/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/Problem12_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:25:33,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:25:33,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:25:33,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:25:33,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:25:33,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:25:33,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:25:33,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:25:33,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:25:33,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:25:33,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:25:33,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:25:33,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:25:33,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:25:33,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:25:33,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:25:33,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:25:33,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:25:33,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:25:33,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:25:33,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:25:33,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:25:33,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:25:33,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:25:33,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:25:33,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:25:33,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:25:33,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:25:33,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:25:33,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:25:33,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:25:33,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:25:33,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:25:33,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:25:33,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:25:33,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:25:33,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:25:33,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:25:33,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:25:33,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:25:33,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:25:33,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:25:33,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:25:33,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:25:33,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:25:33,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:25:33,104 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:25:33,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:25:33,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:25:33,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:25:33,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:25:33,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:25:33,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:25:33,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:25:33,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:25:33,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:25:33,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:25:33,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:25:33,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:25:33,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:25:33,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:25:33,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:25:33,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:25:33,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:25:33,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:25:33,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:25:33,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:25:33,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:25:33,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:25:33,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:25:33,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:25:33,109 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 08:25:33,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:25:33,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:25:33,440 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:25:33,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:25:33,442 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:25:33,442 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48.c [2020-10-13 08:25:33,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc59219c4/01b2a1e09af0447a853fb4bfb4893b52/FLAG1c996b932 [2020-10-13 08:25:34,226 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:25:34,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label48.c [2020-10-13 08:25:34,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc59219c4/01b2a1e09af0447a853fb4bfb4893b52/FLAG1c996b932 [2020-10-13 08:25:34,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc59219c4/01b2a1e09af0447a853fb4bfb4893b52 [2020-10-13 08:25:34,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:25:34,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:25:34,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:25:34,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:25:34,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:25:34,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:25:34" (1/1) ... [2020-10-13 08:25:34,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee0cdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:34, skipping insertion in model container [2020-10-13 08:25:34,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:25:34" (1/1) ... [2020-10-13 08:25:34,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:25:34,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:25:36,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:25:36,369 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:25:37,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:25:37,043 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:25:37,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:37 WrapperNode [2020-10-13 08:25:37,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:25:37,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:25:37,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:25:37,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:25:37,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:37" (1/1) ... [2020-10-13 08:25:37,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:37" (1/1) ... [2020-10-13 08:25:37,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:37" (1/1) ... [2020-10-13 08:25:37,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:37" (1/1) ... [2020-10-13 08:25:37,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:37" (1/1) ... [2020-10-13 08:25:37,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:37" (1/1) ... [2020-10-13 08:25:37,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:37" (1/1) ... [2020-10-13 08:25:37,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:25:37,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:25:37,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:25:37,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:25:37,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:25:37,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:25:37,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:25:37,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:25:37,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:25:37,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:25:37,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:25:37,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:25:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:25:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:25:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:25:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:25:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:25:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:25:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:25:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:25:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:25:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:25:42,314 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:25:42,315 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:25:42,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:25:42 BoogieIcfgContainer [2020-10-13 08:25:42,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:25:42,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:25:42,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:25:42,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:25:42,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:25:34" (1/3) ... [2020-10-13 08:25:42,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad7f89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:25:42, skipping insertion in model container [2020-10-13 08:25:42,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:37" (2/3) ... [2020-10-13 08:25:42,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad7f89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:25:42, skipping insertion in model container [2020-10-13 