [2020-10-13 09:20:19,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:20:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 19128 states and 21099 transitions. [2020-10-13 09:20:19,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1177 [2020-10-13 09:20:19,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:19,174 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:19,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:20:19,175 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:19,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:19,175 INFO L82 PathProgramCache]: Analyzing trace with hash -2044987410, now seen corresponding path program 1 times [2020-10-13 09:20:19,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:19,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077567863] [2020-10-13 09:20:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:24,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:24,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1194 [2020-10-13 09:20:24,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:20:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 09:20:24,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 09:20:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:20:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-13 09:20:24,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:24,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:24,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:24,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:24,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:24,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:24,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:20:24,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:20:24,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:24,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:24,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:25,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:25,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:20:25,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:20:25,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-13 09:20:25,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:20:25,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:25,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:20:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:25,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:25,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:20:25,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:25,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:20:25,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:25,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:20:25,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:25,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:25,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:20:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:25,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:25,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:20:25,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:25,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:20:25,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:20:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:25,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 806 [2020-10-13 09:20:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:25,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:25,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:25,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:20:25,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:20:25,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:20:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:26,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:26,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:26,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:26,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:20:26,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:26,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:20:26,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:26,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:26,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:26,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 148 proven. 732 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2020-10-13 09:20:27,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077567863] [2020-10-13 09:20:27,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:27,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:20:27,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861094288] [2020-10-13 09:20:27,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:20:27,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:27,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:20:27,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:20:27,017 INFO L87 Difference]: Start difference. First operand 19128 states and 21099 transitions. Second operand 8 states. [2020-10-13 09:20:30,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:30,758 INFO L93 Difference]: Finished difference Result 37781 states and 42665 transitions. [2020-10-13 09:20:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:20:30,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1176 [2020-10-13 09:20:30,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:30,794 INFO L225 Difference]: With dead ends: 37781 [2020-10-13 09:20:30,794 INFO L226 Difference]: Without dead ends: 19351 [2020-10-13 09:20:30,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:20:30,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19351 states. [2020-10-13 09:20:31,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19351 to 19132. [2020-10-13 09:20:31,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19132 states. [2020-10-13 09:20:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19132 states to 19132 states and 21110 transitions. [2020-10-13 09:20:31,132 INFO L78 Accepts]: Start accepts. Automaton has 19132 states and 21110 transitions. Word has length 1176 [2020-10-13 09:20:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:31,133 INFO L479 AbstractCegarLoop]: Abstraction has 19132 states and 21110 transitions. [2020-10-13 09:20:31,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:20:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand 19132 states and 21110 transitions. [2020-10-13 09:20:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1377 [2020-10-13 09:20:31,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:31,160 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:31,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:20:31,161 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:31,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:31,161 INFO L82 PathProgramCache]: Analyzing trace with hash 968817946, now seen corresponding path program 1 times [2020-10-13 09:20:31,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:31,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842727943] [2020-10-13 09:20:31,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:31,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:31,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:35,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:36,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:36,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1398 [2020-10-13 09:20:36,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:20:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-13 09:20:36,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1351 [2020-10-13 09:20:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 09:20:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:36,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:36,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:36,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:36,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:36,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:36,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:36,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:36,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:36,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:36,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:36,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:36,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:20:36,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:20:36,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:36,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:36,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:36,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:36,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:37,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:20:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:37,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:37,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:20:37,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:37,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:20:37,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:37,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:37,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:20:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:37,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:20:38,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:20:38,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:38,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:20:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:20:38,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:20:38,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:38,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:38,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:20:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:20:38,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:20:38,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:38,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:38,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:38,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:20:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:20:38,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 09:20:38,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 328 [2020-10-13 09:20:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:20:38,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:20:38,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:20:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2851 backedges. 231 proven. 6 refuted. 0 times theorem prover too weak. 2614 trivial. 