/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:28:47,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:28:47,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:28:47,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:28:47,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:28:47,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:28:47,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:28:47,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:28:47,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:28:47,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:28:47,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:28:47,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:28:47,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:28:47,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:28:47,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:28:47,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:28:47,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:28:47,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:28:47,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:28:47,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:28:47,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:28:47,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:28:47,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:28:47,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:28:47,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:28:47,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:28:47,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:28:47,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:28:47,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:28:47,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:28:47,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:28:47,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:28:47,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:28:47,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:28:47,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:28:47,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:28:47,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:28:47,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:28:47,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:28:47,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:28:47,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:28:47,146 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 [2020-09-21 12:28:47,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:28:47,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:28:47,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:28:47,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:28:47,174 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:28:47,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:28:47,175 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:28:47,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:28:47,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:28:47,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:28:47,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:28:47,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:28:47,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:28:47,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:28:47,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:28:47,177 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:28:47,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:28:47,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:28:47,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:28:47,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:28:47,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:28:47,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:28:47,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:28:47,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:28:47,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:28:47,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:28:47,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:28:47,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:28:47,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:28:47,180 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:28:47,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:28:47,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:28:47,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:28:47,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:28:47,647 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:28:47,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-21 12:28:47,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c75a9693/14ffd103ec224a468ebe9ec6917a16ac/FLAGa8ca85f48 [2020-09-21 12:28:48,408 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:28:48,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-21 12:28:48,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c75a9693/14ffd103ec224a468ebe9ec6917a16ac/FLAGa8ca85f48 [2020-09-21 12:28:48,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c75a9693/14ffd103ec224a468ebe9ec6917a16ac [2020-09-21 12:28:48,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:28:48,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:28:48,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:28:48,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:28:48,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:28:48,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:28:48" (1/1) ... [2020-09-21 12:28:48,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18153661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:48, skipping insertion in model container [2020-09-21 12:28:48,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:28:48" (1/1) ... [2020-09-21 12:28:48,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:28:48,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:28:49,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:28:49,270 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:28:49,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:28:49,539 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:28:49,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:49 WrapperNode [2020-09-21 12:28:49,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:28:49,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:28:49,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:28:49,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:28:49,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:49" (1/1) ... [2020-09-21 12:28:49,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:49" (1/1) ... [2020-09-21 12:28:49,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:49" (1/1) ... [2020-09-21 12:28:49,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:49" (1/1) ... [2020-09-21 12:28:49,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:49" (1/1) ... [2020-09-21 12:28:49,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:49" (1/1) ... [2020-09-21 12:28:49,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:49" (1/1) ... [2020-09-21 12:28:49,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:28:49,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:28:49,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:28:49,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:28:49,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:49" (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 [2020-09-21 12:28:49,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:28:49,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:28:49,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:28:49,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:28:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:28:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:28:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:28:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:28:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:28:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:28:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:28:50,922 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:28:50,922 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:28:50,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:28:50 BoogieIcfgContainer [2020-09-21 12:28:50,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:28:50,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:28:50,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:28:50,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:28:50,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:28:48" (1/3) ... [2020-09-21 12:28:50,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2f4aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:28:50, skipping insertion in model container [2020-09-21 12:28:50,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:49" (2/3) ... [2020-09-21 12:28:50,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2f4aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:28:50, skipping insertion in model container [2020-09-21 12:28:50,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:28:50" (3/3) ... [2020-09-21 12:28:50,945 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label56.c [2020-09-21 12:28:50,957 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:28:50,971 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:28:50,993 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:28:51,023 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:28:51,024 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:28:51,024 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:28:51,024 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:28:51,024 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:28:51,024 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:28:51,024 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:28:51,024 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:28:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-09-21 12:28:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-21 12:28:51,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:51,063 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, 1] [2020-09-21 12:28:51,064 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:51,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:51,072 INFO L82 PathProgramCache]: Analyzing trace with hash -503641322, now seen corresponding path program 1 times [2020-09-21 12:28:51,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:51,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856342286] [2020-09-21 12:28:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:51,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:51,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:52,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:52,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-21 