08:25:42,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:25:42" (3/3) ... [2020-10-13 08:25:42,342 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label48.c [2020-10-13 08:25:42,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:25:42,366 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:25:42,381 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:25:42,416 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:25:42,416 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:25:42,416 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:25:42,416 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:25:42,416 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:25:42,416 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:25:42,416 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:25:42,417 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:25:42,455 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:25:42,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 08:25:42,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:42,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:25:42,463 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:42,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:42,469 INFO L82 PathProgramCache]: Analyzing trace with hash 415981533, now seen corresponding path program 1 times [2020-10-13 08:25:42,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:42,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942255685] [2020-10-13 08:25:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:42,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:42,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 08:25:42,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:42,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-13 08:25:42,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:42,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:25:42,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:25:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:25:42,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:25:43,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:43,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:43,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:43,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:43,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:25:43,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:25:43,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:43,087 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 08:25:43,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942255685] [2020-10-13 08:25:43,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:25:43,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:25:43,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130103809] [2020-10-13 08:25:43,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:25:43,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:43,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:25:43,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:25:43,116 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:25:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:51,001 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:25:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:51,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-13 08:25:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:51,036 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:25:51,036 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:25:51,045 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 08:25:51,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:25:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:25:51,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:25:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-13 08:25:51,190 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 16 [2020-10-13 08:25:51,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:51,191 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-13 08:25:51,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:25:51,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-13 08:25:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 08:25:51,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:51,196 INFO L422 BasicCegarLoop]: trace histogram [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 08:25:51,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:25:51,197 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:51,197 INFO L82 PathProgramCache]: Analyzing trace with hash 592611877, now seen corresponding path program 1 times [2020-10-13 08:25:51,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:51,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479911208] [2020-10-13 08:25:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:51,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:51,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 08:25:51,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:51,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-13 08:25:51,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:51,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:51,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:25:51,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:25:51,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:51,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:51,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:51,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:51,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:51,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:51,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:25:51,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:51,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:51,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:51,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:51,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:25:51,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:51,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 08:25:51,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:25:51,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:25:51,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479911208] [2020-10-13 08:25:51,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:51,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:25:51,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38426861] [2020-10-13 08:25:51,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:25:51,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:51,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:25:51,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:51,724 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-13 08:25:59,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:59,859 INFO L93 Difference]: Finished difference Result 4672 states and 7649 transitions. [2020-10-13 08:25:59,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:59,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-13 08:25:59,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:59,876 INFO L225 Difference]: With dead ends: 4672 [2020-10-13 08:25:59,876 INFO L226 Difference]: Without dead ends: 3125 [2020-10-13 08:25:59,880 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 08:25:59,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-13 08:25:59,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-13 08:25:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-13 08:25:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4247 transitions. [2020-10-13 08:25:59,960 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4247 transitions. Word has length 91 [2020-10-13 08:25:59,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:59,961 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4247 transitions. [2020-10-13 08:25:59,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:59,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4247 transitions. [2020-10-13 08:25:59,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 08:25:59,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:59,963 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:25:59,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:25:59,964 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:59,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:59,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1064331940, now seen corresponding path program 1 times [2020-10-13 08:25:59,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:59,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874449442] [2020-10-13 08:25:59,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:00,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:00,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:26:00,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:26:00,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 872 [2020-10-13 08:26:00,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:00,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:00,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 08:26:00,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:26:00,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:00,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:00,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:00,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:00,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:00,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:00,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:26:00,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:00,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:00,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:00,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:00,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:00,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:01,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:01,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:26:01,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:26:01,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:01,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:26:01,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:01,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874449442] [2020-10-13 08:26:01,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:01,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:01,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685661890] [2020-10-13 08:26:01,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:01,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:01,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:01,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:01,083 INFO L87 Difference]: Start difference. First operand 3109 states and 4247 transitions. Second operand 5 states. [2020-10-13 08:26:09,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:09,621 INFO L93 Difference]: Finished difference Result 9334 states and 12909 transitions. [2020-10-13 08:26:09,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:09,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 08:26:09,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:09,653 INFO L225 Difference]: With dead ends: 9334 [2020-10-13 08:26:09,654 INFO L226 Difference]: Without dead ends: 6231 [2020-10-13 08:26:09,661 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 08:26:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6231 states. [2020-10-13 08:26:09,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6231 to 6223. [2020-10-13 08:26:09,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-10-13 08:26:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 7832 transitions. [2020-10-13 08:26:09,845 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 7832 transitions. Word has length 94 [2020-10-13 08:26:09,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:09,846 INFO L479 AbstractCegarLoop]: Abstraction has 6223 states and 7832 transitions. [2020-10-13 08:26:09,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:09,846 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 7832 transitions. [2020-10-13 08:26:09,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 08:26:09,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:09,856 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:26:09,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:26:09,856 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:09,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:09,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1578899491, now seen corresponding path program 1 times [2020-10-13 08:26:09,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:09,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505919012] [2020-10-13 08:26:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:09,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:10,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:10,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 08:26:10,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:26:10,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-13 08:26:10,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 08:26:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:26:10,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:10,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:10,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:10,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:10,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:10,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:26:10,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:10,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:10,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:10,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:10,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:26:10,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:10,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:26:10,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:26:10,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:10,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:10,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505919012] [2020-10-13 08:26:10,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:10,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:10,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110790711] [2020-10-13 08:26:10,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:10,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:10,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:10,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:10,730 INFO L87 Difference]: Start difference. First operand 6223 states and 7832 transitions. Second operand 5 states. [2020-10-13 08:26:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:20,728 INFO L93 Difference]: Finished difference Result 18668 states and 23860 transitions. [2020-10-13 08:26:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:20,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 08:26:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:20,779 INFO L225 Difference]: With dead ends: 18668 [2020-10-13 08:26:20,780 INFO L226 Difference]: Without dead ends: 12451 [2020-10-13 08:26:20,796 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 08:26:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12451 states. [2020-10-13 08:26:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12451 to 10905. [2020-10-13 08:26:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10905 states. [2020-10-13 08:26:21,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10905 states to 10905 states and 13815 transitions. [2020-10-13 08:26:21,083 INFO L78 Accepts]: Start accepts. Automaton has 10905 states and 13815 transitions. Word has length 95 [2020-10-13 08:26:21,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:21,084 INFO L479 AbstractCegarLoop]: Abstraction has 10905 states and 13815 transitions. [2020-10-13 08:26:21,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:21,084 INFO L276 IsEmpty]: Start isEmpty. Operand 10905 states and 13815 transitions. [2020-10-13 08:26:21,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 08:26:21,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:21,092 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:26:21,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:26:21,093 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:21,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:21,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2055296553, now seen corresponding path program 1 times [2020-10-13 08:26:21,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:21,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465988280] [2020-10-13 08:26:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:21,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:21,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:21,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:26:21,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:26:21,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-13 08:26:21,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 08:26:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:26:21,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:21,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:21,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:21,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:21,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:21,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:26:21,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:21,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:21,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:21,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:21,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:26:21,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:21,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:26:21,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:26:21,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:21,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465988280] [2020-10-13 08:26:21,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:21,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:21,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407687240] [2020-10-13 08:26:21,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:21,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:21,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:21,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:21,974 INFO L87 Difference]: Start difference. First operand 10905 states and 13815 transitions. Second operand 5 states. [2020-10-13 08:26:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:32,906 