0 not checked. [2020-10-13 09:20:39,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842727943] [2020-10-13 09:20:39,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:39,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:20:39,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495839009] [2020-10-13 09:20:39,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:20:39,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:39,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:20:39,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:20:39,394 INFO L87 Difference]: Start difference. First operand 19132 states and 21110 transitions. Second operand 5 states. [2020-10-13 09:20:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:42,354 INFO L93 Difference]: Finished difference Result 38914 states and 42931 transitions. [2020-10-13 09:20:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:20:42,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1376 [2020-10-13 09:20:42,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:42,398 INFO L225 Difference]: With dead ends: 38914 [2020-10-13 09:20:42,398 INFO L226 Difference]: Without dead ends: 20480 [2020-10-13 09:20:42,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 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 09:20:42,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20480 states. [2020-10-13 09:20:42,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20480 to 20480. [2020-10-13 09:20:42,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20480 states. [2020-10-13 09:20:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20480 states to 20480 states and 22439 transitions. [2020-10-13 09:20:42,666 INFO L78 Accepts]: Start accepts. Automaton has 20480 states and 22439 transitions. Word has length 1376 [2020-10-13 09:20:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:42,667 INFO L479 AbstractCegarLoop]: Abstraction has 20480 states and 22439 transitions. [2020-10-13 09:20:42,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:20:42,667 INFO L276 IsEmpty]: Start isEmpty. Operand 20480 states and 22439 transitions. [2020-10-13 09:20:42,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1512 [2020-10-13 09:20:42,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:42,695 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:42,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:20:42,695 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:42,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:42,696 INFO L82 PathProgramCache]: Analyzing trace with hash 314669373, now seen corresponding path program 1 times [2020-10-13 09:20:42,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:42,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617483894] [2020-10-13 09:20:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:43,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:43,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:44,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:48,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:48,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1535 [2020-10-13 09:20:48,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:20:48,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-13 09:20:48,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:48,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1188 [2020-10-13 09:20:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:20:48,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:48,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:48,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:48,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:48,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:48,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:48,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:20:48,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:48,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:48,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:48,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:48,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:48,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:20:48,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:48,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:20:48,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:48,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:48,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:48,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:20:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:48,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:48,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:48,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:20:48,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:48,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:20:48,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:48,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:48,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:20:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:48,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:48,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:20:48,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:48,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:20:48,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:48,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:48,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:20:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:48,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:48,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:20:48,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:48,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:20:48,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:48,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:48,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:20:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:48,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:48,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:20:48,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:20:48,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:20:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:48,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:48,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:48,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:20:48,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:20:48,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:20:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:48,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1176 [2020-10-13 09:20:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:48,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:49,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:49,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:20:49,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:20:49,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-13 09:20:49,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:49,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:49,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:49,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-13 09:20:49,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:49,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:49,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:49,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:49,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:20:49,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:49,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:20:49,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:49,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:49,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:49,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 09:20:49,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3859 backedges. 1434 proven. 2 refuted. 0 times theorem prover too weak. 2423 trivial. 0 not checked. [2020-10-13 09:20:52,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617483894] [2020-10-13 09:20:52,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:52,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:52,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632032191] [2020-10-13 09:20:52,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:52,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:52,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:52,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:52,732 INFO L87 Difference]: Start difference. First operand 20480 states and 22439 transitions. Second operand 7 states. [2020-10-13 09:20:55,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:55,191 INFO L93 Difference]: Finished difference Result 39960 states and 43831 transitions. [2020-10-13 09:20:55,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:20:55,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1511 [2020-10-13 09:20:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:55,222 INFO L225 Difference]: With dead ends: 39960 [2020-10-13 09:20:55,222 INFO L226 Difference]: Without dead ends: 20160 [2020-10-13 09:20:55,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:20:55,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20160 states. [2020-10-13 09:20:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20160 to 20141. [2020-10-13 09:20:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20141 states. [2020-10-13 09:20:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20141 states to 20141 states and 22008 transitions. [2020-10-13 09:20:55,478 INFO L78 Accepts]: Start accepts. Automaton has 20141 states and 22008 transitions. Word has length 1511 [2020-10-13 09:20:55,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:55,479 INFO L479 AbstractCegarLoop]: Abstraction has 20141 states and 22008 transitions. [2020-10-13 09:20:55,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:55,479 INFO L276 IsEmpty]: Start isEmpty. Operand 20141 states and 22008 transitions. [2020-10-13 09:20:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1557 [2020-10-13 09:20:55,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:55,515 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:20:55,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 09:20:55,516 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:55,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:55,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1457137590, now seen corresponding path program 1 times [2020-10-13 09:20:55,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:55,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732067269] [2020-10-13 09:20:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:55,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:56,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:56,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:00,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:00,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1580 [2020-10-13 09:21:00,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:21:00,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-13 09:21:00,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:00,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:00,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:21:00,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:21:00,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:00,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:00,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:00,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:00,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:00,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:00,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:00,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:00,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:00,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:00,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:00,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:00,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:21:00,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 09:21:00,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:21:00,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:01,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:21:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:01,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:21:01,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:21:01,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:21:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:01,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:21:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:01,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:21:01,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:21:01,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:21:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:01,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:21:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:21:01,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:21:01,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:21:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:01,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:01,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:21:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:01,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:21:01,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:21:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:01,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:01,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:21:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:01,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:21:01,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:21:01,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:21:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:01,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:01,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1221 [2020-10-13 09:21:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:01,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:21:01,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:21:01,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:01,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:21:01,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:01,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:01,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:21:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:01,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:21:01,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:21:01,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:01,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4019 backedges. 