12:28:52,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:28:52,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:28:52,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:52,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:28:52,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:28:52,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-21 12:28:52,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-21 12:28:52,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:52,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:52,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:52,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:52,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:52,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:28:52,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:28:52,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:28:52,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856342286] [2020-09-21 12:28:52,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:28:52,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:28:52,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597581932] [2020-09-21 12:28:52,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:28:52,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:52,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:28:52,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:28:52,698 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 4 states. [2020-09-21 12:28:54,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:54,352 INFO L93 Difference]: Finished difference Result 557 states and 955 transitions. [2020-09-21 12:28:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:28:54,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-09-21 12:28:54,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:54,376 INFO L225 Difference]: With dead ends: 557 [2020-09-21 12:28:54,377 INFO L226 Difference]: Without dead ends: 286 [2020-09-21 12:28:54,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:28:54,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-21 12:28:54,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 282. [2020-09-21 12:28:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-09-21 12:28:54,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 392 transitions. [2020-09-21 12:28:54,482 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 392 transitions. Word has length 82 [2020-09-21 12:28:54,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:54,483 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 392 transitions. [2020-09-21 12:28:54,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:28:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 392 transitions. [2020-09-21 12:28:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-21 12:28:54,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:54,496 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, 1] [2020-09-21 12:28:54,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:28:54,497 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:54,497 INFO L82 PathProgramCache]: Analyzing trace with hash -374885071, now seen corresponding path program 1 times [2020-09-21 12:28:54,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:54,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371854019] [2020-09-21 12:28:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:54,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:54,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:55,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:55,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:55,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-21 12:28:55,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:55,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-21 12:28:55,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:55,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:55,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:28:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 12:28:55,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:55,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:55,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:55,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:55,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:55,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:55,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:28:55,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:55,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:55,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:55,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:55,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:55,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:28:55,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:55,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:28:55,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:55,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:28:55,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:28:55,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371854019] [2020-09-21 12:28:55,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:55,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:28:55,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969904855] [2020-09-21 12:28:55,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:28:55,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:55,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:28:55,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:28:55,810 INFO L87 Difference]: Start difference. First operand 282 states and 392 transitions. Second operand 5 states. [2020-09-21 12:28:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:56,969 INFO L93 Difference]: Finished difference Result 836 states and 1187 transitions. [2020-09-21 12:28:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:28:56,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-09-21 12:28:56,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:56,975 INFO L225 Difference]: With dead ends: 836 [2020-09-21 12:28:56,975 INFO L226 Difference]: Without dead ends: 560 [2020-09-21 12:28:56,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:28:56,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-09-21 12:28:57,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 556. [2020-09-21 12:28:57,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-09-21 12:28:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 767 transitions. [2020-09-21 12:28:57,022 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 767 transitions. Word has length 90 [2020-09-21 12:28:57,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:57,023 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 767 transitions. [2020-09-21 12:28:57,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:28:57,023 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 767 transitions. [2020-09-21 12:28:57,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-21 12:28:57,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:57,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:57,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:28:57,030 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:57,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:57,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2137756883, now seen corresponding path program 1 times [2020-09-21 12:28:57,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:57,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670711764] [2020-09-21 12:28:57,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:57,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:57,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:58,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:58,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:28:58,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:58,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-21 12:28:58,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-21 12:28:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:28:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:58,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:58,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:58,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:58,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:58,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:28:58,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:58,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:58,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:58,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:58,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:28:58,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:58,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:28:58,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:58,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:58,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:58,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:28:58,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:28:58,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670711764] [2020-09-21 12:28:58,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:58,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:28:58,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858964223] [2020-09-21 12:28:58,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:28:58,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:58,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:28:58,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:28:58,537 INFO L87 Difference]: Start difference. First operand 556 states and 767 transitions. Second operand 6 states. [2020-09-21 12:28:59,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:59,762 INFO L93 Difference]: Finished difference Result 1186 states and 1689 transitions. [2020-09-21 12:28:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:28:59,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-09-21 12:28:59,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:59,767 INFO L225 Difference]: With dead ends: 1186 [2020-09-21 12:28:59,767 INFO L226 Difference]: Without dead ends: 560 [2020-09-21 12:28:59,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-09-21 12:28:59,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 556. [2020-09-21 12:28:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-09-21 12:28:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 763 transitions. [2020-09-21 12:28:59,798 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 763 transitions. Word has length 107 [2020-09-21 12:28:59,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:59,798 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 763 transitions. [2020-09-21 12:28:59,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:28:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 763 transitions. [2020-09-21 12:28:59,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-21 12:28:59,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:59,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:59,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:28:59,804 