INFO L93 Difference]: Finished difference Result 28028 states and 36519 transitions. [2020-10-13 08:26:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:32,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 08:26:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:32,965 INFO L225 Difference]: With dead ends: 28028 [2020-10-13 08:26:32,965 INFO L226 Difference]: Without dead ends: 17129 [2020-10-13 08:26:32,993 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 08:26:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17129 states. [2020-10-13 08:26:33,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17129 to 17113. [2020-10-13 08:26:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17113 states. [2020-10-13 08:26:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17113 states to 17113 states and 22244 transitions. [2020-10-13 08:26:33,420 INFO L78 Accepts]: Start accepts. Automaton has 17113 states and 22244 transitions. Word has length 105 [2020-10-13 08:26:33,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:33,420 INFO L479 AbstractCegarLoop]: Abstraction has 17113 states and 22244 transitions. [2020-10-13 08:26:33,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:33,421 INFO L276 IsEmpty]: Start isEmpty. Operand 17113 states and 22244 transitions. [2020-10-13 08:26:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 08:26:33,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:33,426 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:33,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:26:33,426 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:33,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1758325736, now seen corresponding path program 1 times [2020-10-13 08:26:33,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:33,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619384393] [2020-10-13 08:26:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:33,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:33,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:34,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:34,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:35,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:35,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 08:26:35,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:26:35,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1698 [2020-10-13 08:26:35,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:26:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:26:35,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:35,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:35,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:35,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:35,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:35,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:35,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:26:35,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:35,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:35,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:35,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:35,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:26:35,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 08:26:35,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:26:35,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:26:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:35,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:35,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:35,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:35,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:26:35,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:26:35,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 08:26:35,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:26:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:26:35,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:26:35,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619384393] [2020-10-13 08:26:35,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:35,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:26:35,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329667763] [2020-10-13 08:26:35,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:26:35,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:35,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:26:35,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:35,866 INFO L87 Difference]: Start difference. First operand 17113 states and 22244 transitions. Second operand 6 states. [2020-10-13 08:26:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:43,547 INFO L93 Difference]: Finished difference Result 34414 states and 44864 transitions. [2020-10-13 08:26:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:26:43,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-10-13 08:26:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:43,601 INFO L225 Difference]: With dead ends: 34414 [2020-10-13 08:26:43,601 INFO L226 Difference]: Without dead ends: 17260 [2020-10-13 08:26:43,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:26:43,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17260 states. [2020-10-13 08:26:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17260 to 17113. [2020-10-13 08:26:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17113 states. [2020-10-13 08:26:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17113 states to 17113 states and 21560 transitions. [2020-10-13 08:26:44,069 INFO L78 Accepts]: Start accepts. Automaton has 17113 states and 21560 transitions. Word has length 163 [2020-10-13 08:26:44,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:44,070 INFO L479 AbstractCegarLoop]: Abstraction has 17113 states and 21560 transitions. [2020-10-13 08:26:44,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:26:44,070 INFO L276 IsEmpty]: Start isEmpty. Operand 17113 states and 21560 transitions. [2020-10-13 08:26:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 08:26:44,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:44,074 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:44,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:26:44,074 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:44,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:44,075 INFO L82 PathProgramCache]: Analyzing trace with hash 2015601659, now seen corresponding path program 1 times [2020-10-13 08:26:44,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:44,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256762974] [2020-10-13 08:26:44,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:44,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:44,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:44,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:46,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:46,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:26:46,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:26:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1938 [2020-10-13 08:26:46,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:26:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:26:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:46,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:46,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:46,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:46,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:46,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:26:46,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:46,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:46,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:46,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:46,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:46,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:26:46,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:46,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 08:26:46,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:46,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:26:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:26:46,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:26:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:46,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:46,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:46,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:26:46,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:46,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 08:26:46,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:26:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:26:46,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:26:46,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256762974] [2020-10-13 08:26:46,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:46,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:26:46,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121325701] [2020-10-13 08:26:46,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:26:46,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:46,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:26:46,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:26:46,498 INFO L87 Difference]: Start difference. First operand 17113 states and 21560 transitions. Second operand 8 states. [2020-10-13 08:27:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:01,794 