438 proven. 764 refuted. 0 times theorem prover too weak. 2817 trivial. 0 not checked. [2020-10-13 09:21:03,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732067269] [2020-10-13 09:21:03,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:03,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:03,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085272320] [2020-10-13 09:21:03,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:03,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:03,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:03,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:03,593 INFO L87 Difference]: Start difference. First operand 20141 states and 22008 transitions. Second operand 7 states. [2020-10-13 09:21:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:07,087 INFO L93 Difference]: Finished difference Result 40938 states and 44828 transitions. [2020-10-13 09:21:07,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:21:07,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1556 [2020-10-13 09:21:07,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:07,120 INFO L225 Difference]: With dead ends: 40938 [2020-10-13 09:21:07,120 INFO L226 Difference]: Without dead ends: 21481 [2020-10-13 09:21:07,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:21:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21481 states. [2020-10-13 09:21:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21481 to 21479. [2020-10-13 09:21:07,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21479 states. [2020-10-13 09:21:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21479 states to 21479 states and 23316 transitions. [2020-10-13 09:21:07,413 INFO L78 Accepts]: Start accepts. Automaton has 21479 states and 23316 transitions. Word has length 1556 [2020-10-13 09:21:07,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:07,414 INFO L479 AbstractCegarLoop]: Abstraction has 21479 states and 23316 transitions. [2020-10-13 09:21:07,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:07,414 INFO L276 IsEmpty]: Start isEmpty. Operand 21479 states and 23316 transitions. [2020-10-13 09:21:07,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1630 [2020-10-13 09:21:07,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:07,457 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:07,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 09:21:07,457 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:07,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:07,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1104350190, now seen corresponding path program 1 times [2020-10-13 09:21:07,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:07,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70601715] [2020-10-13 09:21:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:08,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:12,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:12,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1651 [2020-10-13 09:21:12,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:21:12,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 09:21:12,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:21:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-13 09:21:12,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:12,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:12,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:12,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:12,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:12,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:21:12,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:12,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:12,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:12,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:12,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:12,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:21:12,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:12,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 09:21:12,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:12,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:12,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:12,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-13 09:21:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:21:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:13,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:13,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:13,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:21:13,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:13,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-13 09:21:13,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:13,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:13,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:21:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:13,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:21:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:13,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:13,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:13,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:21:13,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:13,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:21:13,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:21:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:13,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:13,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:21:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:13,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:13,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:13,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:13,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:21:13,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:21:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:13,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-13 09:21:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:13,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:13,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:13,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-13 09:21:13,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:13,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:21:13,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-13 09:21:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:13,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:13,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1294 [2020-10-13 09:21:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:14,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:14,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:21:14,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:21:14,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:21:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:14,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:21:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:14,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:14,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:21:14,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:14,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:21:14,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:14,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3984 backedges. 482 proven. 978 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2020-10-13 09:21:16,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70601715] [2020-10-13 09:21:16,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:16,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:16,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836635054] [2020-10-13 09:21:16,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:16,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:16,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:16,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:16,008 INFO L87 Difference]: Start difference. First operand 21479 states and 23316 transitions. Second operand 7 states. [2020-10-13 09:21:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:19,872 INFO L93 Difference]: Finished difference Result 42274 states and 45938 transitions. [2020-10-13 09:21:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:21:19,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1629 [2020-10-13 09:21:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:19,907 INFO L225 Difference]: With dead ends: 42274 [2020-10-13 09:21:19,907 INFO L226 Difference]: Without dead ends: 21479 [2020-10-13 09:21:19,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:21:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21479 states. [2020-10-13 09:21:20,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21479 to 21479. [2020-10-13 09:21:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21479 states. [2020-10-13 09:21:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21479 states to 21479 states and 23314 transitions. [2020-10-13 09:21:20,212 INFO L78 Accepts]: Start accepts. Automaton has 21479 states and 23314 transitions. Word has length 1629 [2020-10-13 09:21:20,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:20,213 INFO L479 AbstractCegarLoop]: Abstraction has 21479 states and 23314 transitions. [2020-10-13 09:21:20,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:20,213 INFO L276 IsEmpty]: Start isEmpty. Operand 21479 states and 23314 transitions. [2020-10-13 09:21:20,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1644 [2020-10-13 09:21:20,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:20,261 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:20,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 09:21:20,261 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:20,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:20,262 INFO L82 PathProgramCache]: Analyzing trace with hash 541805265, now seen corresponding path program 1 times [2020-10-13 09:21:20,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:20,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884100833] [2020-10-13 09:21:20,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking...