/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/Problem01_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:04:07,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:04:07,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:04:07,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:04:07,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:04:07,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:04:07,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:04:07,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:04:07,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:04:07,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:04:07,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:04:07,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:04:07,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:04:07,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:04:07,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:04:07,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:04:07,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:04:07,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:04:07,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:04:07,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:04:07,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:04:07,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:04:07,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:04:07,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:04:07,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:04:07,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:04:07,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:04:07,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:04:07,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:04:07,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:04:07,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:04:07,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:04:07,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:04:07,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:04:07,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:04:07,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:04:07,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:04:07,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:04:07,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:04:07,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:04:07,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:04:07,176 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 06:04:07,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:04:07,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:04:07,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:04:07,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:04:07,201 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:04:07,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:04:07,201 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:04:07,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:04:07,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:04:07,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:04:07,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:04:07,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:04:07,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:04:07,203 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:04:07,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:04:07,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:04:07,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:04:07,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:04:07,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:04:07,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:04:07,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:04:07,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:04:07,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:04:07,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:04:07,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:04:07,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:04:07,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:04:07,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:04:07,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:04:07,206 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 06:04:07,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:04:07,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:04:07,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:04:07,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:04:07,523 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:04:07,523 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label37.c [2020-10-13 06:04:07,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cf2e9be2/ab938e3c2e9f4a899aac2d969fe6a50f/FLAG5c1f5f8a7 [2020-10-13 06:04:08,164 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:04:08,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label37.c [2020-10-13 06:04:08,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cf2e9be2/ab938e3c2e9f4a899aac2d969fe6a50f/FLAG5c1f5f8a7 [2020-10-13 06:04:08,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cf2e9be2/ab938e3c2e9f4a899aac2d969fe6a50f [2020-10-13 06:04:08,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:04:08,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:04:08,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:04:08,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:04:08,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:04:08,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:08" (1/1) ... [2020-10-13 06:04:08,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:08, skipping insertion in model container [2020-10-13 06:04:08,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:08" (1/1) ... [2020-10-13 06:04:08,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:04:08,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:04:08,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:04:08,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:04:09,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:04:09,190 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:04:09,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:09 WrapperNode [2020-10-13 06:04:09,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:04:09,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:04:09,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:04:09,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:04:09,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:09" (1/1) ... [2020-10-13 06:04:09,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:09" (1/1) ... [2020-10-13 06:04:09,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:09" (1/1) ... [2020-10-13 06:04:09,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:09" (1/1) ... [2020-10-13 06:04:09,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:09" (1/1) ... [2020-10-13 06:04:09,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:09" (1/1) ... [2020-10-13 06:04:09,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:09" (1/1) ... [2020-10-13 06:04:09,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:04:09,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:04:09,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:04:09,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:04:09,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:09" (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 06:04:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:04:09,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:04:09,367 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:04:09,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:04:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:04:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:04:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:04:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:04:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:04:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:04:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:04:10,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:04:10,487 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:04:10,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:10 BoogieIcfgContainer [2020-10-13 06:04:10,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:04:10,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:04:10,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:04:10,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:04:10,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:04:08" (1/3) ... [2020-10-13 06:04:10,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27db9d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:10, skipping insertion in model container [2020-10-13 06:04:10,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:09" (2/3) ... [2020-10-13 06:04:10,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27db9d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:10, skipping insertion in model container [2020-10-13 06:04:10,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:10" (3/3) ... [2020-10-13 06:04:10,503 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label37.c [2020-10-13 06:04:10,516 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:04:10,526 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:04:10,545 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:04:10,576 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:04:10,577 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:04:10,577 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:04:10,577 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:04:10,577 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:04:10,578 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:04:10,578 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:04:10,578 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:04:10,604 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-10-13 06:04:10,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 06:04:10,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:04:10,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:04:10,618 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:04:10,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:04:10,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1092132023, now seen corresponding path program 1 times [2020-10-13 06:04:10,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:04:10,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911493031] [2020-10-13 06:04:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:04:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:10,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:11,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:12,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:12,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 06:04:12,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:04:12,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1389 [2020-10-13 06:04:12,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:04:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:04:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 06:04:12,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:04:12,620 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 25 [2020-10-13 06:04:12,761 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2020-10-13 06:04:13,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:04:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:13,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:13,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:13,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:04:13,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:04:13,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:04:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:04:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:13,231 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 06:04:13,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911493031] [2020-10-13 06:04:13,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:04:13,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:04:13,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022730612] [2020-10-13 06:04:13,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:04:13,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:04:13,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:04:13,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:04:13,259 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 12 states. [2020-10-13 06:04:14,005 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-13 06:04:14,263 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-13 06:04:14,635 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2020-10-13 06:04:15,145 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2020-10-13 06:04:15,426 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-10-13 06:04:16,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:04:16,331 INFO L93 Difference]: Finished difference Result 474 states and 793 transitions. [2020-10-13 06:04:16,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:04:16,334 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-10-13 06:04:16,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:04:16,358 INFO L225 Difference]: With dead ends: 474 [2020-10-13 06:04:16,359 INFO L226 Difference]: Without dead ends: 205 [2020-10-13 06:04:16,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:04:16,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-13 06:04:16,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2020-10-13 06:04:16,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 06:04:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2020-10-13 06:04:16,439 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 81 [2020-10-13 06:04:16,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:04:16,439 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2020-10-13 06:04:16,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:04:16,440 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2020-10-13 06:04:16,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 06:04:16,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:04:16,445 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:04:16,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:04:16,446 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:04:16,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:04:16,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1536113860, now seen corresponding path program 1 times [2020-10-13 06:04:16,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:04:16,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163873999] [2020-10-13 06:04:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:04:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:16,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:16,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:17,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:17,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 06:04:17,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:04:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-10-13 06:04:17,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:04:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 06:04:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 06:04:17,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:18,054 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-13 06:04:18,228 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-10-13 06:04:18,445 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 52 [2020-10-13 06:04:18,651 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 49 [2020-10-13 06:04:18,847 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 45 [2020-10-13 06:04:19,054 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 41 [2020-10-13 06:04:19,267 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 35 [2020-10-13 06:04:19,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:04:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:19,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:19,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:04:19,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:04:19,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:04:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:04:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:19,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:04:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:19,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:19,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 06:04:19,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:19,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:04:19,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:04:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 06:04:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:04:19,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163873999] [2020-10-13 06:04:19,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:04:19,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 06:04:19,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466574149] [2020-10-13 06:04:19,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:04:19,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:04:19,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:04:19,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:04:19,531 INFO L87 Difference]: Start difference. First operand 205 states and 277 transitions. Second operand 13 states. [2020-10-13 06:04:19,988 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-13 06:04:20,585 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 114 [2020-10-13 06:04:21,426 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2020-10-13 06:04:21,849 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 108 [2020-10-13 06:04:22,352 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 105 [2020-10-13 06:04:22,652 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2020-10-13 06:04:23,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:04:23,284 INFO L93 Difference]: Finished difference Result 433 states and 637 transitions. [2020-10-13 06:04:23,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:04:23,285 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-10-13 06:04:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:04:23,289 INFO L225 Difference]: With dead ends: 433 [2020-10-13 06:04:23,290 INFO L226 Difference]: Without dead ends: 294 [2020-10-13 06:04:23,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2020-10-13 06:04:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-13 06:04:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 276. [2020-10-13 06:04:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-13 06:04:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 355 transitions. [2020-10-13 06:04:23,315 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 355 transitions. Word has length 89 [2020-10-13 06:04:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:04:23,316 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 355 transitions. [2020-10-13 06:04:23,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:04:23,316 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 355 transitions. [2020-10-13 06:04:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 06:04:23,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:04:23,320 INFO L422 BasicCegarLoop]: trace histogram [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 06:04:23,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:04:23,320 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:04:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:04:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash 2091105022, now seen corresponding path program 1 times [2020-10-13 06:04:23,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:04:23,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235797330] [2020-10-13 06:04:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:04:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:23,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:23,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:23,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 06:04:23,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-13 06:04:23,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:04:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:04:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 06:04:23,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:04:23,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:04:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:23,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:23,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:04:23,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:23,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:04:23,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:04:23,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:23,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:04:23,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:23,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:04:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:23,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:23,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:23,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:04:23,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:04:23,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:04:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:04:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:23,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:04:23,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235797330] [2020-10-13 06:04:23,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:04:23,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:04:23,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401397067] [2020-10-13 06:04:23,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:04:23,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:04:23,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:04:23,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:04:23,808 INFO L87 Difference]: Start difference. First operand 276 states and 355 transitions. Second operand 5 states. [2020-10-13 06:04:24,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:04:24,788 INFO L93 Difference]: Finished difference Result 625 states and 851 transitions. [2020-10-13 06:04:24,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:04:24,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-13 06:04:24,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:04:24,797 INFO L225 Difference]: With dead ends: 625 [2020-10-13 06:04:24,797 INFO L226 Difference]: Without dead ends: 415 [2020-10-13 06:04:24,798 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 06:04:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-13 06:04:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2020-10-13 06:04:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-13 06:04:24,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 535 transitions. [2020-10-13 06:04:24,826 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 535 transitions. Word has length 92 [2020-10-13 06:04:24,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:04:24,826 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 535 transitions. [2020-10-13 06:04:24,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:04:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 535 transitions. [2020-10-13 06:04:24,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 06:04:24,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:04:24,830 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:04:24,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:04:24,831 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:04:24,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:04:24,831 INFO L82 PathProgramCache]: Analyzing trace with hash 281991891, now seen corresponding path program 1 times [2020-10-13 06:04:24,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:04:24,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807859037] [2020-10-13 06:04:24,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:04:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:25,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:25,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:27,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:27,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 06:04:27,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:04:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2814 [2020-10-13 06:04:27,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:04:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:04:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:04:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:04:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:04:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:27,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:27,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:04:27,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:27,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:04:27,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:27,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:04:27,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:04:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:04:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:04:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:27,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:27,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:04:27,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:27,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:04:27,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:27,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:04:27,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:27,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:04:27,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:04:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:04:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:27,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:27,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:04:27,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:27,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:04:27,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:27,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:04:27,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:04:27,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:04:27,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:04:27,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807859037] [2020-10-13 06:04:27,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:04:27,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:04:27,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360012749] [2020-10-13 06:04:27,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:04:27,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:04:27,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:04:27,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:04:27,838 INFO L87 Difference]: Start difference. First operand 415 states and 535 transitions. Second operand 7 states. [2020-10-13 06:04:28,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:04:28,967 INFO L93 Difference]: Finished difference Result 1044 states and 1398 transitions. [2020-10-13 06:04:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:04:28,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-13 06:04:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:04:28,972 INFO