INFO L93 Difference]: Finished difference Result 43167 states and 57021 transitions. [2020-10-13 08:27:01,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 08:27:01,796 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 164 [2020-10-13 08:27:01,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:01,889 INFO L225 Difference]: With dead ends: 43167 [2020-10-13 08:27:01,889 INFO L226 Difference]: Without dead ends: 26060 [2020-10-13 08:27:01,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 08:27:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26060 states. [2020-10-13 08:27:02,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26060 to 26008. [2020-10-13 08:27:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26008 states. [2020-10-13 08:27:02,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26008 states to 26008 states and 32953 transitions. [2020-10-13 08:27:02,424 INFO L78 Accepts]: Start accepts. Automaton has 26008 states and 32953 transitions. Word has length 164 [2020-10-13 08:27:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:02,425 INFO L479 AbstractCegarLoop]: Abstraction has 26008 states and 32953 transitions. [2020-10-13 08:27:02,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:27:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 26008 states and 32953 transitions. [2020-10-13 08:27:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 08:27:02,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:02,429 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:27:02,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:27:02,430 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:02,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash 824985548, now seen corresponding path program 1 times [2020-10-13 08:27:02,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:02,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242532238] [2020-10-13 08:27:02,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:02,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:03,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:03,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:27:03,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:27:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 804 [2020-10-13 08:27:03,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:03,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:03,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:27:03,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:27:03,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:03,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:03,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:03,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:27:03,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:03,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:03,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:03,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:03,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 08:27:03,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 08:27:03,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:27:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:03,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242532238] [2020-10-13 08:27:03,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:03,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:27:03,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464064075] [2020-10-13 08:27:03,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:27:03,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:03,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:27:03,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:03,647 INFO L87 Difference]: Start difference. First operand 26008 states and 32953 transitions. Second operand 6 states. [2020-10-13 08:27:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:19,333 INFO L93 Difference]: Finished difference Result 68376 states and 88409 transitions. [2020-10-13 08:27:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:27:19,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-10-13 08:27:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:19,453 INFO L225 Difference]: With dead ends: 68376 [2020-10-13 08:27:19,453 INFO L226 Difference]: Without dead ends: 42374 [2020-10-13 08:27:19,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 08:27:19,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42374 states. [2020-10-13 08:27:20,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42374 to 36975. [2020-10-13 08:27:20,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36975 states. [2020-10-13 08:27:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36975 states to 36975 states and 47992 transitions. [2020-10-13 08:27:20,226 INFO L78 Accepts]: Start accepts. Automaton has 36975 states and 47992 transitions. Word has length 170 [2020-10-13 08:27:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:20,227 INFO L479 AbstractCegarLoop]: Abstraction has 36975 states and 47992 transitions. [2020-10-13 08:27:20,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:27:20,227 INFO L276 IsEmpty]: Start isEmpty. Operand 36975 states and 47992 transitions. [2020-10-13 08:27:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-13 08:27:20,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:20,234 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:20,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:27:20,234 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:20,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:20,235 INFO L82 PathProgramCache]: Analyzing trace with hash 947895328, now seen corresponding path program 1 times [2020-10-13 08:27:20,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:20,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250232221] [2020-10-13 08:27:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:20,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:20,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:22,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-13 08:27:22,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:27:22,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2354 [2020-10-13 08:27:22,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 08:27:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:27:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:22,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:22,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:22,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:22,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:27:22,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:22,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:22,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:27:22,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:27:22,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:27:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:22,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 08:27:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:22,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:22,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:27:22,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:22,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:27:22,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:27:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:27:22,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:27:23,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250232221] [2020-10-13 08:27:23,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:23,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:27:23,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397755911] [2020-10-13 08:27:23,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:27:23,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:23,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:27:23,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:27:23,057 INFO L87 Difference]: Start difference. First operand 36975 states and 47992 transitions. Second operand 7 states. [2020-10-13 08:27:40,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:40,719 INFO L93 Difference]: Finished difference Result 95243 states and 143598 transitions. [2020-10-13 08:27:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:27:40,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-13 08:27:40,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:40,996 INFO L225 Difference]: With dead ends: 95243 [2020-10-13 08:27:40,997 INFO L226 Difference]: Without dead ends: 58274 [2020-10-13 08:27:41,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:27:41,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58274 states. [2020-10-13 08:27:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58274 to 55291. [2020-10-13 08:27:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55291 states. [2020-10-13 08:27:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55291 states to 55291 states and 71826 transitions. [2020-10-13 08:27:42,608 INFO L78 Accepts]: Start accepts. Automaton has 55291 states and 71826 transitions. Word has length 191 [2020-10-13 08:27:42,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:42,608 INFO L479 AbstractCegarLoop]: Abstraction has 55291 states and 71826 transitions. [2020-10-13 08:27:42,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:27:42,609 INFO L276 IsEmpty]: Start isEmpty. Operand 55291 states and 71826 transitions. [2020-10-13 08:27:42,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-13 08:27:42,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:42,619 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:27:42,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:27:42,619 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:42,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:42,620 INFO L82 PathProgramCache]: Analyzing trace with hash 901225927, now seen corresponding path program 1 times [2020-10-13 08:27:42,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:42,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89785587] [2020-10-13 08:27:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:42,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:43,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:44,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:44,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 08:27:44,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:27:44,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-10-13 08:27:44,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:44,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:44,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 08:27:44,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:27:44,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:44,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:44,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:44,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:44,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:44,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:27:44,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:44,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:44,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:44,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:44,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:44,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:27:44,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:44,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:27:44,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:27:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:44,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 08:27:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:44,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:44,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:44,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:27:44,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:27:44,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:27:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:27:44,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:27:44,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89785587] [2020-10-13 08:27:44,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:44,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:27:44,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216331139] [2020-10-13 08:27:44,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:27:44,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:44,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:27:44,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:27:44,691 INFO L87 Difference]: Start difference. First operand 55291 states and 71826 transitions. Second operand 7 states. [2020-10-13 08:27:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:59,419 INFO L93 Difference]: Finished difference Result 129283 states and 192848 transitions. [2020-10-13 08:27:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:27:59,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-10-13 08:27:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:59,870 INFO L225 Difference]: With dead ends: 129283 [2020-10-13 08:27:59,870 INFO L226 Difference]: Without dead ends: 73998 [2020-10-13 08:28:00,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:28:00,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73998 states. [2020-10-13 08:28:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73998 to 72319. [2020-10-13 08:28:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72319 states. [2020-10-13 08:28:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72319 states to 72319 states and 91803 transitions. [2020-10-13 08:28:04,338 INFO L78 Accepts]: Start accepts. Automaton has 72319 states and 91803 transitions. Word has length 206 [2020-10-13 08:28:04,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:04,339 INFO L479 AbstractCegarLoop]: Abstraction has 72319 states and 91803 transitions. [2020-10-13 08:28:04,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:28:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 72319 states and 91803 transitions. [2020-10-13 08:28:04,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-13 08:28:04,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:04,359 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:28:04,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:28:04,360 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:04,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:04,361 INFO L82 PathProgramCache]: Analyzing trace with hash 994185330, now seen corresponding path program 1 times [2020-10-13 08:28:04,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:04,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911877324] [2020-10-13 08:28:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:04,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:05,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:05,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:07,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:07,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-13 08:28:07,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:28:07,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2755 [2020-10-13 08:28:07,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:07,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 243 [2020-10-13 08:28:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:28:07,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:07,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:07,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:07,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:07,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:07,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:28:07,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:07,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:07,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:07,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:07,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:07,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:07,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:07,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:07,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:28:07,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:07,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:28:07,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:07,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:07,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 08:28:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:07,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:07,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:07,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 08:28:07,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:07,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 08:28:07,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 08:28:07,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 08:28:08,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911877324] [2020-10-13 08:28:08,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:08,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:28:08,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448993197] [2020-10-13 08:28:08,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:28:08,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:08,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:28:08,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:28:08,019 INFO L87 Difference]: Start difference. First operand 72319 states and 91803 transitions. Second operand 5 states. [2020-10-13 08:28:22,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:22,471 INFO L93 Difference]: Finished difference Result 159329 states and 208593 transitions. [2020-10-13 08:28:22,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:22,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-10-13 08:28:22,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:22,721 INFO L225 Difference]: With dead ends: 159329 [2020-10-13 08:28:22,721 INFO L226 Difference]: Without dead ends: 87016 [2020-10-13 08:28:22,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:22,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87016 states. [2020-10-13 08:28:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87016 to 83930. [2020-10-13 08:28:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83930 states. [2020-10-13 08:28:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83930 states to 83930 states and 103633 transitions. [2020-10-13 08:28:24,270 INFO L78 Accepts]: Start accepts. Automaton has 83930 states and 103633 transitions. Word has length 247 [2020-10-13 08:28:24,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:24,271 