L225 Difference]: With dead ends: 1044 [2020-10-13 06:04:28,972 INFO L226 Difference]: Without dead ends: 695 [2020-10-13 06:04:28,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:04:28,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-13 06:04:29,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-10-13 06:04:29,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-13 06:04:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 903 transitions. [2020-10-13 06:04:29,017 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 903 transitions. Word has length 101 [2020-10-13 06:04:29,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:04:29,017 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 903 transitions. [2020-10-13 06:04:29,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:04:29,018 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 903 transitions. [2020-10-13 06:04:29,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 06:04:29,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:04:29,023 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:04:29,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:04:29,023 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:04:29,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:04:29,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1294218913, now seen corresponding path program 1 times [2020-10-13 06:04:29,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:04:29,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356065053] [2020-10-13 06:04:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:04:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:29,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:29,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:31,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:31,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 06:04:31,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:04:31,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2708 [2020-10-13 06:04:31,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:04:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:04:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:04:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:31,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:04:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:31,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:31,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:31,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:04:31,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:31,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:04:31,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:04:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:04:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:04:31,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:04:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:31,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:31,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:31,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:04:31,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:31,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:04:31,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:31,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:04:31,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:04:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:31,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:04:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:31,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:31,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:04:31,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:31,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:04:31,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:04:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:04:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:04:31,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:04:31,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356065053] [2020-10-13 06:04:31,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:04:31,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:04:31,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862851744] [2020-10-13 06:04:31,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:04:31,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:04:31,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:04:31,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:04:31,952 INFO L87 Difference]: Start difference. First operand 695 states and 903 transitions. Second operand 7 states. [2020-10-13 06:04:33,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:04:33,261 INFO L93 Difference]: Finished difference Result 1336 states and 1755 transitions. [2020-10-13 06:04:33,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:04:33,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-13 06:04:33,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:04:33,272 INFO L225 Difference]: With dead ends: 1336 [2020-10-13 06:04:33,273 INFO L226 Difference]: Without dead ends: 707 [2020-10-13 06:04:33,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:04:33,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-10-13 06:04:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 703. [2020-10-13 06:04:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-10-13 06:04:33,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 911 transitions. [2020-10-13 06:04:33,337 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 911 transitions. Word has length 107 [2020-10-13 06:04:33,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:04:33,341 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 911 transitions. [2020-10-13 06:04:33,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:04:33,342 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 911 transitions. [2020-10-13 06:04:33,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 06:04:33,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:04:33,350 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:04:33,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:04:33,351 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:04:33,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:04:33,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1412933997, now seen corresponding path program 1 times [2020-10-13 06:04:33,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:04:33,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68785580] [2020-10-13 06:04:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:04:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:33,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:33,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:33,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:33,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:36,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:36,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:36,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 06:04:36,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:04:36,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2840 [2020-10-13 06:04:36,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:04:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:04:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:04:36,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:36,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:04:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:36,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:36,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:36,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:04:36,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:04:36,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:04:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:36,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:04:36,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:04:36,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:04:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:36,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:36,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:36,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:04:36,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:36,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:04:36,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:36,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:04:36,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:36,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:04:36,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:04:36,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:04:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:36,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:36,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:36,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:04:36,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:04:36,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:04:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:04:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:04:36,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:04:36,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68785580] [2020-10-13 06:04:36,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:04:36,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:04:36,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461133844] [2020-10-13 06:04:36,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:04:36,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:04:36,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:04:36,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:04:36,453 INFO L87 Difference]: Start difference. First operand 703 states and 911 transitions. Second operand 7 states. [2020-10-13 06:04:38,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:04:38,275 INFO L93 Difference]: Finished difference Result 1969 states and 2548 transitions. [2020-10-13 06:04:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:04:38,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-13 06:04:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:04:38,284 INFO L225 Difference]: With dead ends: 1969 [2020-10-13 06:04:38,285 INFO L226 Difference]: Without dead ends: 1189 [2020-10-13 06:04:38,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:04:38,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-10-13 06:04:38,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1124. [2020-10-13 06:04:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1124 states. [2020-10-13 06:04:38,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1276 transitions. [2020-10-13 06:04:38,335 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1276 transitions. Word has length 108 [2020-10-13 06:04:38,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:04:38,336 INFO L479 AbstractCegarLoop]: Abstraction has 1124 states and 1276 transitions. [2020-10-13 06:04:38,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:04:38,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1276 transitions. [2020-10-13 06:04:38,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 06:04:38,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:04:38,340 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:04:38,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:04:38,343 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:04:38,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:04:38,344 INFO L82 PathProgramCache]: Analyzing trace with hash 660665722, now seen corresponding path program 1 times [2020-10-13 06:04:38,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:04:38,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939537968] [2020-10-13 06:04:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:04:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:38,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:38,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:38,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:39,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:39,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 06:04:39,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:04:39,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1398 [2020-10-13 06:04:39,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:04:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 06:04:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:04:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:40,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:04:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:40,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:40,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:40,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:04:40,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:40,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:04:40,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:04:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:04:40,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:40,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:04:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:40,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:40,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:40,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 06:04:40,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 06:04:40,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:40,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:04:40,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:40,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 06:04:40,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:04:40,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939537968] [2020-10-13 06:04:40,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:04:40,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 06:04:40,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430508346] [2020-10-13 06:04:40,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:04:40,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:04:40,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:04:40,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:04:40,470 INFO L87 Difference]: Start difference. First operand 1124 states and 1276 transitions. Second operand 13 states. [2020-10-13 06:04:41,312 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-10-13 06:04:41,677 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-10-13 06:04:41,941 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-13 06:04:42,165 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2020-10-13 06:04:42,486 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-13 06:04:42,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:04:42,836 INFO L93 Difference]: Finished difference Result 2304 states and 2675 transitions. [2020-10-13 06:04:42,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 06:04:42,840 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 06:04:42,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:04:42,849 INFO L225 Difference]: With dead ends: 2304 [2020-10-13 06:04:42,849 INFO L226 Difference]: Without dead ends: 1212 [2020-10-13 06:04:42,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:04:42,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-10-13 06:04:42,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1171. [2020-10-13 06:04:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-10-13 06:04:42,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1335 transitions. [2020-10-13 06:04:42,897 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1335 transitions. Word has length 122 [2020-10-13 06:04:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:04:42,898 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1335 transitions. [2020-10-13 06:04:42,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:04:42,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1335 transitions. [2020-10-13 06:04:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 06:04:42,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:04:42,902 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:04:42,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:04:42,902 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:04:42,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:04:42,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1998460565, now seen corresponding path program 1 times [2020-10-13 06:04:42,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:04:42,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740962245] [2020-10-13 06:04:42,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:04:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:43,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:43,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:44,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:45,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:45,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 06:04:45,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:04:45,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2344 [2020-10-13 06:04:45,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:04:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 06:04:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:04:45,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:04:45,689 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-10-13 06:04:45,815 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2020-10-13 06:04:46,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:04:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:46,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:46,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:46,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:04:46,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:04:46,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:04:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:04:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:46,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:04:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:46,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:46,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 06:04:46,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 06:04:46,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:04:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:04:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:46,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 06:04:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:46,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:46,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:04:46,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 06:04:46,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:04:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 06:04:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:04:46,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740962245] [2020-10-13 06:04:46,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:04:46,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 06:04:46,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960926226] [2020-10-13 06:04:46,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:04:46,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:04:46,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:04:46,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:04:46,558 INFO L87 Difference]: Start difference. First operand 1171 states and 1335 transitions. Second operand 13 states. [2020-10-13 06:04:47,226 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-13 06:04:47,582 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2020-10-13 06:04:47,967 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2020-10-13 06:04:48,304 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2020-10-13 06:04:48,550 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2020-10-13 06:04:48,923 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2020-10-13 06:04:49,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:04:49,423 INFO L93 Difference]: Finished difference Result 2418 states and 2823 transitions. [2020-10-13 06:04:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:04:49,426 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 139 [2020-10-13 06:04:49,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:04:49,432 INFO L225 Difference]: With dead ends: 2418 [2020-10-13 06:04:49,432 INFO L226 Difference]: Without dead ends: 1313 [2020-10-13 06:04:49,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-10-13 06:04:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-10-13 06:04:49,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1245. [2020-10-13 06:04:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1245 states. [2020-10-13 06:04:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1419 transitions. [2020-10-13 06:04:49,473 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1419 transitions. Word has length 139 [2020-10-13 06:04:49,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:04:49,474 INFO L479 AbstractCegarLoop]: Abstraction has 1245 states and 1419 transitions. [2020-10-13 06:04:49,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:04:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1419 transitions. [2020-10-13 06:04:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 06:04:49,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:04:49,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:04:49,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:04:49,486 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:04:49,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:04:49,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1302827319, now seen corresponding path program 1 times [2020-10-13 06:04:49,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:04:49,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732308991] [2020-10-13 06:04:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:04:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:49,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:49,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:49,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:50,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:51,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:51,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 06:04:51,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:04:51,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1491 [2020-10-13 06:04:51,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:51,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:04:51,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 06:04:51,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:04:51,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:51,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:04:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:51,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:51,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:51,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:04:51,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:51,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:04:51,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:51,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:04:51,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:51,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:04:51,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:51,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:04:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:51,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:51,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 06:04:51,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:51,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:04:51,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:51,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:04:51,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:51,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:04:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:51,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 06:04:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:51,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:51,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 06:04:51,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:51,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:04:51,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:04:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 06:04:51,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:51,623 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-13 06:04:51,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732308991] [2020-10-13 06:04:51,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:04:51,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 06:04:51,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065523610] [2020-10-13 06:04:51,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:04:51,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:04:51,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:04:51,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:04:51,625 INFO L87 Difference]: Start difference. First operand 1245 states and 1419 transitions. Second operand 13 states. [2020-10-13 06:04:52,674 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-10-13 06:04:52,943 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-10-13 06:04:53,177 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-13 06:04:53,441 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2020-10-13 06:04:53,749 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-13 06:04:54,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:04:54,205 INFO L93 Difference]: Finished difference Result 2540 states and 2954 transitions. [2020-10-13 06:04:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:04:54,211 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 158 [2020-10-13 06:04:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:04:54,218 INFO L225 Difference]: With dead ends: 2540 [2020-10-13 06:04:54,218 INFO L226 Difference]: Without dead ends: 1327 [2020-10-13 06:04:54,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:04:54,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2020-10-13 06:04:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1285. [2020-10-13 06:04:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1285 states. [2020-10-13 06:04:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1467 transitions. [2020-10-13 06:04:54,265 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1467 transitions. Word has length 158 [2020-10-13 06:04:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:04:54,266 INFO L479 AbstractCegarLoop]: Abstraction has 1285 states and 1467 transitions. [2020-10-13 06:04:54,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:04:54,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1467 transitions. [2020-10-13 06:04:54,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 06:04:54,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:04:54,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:04:54,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:04:54,272 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:04:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:04:54,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1469344645, now seen corresponding path program 1 times [2020-10-13 06:04:54,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:04:54,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354964685] [2020-10-13 