INFO L479 AbstractCegarLoop]: Abstraction has 83930 states and 103633 transitions. [2020-10-13 08:28:24,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:28:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 83930 states and 103633 transitions. [2020-10-13 08:28:24,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-13 08:28:24,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:24,300 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 08:28:24,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:28:24,301 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:24,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:24,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1354794265, now seen corresponding path program 1 times [2020-10-13 08:28:24,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:24,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670995801] [2020-10-13 08:28:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:24,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:24,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:28,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:28,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-13 08:28:28,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:28:28,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4504 [2020-10-13 08:28:28,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-13 08:28:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:28:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:28,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:28,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:28,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:28,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:28,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:28:28,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:28,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:28,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:28,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:28,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:29,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:29,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:29,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:29,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:28:29,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:29,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:28:29,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:29,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:29,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:29,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:29,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:29,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 08:28:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:29,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:29,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 08:28:29,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 08:28:29,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 08:28:29,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:29,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:28:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:29,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:29,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:29,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:28:29,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:29,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:28:29,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:28:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:28:29,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 08:28:29,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670995801] [2020-10-13 08:28:29,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:29,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:28:29,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710364828] [2020-10-13 08:28:29,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:28:29,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:29,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:28:29,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:28:29,574 INFO L87 Difference]: Start difference. First operand 83930 states and 103633 transitions. Second operand 7 states. [2020-10-13 08:28:50,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:50,151 INFO L93 Difference]: Finished difference Result 168977 states and 209525 transitions. [2020-10-13 08:28:50,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:28:50,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-13 08:28:50,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:50,310 INFO L225 Difference]: With dead ends: 168977 [2020-10-13 08:28:50,311 INFO L226 Difference]: Without dead ends: 85053 [2020-10-13 08:28:50,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:28:50,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85053 states. [2020-10-13 08:28:52,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85053 to 84207. [2020-10-13 08:28:52,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84207 states. [2020-10-13 08:28:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84207 states to 84207 states and 96134 transitions. [2020-10-13 08:28:52,203 INFO L78 Accepts]: Start accepts. Automaton has 84207 states and 96134 transitions. Word has length 301 [2020-10-13 08:28:52,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:52,204 INFO L479 AbstractCegarLoop]: Abstraction has 84207 states and 96134 transitions. [2020-10-13 08:28:52,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:28:52,204 INFO L276 IsEmpty]: Start isEmpty. Operand 84207 states and 96134 transitions. [2020-10-13 08:28:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-13 08:28:52,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:52,228 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:28:52,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:28:52,229 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:52,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:52,229 INFO L82 PathProgramCache]: Analyzing trace with hash -719571671, now seen corresponding path program 1 times [2020-10-13 08:28:52,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:52,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742118824] [2020-10-13 08:28:52,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:52,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:52,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:52,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:53,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:53,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:55,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:55,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-13 08:28:55,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:28:55,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3698 [2020-10-13 08:28:55,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 08:28:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:28:55,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:56,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:56,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:56,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:28:56,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:56,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:56,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:56,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:28:56,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:28:56,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:56,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:56,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:56,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:56,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 08:28:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:56,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:56,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:56,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:28:56,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 08:28:56,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 08:28:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 08:28:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:56,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:56,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:56,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:28:56,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:56,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 08:28:56,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:28:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:28:56,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-13 08:28:56,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742118824] [2020-10-13 08:28:56,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:56,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:28:56,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210450231] [2020-10-13 08:28:56,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:28:56,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:56,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:28:56,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:28:56,528 INFO L87 Difference]: Start difference. First operand 84207 states and 96134 transitions. Second operand 7 states.