06:04:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:04:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:54,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:54,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:54,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:54,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:56,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:56,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:56,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:56,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 06:04:56,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:04:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2537 [2020-10-13 06:04:56,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:04:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 06:04:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:04:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:56,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:04:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:56,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:56,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:56,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:04:56,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:56,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:04:56,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:04:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:04:56,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:04:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:56,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:56,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:04:56,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:56,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:04:56,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:04:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:04:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 06:04:56,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:56,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 06:04:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:56,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:56,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:04:56,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:04:56,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:04:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:04:56,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:04:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:04:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:04:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:04:56,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:04:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:04:57,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354964685] [2020-10-13 06:04:57,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:04:57,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:04:57,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137382813] [2020-10-13 06:04:57,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:04:57,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:04:57,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:04:57,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:04:57,029 INFO L87 Difference]: Start difference. First operand 1285 states and 1467 transitions. Second operand 7 states. [2020-10-13 06:04:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:04:58,130 INFO L93 Difference]: Finished difference Result 3372 states and 3895 transitions. [2020-10-13 06:04:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:04:58,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-13 06:04:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:04:58,140 INFO L225 Difference]: With dead ends: 3372 [2020-10-13 06:04:58,141 INFO L226 Difference]: Without dead ends: 2153 [2020-10-13 06:04:58,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:04:58,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2020-10-13 06:04:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2141. [2020-10-13 06:04:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2141 states. [2020-10-13 06:04:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 2427 transitions. [2020-10-13 06:04:58,210 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 2427 transitions. Word has length 160 [2020-10-13 06:04:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:04:58,211 INFO L479 AbstractCegarLoop]: Abstraction has 2141 states and 2427 transitions. [2020-10-13 06:04:58,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:04:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 2427 transitions. [2020-10-13 06:04:58,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 06:04:58,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:04:58,216 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:04:58,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:04:58,217 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:04:58,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:04:58,217 INFO L82 PathProgramCache]: Analyzing trace with hash -983653476, now seen corresponding path program 1 times [2020-10-13 06:04:58,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:04:58,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805353969] [2020-10-13 06:04:58,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:04:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:04:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:58,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:04:59,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:00,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:00,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 06:05:00,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:05:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2293 [2020-10-13 06:05:00,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:05:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 06:05:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 06:05:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:05:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:00,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:00,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:05:00,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:00,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:05:00,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:05:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:00,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:00,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:00,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 06:05:00,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:00,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:05:00,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:00,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:00,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 06:05:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:00,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:01,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:01,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 06:05:01,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:01,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:05:01,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:01,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:01,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:01,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:01,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:01,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 06:05:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:01,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:01,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:01,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:05:01,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:05:01,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:05:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:05:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-13 06:05:01,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805353969] [2020-10-13 06:05:01,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:05:01,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 06:05:01,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239318489] [2020-10-13 06:05:01,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:05:01,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:05:01,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:05:01,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:05:01,139 INFO L87 Difference]: Start difference. First operand 2141 states and 2427 transitions. Second operand 13 states. [2020-10-13 06:05:03,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:05:03,064 INFO L93 Difference]: Finished difference Result 4380 states and 5052 transitions. [2020-10-13 06:05:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:05:03,068 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 171 [2020-10-13 06:05:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:05:03,078 INFO L225 Difference]: With dead ends: 4380 [2020-10-13 06:05:03,078 INFO L226 Difference]: Without dead ends: 2305 [2020-10-13 06:05:03,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2020-10-13 06:05:03,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2020-10-13 06:05:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2143. [2020-10-13 06:05:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2143 states. [2020-10-13 06:05:03,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 2430 transitions. [2020-10-13 06:05:03,140 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 2430 transitions. Word has length 171 [2020-10-13 06:05:03,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:05:03,141 INFO L479 AbstractCegarLoop]: Abstraction has 2143 states and 2430 transitions. [2020-10-13 06:05:03,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:05:03,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 2430 transitions. [2020-10-13 06:05:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-13 06:05:03,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:05:03,147 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:05:03,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:05:03,147 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:05:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:05:03,148 INFO L82 PathProgramCache]: Analyzing trace with hash -3358668, now seen corresponding path program 1 times [2020-10-13 06:05:03,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:05:03,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181376253] [2020-10-13 06:05:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:05:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:03,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:03,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:03,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:03,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:04,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:05,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:05,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-13 06:05:05,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:05:05,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2648 [2020-10-13 06:05:05,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:05:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:05:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:05:05,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:06,187 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-10-13 06:05:06,310 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-10-13 06:05:06,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:05:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:06,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:06,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:06,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:05:06,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:06,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:05:06,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:06,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:06,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:06,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:05:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:06,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:06,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:06,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 06:05:06,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:06,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:05:06,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:06,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:06,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 06:05:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:06,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:06,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 06:05:06,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:06,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:05:06,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:06,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:06,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:06,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:06,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:06,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 06:05:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:06,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:06,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:06,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:05:06,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:05:06,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:05:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:05:06,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 06:05:07,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181376253] [2020-10-13 06:05:07,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:05:07,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 06:05:07,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838712781] [2020-10-13 06:05:07,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:05:07,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:05:07,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:05:07,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:05:07,006 INFO L87 Difference]: Start difference. First operand 2143 states and 2430 transitions. Second operand 13 states. [2020-10-13 06:05:07,448 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-13 06:05:07,752 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-13 06:05:08,005 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-13 06:05:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:05:08,937 INFO L93 Difference]: Finished difference Result 4200 states and 4797 transitions. [2020-10-13 06:05:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 06:05:08,937 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 183 [2020-10-13 06:05:08,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:05:08,944 INFO L225 Difference]: With dead ends: 4200 [2020-10-13 06:05:08,945 INFO L226 Difference]: Without dead ends: 2089 [2020-10-13 06:05:08,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:05:08,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-10-13 06:05:08,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2000. [2020-10-13 06:05:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2000 states. [2020-10-13 06:05:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2261 transitions. [2020-10-13 06:05:09,000 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2261 transitions. Word has length 183 [2020-10-13 06:05:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:05:09,000 INFO L479 AbstractCegarLoop]: Abstraction has 2000 states and 2261 transitions. [2020-10-13 06:05:09,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:05:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2261 transitions. [2020-10-13 06:05:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-13 06:05:09,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:05:09,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:05:09,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:05:09,006 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:05:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:05:09,006 INFO L82 PathProgramCache]: Analyzing trace with hash 906414527, now seen corresponding path program 1 times [2020-10-13 06:05:09,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:05:09,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449045029] [2020-10-13 06:05:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:05:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:09,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:10,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:10,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-13 06:05:10,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:05:10,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1317 [2020-10-13 06:05:10,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:05:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 06:05:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 06:05:10,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:10,693 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-13 06:05:10,809 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-10-13 06:05:10,928 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2020-10-13 06:05:11,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:05:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:11,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:11,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:05:11,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:11,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:05:11,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:11,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:11,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:05:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:11,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:11,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:05:11,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:11,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:05:11,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:11,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 06:05:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:11,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:11,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:11,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 06:05:11,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:11,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:05:11,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:11,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:05:11,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:11,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:05:11,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-13 06:05:11,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449045029] [2020-10-13 06:05:11,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:05:11,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 06:05:11,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854834933] [2020-10-13 06:05:11,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:05:11,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:05:11,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:05:11,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:05:11,457 INFO L87 Difference]: Start difference. First operand 2000 states and 2261 transitions. Second operand 13 states. [2020-10-13 06:05:12,406 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-13 06:05:12,710 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 112 [2020-10-13 06:05:13,020 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 109 [2020-10-13 06:05:13,643 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2020-10-13 06:05:14,049 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 103 [2020-10-13 06:05:14,424 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 98 [2020-10-13 06:05:14,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:05:14,917 INFO L93 Difference]: Finished difference Result 4056 states and 4660 transitions. [2020-10-13 06:05:14,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 06:05:14,923 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 195 [2020-10-13 06:05:14,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:05:14,931 INFO L225 Difference]: With dead ends: 4056 [2020-10-13 06:05:14,932 INFO L226 Difference]: Without dead ends: 2028 [2020-10-13 06:05:14,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2020-10-13 06:05:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2020-10-13 06:05:14,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2019. [2020-10-13 06:05:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 06:05:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 2285 transitions. [2020-10-13 06:05:14,985 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 2285 transitions. Word has length 195 [2020-10-13 06:05:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:05:14,986 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 2285 transitions. [2020-10-13 06:05:14,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:05:14,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 2285 transitions. [2020-10-13 06:05:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-13 06:05:14,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:05:14,992 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:05:14,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:05:14,992 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:05:14,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:05:14,993 INFO L82 PathProgramCache]: Analyzing trace with hash 470793402, now seen corresponding path program 1 times [2020-10-13 06:05:14,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:05:14,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042177327] [2020-10-13 06:05:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:05:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:15,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:15,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:15,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:15,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:16,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:16,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:18,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:18,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-13 06:05:18,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:05:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3003 [2020-10-13 06:05:18,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:05:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-13 06:05:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 06:05:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:18,460 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-10-13 06:05:18,638 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2020-10-13 06:05:18,860 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 50 [2020-10-13 06:05:19,061 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 46 [2020-10-13 06:05:19,263 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 42 [2020-10-13 06:05:19,462 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 38 [2020-10-13 06:05:19,631 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 34 [2020-10-13 06:05:19,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:05:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:19,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:19,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:05:19,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:19,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:05:19,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:19,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:19,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:19,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:19,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:19,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:05:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:19,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:19,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:19,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:05:19,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:19,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:05:19,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:19,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:19,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 06:05:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:19,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:19,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:19,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 06:05:19,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:19,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:05:19,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:19,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:19,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 06:05:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:19,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:19,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:05:19,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:19,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:05:19,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:19,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:05:19,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:19,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 06:05:19,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 121 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 06:05:19,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042177327] [2020-10-13 06:05:19,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:05:19,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 06:05:19,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421191748] [2020-10-13 06:05:19,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:05:19,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:05:19,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:05:19,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:05:19,945 INFO L87 Difference]: Start difference. First operand 2019 states and 2285 transitions. Second operand 13 states. [2020-10-13 06:05:20,599 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-13 06:05:20,775 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-13 06:05:21,135 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 114 [2020-10-13 06:05:21,478 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 111 [2020-10-13 06:05:21,817 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 108 [2020-10-13 06:05:22,387 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 105 [2020-10-13 06:05:22,890 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2020-10-13 06:05:23,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:05:23,155 INFO L93 Difference]: Finished difference Result 3983 states and 4559 transitions. [2020-10-13 06:05:23,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:05:23,157 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 208 [2020-10-13 06:05:23,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:05:23,165 INFO L225 Difference]: With dead ends: 3983 [2020-10-13 06:05:23,166 INFO L226 Difference]: Without dead ends: 2030 [2020-10-13 06:05:23,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2020-10-13 06:05:23,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2020-10-13 06:05:23,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 2026. [2020-10-13 06:05:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2026 states. [2020-10-13 06:05:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2263 transitions. [2020-10-13 06:05:23,217 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2263 transitions. Word has length 208 [2020-10-13 06:05:23,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:05:23,217 INFO L479 AbstractCegarLoop]: Abstraction has 2026 states and 2263 transitions. [2020-10-13 06:05:23,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:05:23,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2263 transitions. [2020-10-13 06:05:23,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-13 06:05:23,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:05:23,226 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:05:23,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:05:23,226 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:05:23,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:05:23,227 INFO L82 PathProgramCache]: Analyzing trace with hash -115602076, now seen corresponding path program 1 times [2020-10-13 06:05:23,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:05:23,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411496994] [2020-10-13 06:05:23,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:05:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:23,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:24,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:24,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-13 06:05:24,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:05:24,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-10-13 06:05:24,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:24,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:05:24,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 230 [2020-10-13 06:05:24,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 06:05:24,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:24,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:05:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:24,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:24,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:05:24,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:24,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:05:24,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:24,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:24,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:05:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:24,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:24,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:24,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:05:24,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:24,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:05:24,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:24,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:24,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 06:05:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:24,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:24,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:24,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 06:05:24,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:05:24,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:24,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:24,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 06:05:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:24,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:24,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:24,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:05:24,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:24,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:05:24,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:24,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:24,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:24,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:24,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:24,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 06:05:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:24,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:24,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:05:24,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:24,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:05:24,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:05:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:05:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:24,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-13 06:05:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:05:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:05:24,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:05:24,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 06:05:24,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:05:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:05:24,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:05:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:05:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:05:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 06:05:24,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:05:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 204 proven. 5 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-13 06:05:24,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411496994] [2020-10-13 06:05:24,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:05:24,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:05:24,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153120713] [2020-10-13 06:05:24,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:05:24,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:05:24,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:05:24,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:05:24,622 INFO L87 Difference]: Start difference. First operand 2026 states and 2263 transitions. Second operand 5 states. [2020-10-13 06:05:25,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:05:25,554 INFO L93 Difference]: Finished difference Result 3755 states and 4220 transitions. [2020-10-13 06:05:25,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:05:25,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 293 [2020-10-13 06:05:25,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:05:25,560 INFO L225 Difference]: With dead ends: 3755 [2020-10-13 06:05:25,561 INFO L226 Difference]: Without dead ends: 2164 [2020-10-13 06:05:25,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 06:05:25,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2020-10-13 06:05:25,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2026. [2020-10-13 06:05:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2026 states. [2020-10-13 06:05:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2260 transitions. [2020-10-13 06:05:25,609 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2260 transitions. Word has length 293 [2020-10-13 06:05:25,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:05:25,610 INFO L479 AbstractCegarLoop]: Abstraction has 2026 states and 2260 transitions. [2020-10-13 06:05:25,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:05:25,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2260 transitions. [2020-10-13 06:05:25,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-13 06:05:25,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:05:25,619 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:05:25,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:05:25,619 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:05:25,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:05:25,620 INFO L82 PathProgramCache]: Analyzing trace with hash -2002891992, now seen corresponding path program 1 times [2020-10-13 06:05:25,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:05:25,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788954802] [2020-10-13 06:05:25,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:05:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 06:05:25,682 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 06:05:25,682 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 06:05:25,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:05:25,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:05:25 BoogieIcfgContainer [2020-10-13 06:05:25,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 06:05:25,735 INFO L168 Benchmark]: Toolchain (without parser) took 77302.94 ms. Allocated memory was 139.5 MB in the beginning and 1.1 GB in the end (delta: 961.0 MB). Free memory was 100.5 MB in the beginning and 887.7 MB in the end (delta: -787.2 MB). Peak memory consumption was 173.8 MB. Max. memory is 7.1 GB. [2020-10-13 06:05:25,736 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-13 06:05:25,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.46 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 100.3 MB in the beginning and 171.0 MB in the end (delta: -70.7 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-10-13 06:05:25,741 INFO L168 Benchmark]: Boogie Preprocessor took 113.08 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 166.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-10-13 06:05:25,742 INFO L168 Benchmark]: RCFGBuilder took 1189.80 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 166.1 MB in the beginning and 181.0 MB in the end (delta: -14.9 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-10-13 06:05:25,742 INFO L168 Benchmark]: TraceAbstraction took 75238.41 ms. Allocated memory was 237.0 MB in the beginning and 1.1 GB in the end (delta: 863.5 MB). Free memory was 179.5 MB in the beginning and 887.7 MB in the end (delta: -708.1 MB). Peak memory consumption was 155.4 MB. Max. memory is 7.1 GB. [2020-10-13 06:05:25,745 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 756.46 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 100.3 MB in the beginning and 171.0 MB in the end (delta: -70.7 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.08 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 166.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1189.80 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 166.1 MB in the beginning and 181.0 MB in the end (delta: -14.9 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 75238.41 ms. Allocated memory was 237.0 MB in the beginning and 1.1 GB in the end (delta: 863.5 MB). Free memory was 179.5 MB in the beginning and 887.7 MB in the end (delta: -708.1 MB). Peak memory consumption was 155.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 401]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L7] int a= 1; [L8] int d= 4; [L9] int e= 5; [L10] int f= 6; [L11] int c= 3; [L12] int b= 2; [L15] int u = 21; [L16] int v = 22; [L17] int w = 23; [L18] int x = 24; [L19] int y = 25; [L20] int z = 26; [L22] int a17 = 1; [L23] int a7 = 0; [L24] int a20 = 1; [L25] int a8 = 15; [L26] int a12 = 8; [L27] int a16 = 5; [L28] int a21 = 1; [L580] int output = -1; [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L80] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L84] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L92] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L97] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L102] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L108] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L114] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L119] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L124] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L129] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L136] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L140] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L144] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L148] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L152] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L160] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L165] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L173] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L178] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L186] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L189] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L194] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L197] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L203] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L208] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L214] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L218] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L223] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L231] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L238] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L245] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L250] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L256] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L261] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L265] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L268] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L273] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L278] COND FALSE !((((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8))) [L286] COND FALSE !(((!(a7==1)&&(!(a17==1)&&(((((input==3)&&(a21==1))&&(a16==4))&&(a8==15))&&(a12==8))))&&!(a20==1))) [L292] COND FALSE !((((((a12==8)&&(((((a17==1)&&!(a20==1))&&(a16==4))||((((a20==1)&&!(a17==1))&&(a16==5))||((!(a17==1)&&(a20==1))&&(a16==6))))&&(input==3)))&&(a8==15))&&(a21==1))&&!(a7==1))) [L299] COND FALSE !((((!(a7==1)&&(((input==5)&&((((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a12==8)))&&(a21==1))&&(a8==15))) [L306] COND FALSE !(((!(a7==1)&&(((a21==1)&&(((a17==1)&&((a12==8)&&(input==2)))&&!(a20==1)))&&(a16==6)))&&(a8==15))) [L312] COND FALSE !(((!(a17==1)&&((a21==1)&&((!(a20==1)&&((a12==8)&&((input==3)&&!(a7==1))))&&(a8==15))))&&(a16==5))) [L316] COND FALSE !((((a16==5)&&(!(a20==1)&&(((((input==6)&&(a21==1))&&(a17==1))&&!(a7==1))&&(a12==8))))&&(a8==15))) [L318] COND FALSE !((!(a7==1)&&((a17==1)&&(((a16==6)&&(!(a20==1)&&(((input==6)&&(a12==8))&&(a21==1))))&&(a8==15))))) [L324] COND FALSE !(((((a21==1)&&((a8==15)&&((a12==8)&&(!(a7==1)&&(!(a17==1)&&(input==2))))))&&(a16==4))&&(a20==1))) [L329] COND FALSE !(((a8==15)&&(((a16==4)&&((a12==8)&&((!(a20==1)&&(!(a7==1)&&(input==1)))&&!(a17==1))))&&(a21==1)))) [L333] COND TRUE ((a21==1)&&(((a12==8)&&((((a17==1)&&((input==3)&&((a16==5)||(a16==6))))&&!(a7==1))&&(a20==1)))&&(a8==15))) [L334] a17 = 0 [L335] a16 = 4 [L336] return 21; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L80] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L84] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L92] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L97] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L102] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L108] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L114] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L119] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L124] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L129] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L136] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L140] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L144] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L148] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L152] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L160] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L165] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L173] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L178] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L186] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L189] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L194] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L197] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L203] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L208] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L214] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L218] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L223] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L231] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L238] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L245] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L250] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L256] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L261] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L265] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L268] COND TRUE (((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4)) [L269] a20 = 0 [L270] a17 = 1 [L271] a16 = 6 [L272] return 21; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND TRUE (((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6)) [L63] a17 = 0 [L64] return 26; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND TRUE ((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))))))) [L73] a7 = 1 [L74] a17 = 1 [L75] a21 = 0 [L76] a20 = 1 [L77] a8 = 13 [L78] a16 = 5 [L79] return 26; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L80] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L84] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L92] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L97] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L102] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L108] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L114] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L119] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L124] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L129] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L136] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L140] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L144] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L148] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L152] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L160] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L165] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L173] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L178] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L186] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L189] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L194] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L197] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L203] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L208] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L214] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L218] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L223] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L231] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L238] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L245] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L250] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L256] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L261] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L265] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L268] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L273] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L278] COND FALSE !((((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8))) [L286] COND FALSE !(((!(a7==1)&&(!(a17==1)&&(((((input==3)&&(a21==1))&&(a16==4))&&(a8==15))&&(a12==8))))&&!(a20==1))) [L292] COND FALSE !((((((a12==8)&&(((((a17==1)&&!(a20==1))&&(a16==4))||((((a20==1)&&!(a17==1))&&(a16==5))||((!(a17==1)&&(a20==1))&&(a16==6))))&&(input==3)))&&(a8==15))&&(a21==1))&&!(a7==1))) [L299] COND FALSE !((((!(a7==1)&&(((input==5)&&((((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a12==8)))&&(a21==1))&&(a8==15))) [L306] COND FALSE !(((!(a7==1)&&(((a21==1)&&(((a17==1)&&((a12==8)&&(input==2)))&&!(a20==1)))&&(a16==6)))&&(a8==15))) [L312] COND FALSE !(((!(a17==1)&&((a21==1)&&((!(a20==1)&&((a12==8)&&((input==3)&&!(a7==1))))&&(a8==15))))&&(a16==5))) [L316] COND FALSE !((((a16==5)&&(!(a20==1)&&(((((input==6)&&(a21==1))&&(a17==1))&&!(a7==1))&&(a12==8))))&&(a8==15))) [L318] COND FALSE !((!(a7==1)&&((a17==1)&&(((a16==6)&&(!(a20==1)&&(((input==6)&&(a12==8))&&(a21==1))))&&(a8==15))))) [L324] COND FALSE !(((((a21==1)&&((a8==15)&&((a12==8)&&(!(a7==1)&&(!(a17==1)&&(input==2))))))&&(a16==4))&&(a20==1))) [L329] COND FALSE !(((a8==15)&&(((a16==4)&&((a12==8)&&((!(a20==1)&&(!(a7==1)&&(input==1)))&&!(a17==1))))&&(a21==1)))) [L333] COND FALSE !(((a21==1)&&(((a12==8)&&((((a17==1)&&((input==3)&&((a16==5)||(a16==6))))&&!(a7==1))&&(a20==1)))&&(a8==15)))) [L337] COND FALSE !((!(a21==1)&&((a20==1)&&(((a12==8)&&((a8==13)&&((((a16==5)&&!(a17==1))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==2))))&&(a7==1))))) [L345] COND FALSE !(((a7==1)&&((a12==8)&&((((a20==1)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||((a16==4)&&!(a17==1))))&&(input==4)))&&(a8==13))&&!(a21==1))))) [L353] COND FALSE !(((a21==1)&&((((!(a7==1)&&((a8==15)&&(!(a20==1)&&(input==4))))&&(a17==1))&&(a16==5))&&(a12==8)))) [L355] COND FALSE !((((!(a7==1)&&((!(a20==1)&&((a21==1)&&((input==3)&&(a17==1))))&&(a8==15)))&&(a12==8))&&(a16==5))) [L361] COND FALSE !(((((!(a17==1)&&(!(a20==1)&&((a8==15)&&((input==1)&&(a16==5)))))&&(a12==8))&&(a21==1))&&!(a7==1))) [L363] COND FALSE !(((((a21==1)&&((a8==15)&&(((a16==5)&&((a12==8)&&(input==1)))&&(a17==1))))&&!(a7==1))&&!(a20==1))) [L365] COND FALSE !(((!(a21==1)&&((a20==1)&&((((a8==13)&&((a7==1)&&(input==5)))&&(a17==1))&&(a12==8))))&&(a16==5))) [L372] COND FALSE !((((!(a7==1)&&((a21==1)&&((((input==6)&&(a20==1))&&(a8==15))&&!(a17==1))))&&(a12==8))&&(a16==4))) [L377] COND TRUE ((((a20==1)&&(((!(a21==1)&&((a7==1)&&(input==1)))&&(a8==13))&&(a17==1)))&&(a12==8))&&(a16==5)) [L378] a21 = 1 [L379] a16 = 6 [L380] a7 = 0 [L381] return -1; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L80] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L84] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L92] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L97] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L102] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L108] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L114] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L119] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L124] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L129] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L136] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L140] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L144] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L148] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L152] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L160] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L165] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L173] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L178] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L186] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L189] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L194] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L197] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L203] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L208] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L214] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L218] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L223] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L231] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L238] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L245] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L250] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L256] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L261] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L265] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L268] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L273] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L278] COND FALSE !((((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8))) [L286] COND FALSE !(((!(a7==1)&&(!(a17==1)&&(((((input==3)&&(a21==1))&&(a16==4))&&(a8==15))&&(a12==8))))&&!(a20==1))) [L292] COND FALSE !((((((a12==8)&&(((((a17==1)&&!(a20==1))&&(a16==4))||((((a20==1)&&!(a17==1))&&(a16==5))||((!(a17==1)&&(a20==1))&&(a16==6))))&&(input==3)))&&(a8==15))&&(a21==1))&&!(a7==1))) [L299] COND FALSE !((((!(a7==1)&&(((input==5)&&((((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a12==8)))&&(a21==1))&&(a8==15))) [L306] COND FALSE !(((!(a7==1)&&(((a21==1)&&(((a17==1)&&((a12==8)&&(input==2)))&&!(a20==1)))&&(a16==6)))&&(a8==15))) [L312] COND FALSE !(((!(a17==1)&&((a21==1)&&((!(a20==1)&&((a12==8)&&((input==3)&&!(a7==1))))&&(a8==15))))&&(a16==5))) [L316] COND FALSE !((((a16==5)&&(!(a20==1)&&(((((input==6)&&(a21==1))&&(a17==1))&&!(a7==1))&&(a12==8))))&&(a8==15))) [L318] COND FALSE !((!(a7==1)&&((a17==1)&&(((a16==6)&&(!(a20==1)&&(((input==6)&&(a12==8))&&(a21==1))))&&(a8==15))))) [L324] COND FALSE !(((((a21==1)&&((a8==15)&&((a12==8)&&(!(a7==1)&&(!(a17==1)&&(input==2))))))&&(a16==4))&&(a20==1))) [L329] COND FALSE !(((a8==15)&&(((a16==4)&&((a12==8)&&((!(a20==1)&&(!(a7==1)&&(input==1)))&&!(a17==1))))&&(a21==1)))) [L333] COND FALSE !(((a21==1)&&(((a12==8)&&((((a17==1)&&((input==3)&&((a16==5)||(a16==6))))&&!(a7==1))&&(a20==1)))&&(a8==15)))) [L337] COND FALSE !((!(a21==1)&&((a20==1)&&(((a12==8)&&((a8==13)&&((((a16==5)&&!(a17==1))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==2))))&&(a7==1))))) [L345] COND FALSE !(((a7==1)&&((a12==8)&&((((a20==1)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||((a16==4)&&!(a17==1))))&&(input==4)))&&(a8==13))&&!(a21==1))))) [L353] COND FALSE !(((a21==1)&&((((!(a7==1)&&((a8==15)&&(!(a20==1)&&(input==4))))&&(a17==1))&&(a16==5))&&(a12==8)))) [L355] COND FALSE !((((!(a7==1)&&((!(a20==1)&&((a21==1)&&((input==3)&&(a17==1))))&&(a8==15)))&&(a12==8))&&(a16==5))) [L361] COND FALSE !(((((!(a17==1)&&(!(a20==1)&&((a8==15)&&((input==1)&&(a16==5)))))&&(a12==8))&&(a21==1))&&!(a7==1))) [L363] COND FALSE !(((((a21==1)&&((a8==15)&&(((a16==5)&&((a12==8)&&(input==1)))&&(a17==1))))&&!(a7==1))&&!(a20==1))) [L365] COND FALSE !(((!(a21==1)&&((a20==1)&&((((a8==13)&&((a7==1)&&(input==5)))&&(a17==1))&&(a12==8))))&&(a16==5))) [L372] COND FALSE !((((!(a7==1)&&((a21==1)&&((((input==6)&&(a20==1))&&(a8==15))&&!(a17==1))))&&(a12==8))&&(a16==4))) [L377] COND FALSE !(((((a20==1)&&(((!(a21==1)&&((a7==1)&&(input==1)))&&(a8==13))&&(a17==1)))&&(a12==8))&&(a16==5))) [L382] COND FALSE !(((a12==8)&&((input==5)&&((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==15))&&(a16==6))&&(a21==1))||(!(a21==1)&&((a16==4)&&(((a20==1)&&((a7==1)&&(a17==1)))&&(a8==13)))))))) [L391] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L394] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L397] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==15))&&(a12==8))&&(a16==4))&&(a21==1))) [L400] COND TRUE (((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==6))&&(a21==1)) [L401] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 75.1s, OverallIterations: 16, TraceHistogramMax: 6, AutomataDifference: 32.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 404 SDtfs, 5937 SDslu, 647 SDs, 0 SdLazy, 13265 SolverSat, 1112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 366 GetRequests, 131 SyntacticMatches, 9 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 21.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2143occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 652 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 39.3s InterpolantComputationTime, 2502 NumberOfCodeBlocks, 2502 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2192 ConstructedInterpolants, 0 QuantifiedInterpolants, 4357441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 1503/1534 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...