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:59,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:59,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1171851001, now seen corresponding path program 1 times [2020-09-21 12:28:59,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:59,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951935322] [2020-09-21 12:28:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:59,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:59,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:00,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:00,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-21 12:29:00,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:00,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-09-21 12:29:00,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:00,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:29:00,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:29:00,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:29:00,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:00,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:00,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:00,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:00,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:00,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:29:00,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:29:00,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:01,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:01,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:01,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:01,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:29:01,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:01,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-21 12:29:01,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:01,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-21 12:29:01,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:01,160 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:29:01,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951935322] [2020-09-21 12:29:01,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:29:01,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:29:01,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631081594] [2020-09-21 12:29:01,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:01,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:01,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:01,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:01,164 INFO L87 Difference]: Start difference. First operand 556 states and 763 transitions. Second operand 7 states. [2020-09-21 12:29:02,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:02,765 INFO L93 Difference]: Finished difference Result 1688 states and 2439 transitions. [2020-09-21 12:29:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:29:02,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-09-21 12:29:02,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:02,776 INFO L225 Difference]: With dead ends: 1688 [2020-09-21 12:29:02,776 INFO L226 Difference]: Without dead ends: 1138 [2020-09-21 12:29:02,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:29:02,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2020-09-21 12:29:02,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1114. [2020-09-21 12:29:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2020-09-21 12:29:02,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1504 transitions. [2020-09-21 12:29:02,873 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1504 transitions. Word has length 113 [2020-09-21 12:29:02,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:02,873 INFO L479 AbstractCegarLoop]: Abstraction has 1114 states and 1504 transitions. [2020-09-21 12:29:02,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:02,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1504 transitions. [2020-09-21 12:29:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-21 12:29:02,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:02,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:02,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:29:02,883 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:02,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:02,883 INFO L82 PathProgramCache]: Analyzing trace with hash 948910926, now seen corresponding path program 1 times [2020-09-21 12:29:02,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:02,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752735839] [2020-09-21 12:29:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:03,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:03,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:03,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:03,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-21 12:29:03,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:29:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-21 12:29:03,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:29:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:29:03,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:04,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:04,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:04,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:04,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:04,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:04,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:29:04,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:04,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:04,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:04,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:04,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:04,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:04,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:29:04,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:04,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:29:04,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:04,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:04,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:04,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:29:04,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:04,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:29:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:04,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:04,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:29:04,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:04,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-21 12:29:04,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-21 12:29:04,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:29:04,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752735839] [2020-09-21 12:29:04,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:04,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:04,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548992804] [2020-09-21 12:29:04,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:04,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:04,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:04,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:04,233 INFO L87 Difference]: Start difference. First operand 1114 states and 1504 transitions. Second operand 7 states. [2020-09-21 12:29:05,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:05,839 INFO L93 Difference]: Finished difference Result 2639 states and 3624 transitions. [2020-09-21 12:29:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:29:05,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-09-21 12:29:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:05,852 INFO L225 Difference]: With dead ends: 2639 [2020-09-21 12:29:05,852 INFO L226 Difference]: Without dead ends: 1531 [2020-09-21 12:29:05,857 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 [2020-09-21 12:29:05,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-09-21 12:29:05,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1253. [2020-09-21 12:29:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1253 states. [2020-09-21 12:29:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1677 transitions. [2020-09-21 12:29:05,908 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1677 transitions. Word has length 124 [2020-09-21 12:29:05,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:05,909 INFO L479 AbstractCegarLoop]: Abstraction has 1253 states and 1677 transitions. [2020-09-21 12:29:05,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1677 transitions. [2020-09-21 12:29:05,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-21 12:29:05,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:05,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:05,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:29:05,915 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:05,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:05,915 INFO L82 PathProgramCache]: Analyzing trace with hash -91390250, now seen corresponding path program 1 times [2020-09-21 12:29:05,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:05,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192097252] [2020-09-21 12:29:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:05,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:06,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:06,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:06,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-21 12:29:06,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:29:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:29:06,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-21 12:29:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 12:29:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:07,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:07,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:07,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:07,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:07,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:07,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:29:07,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:07,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:07,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:07,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:07,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:07,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:07,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:07,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:29:07,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:07,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:07,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:07,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:07,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:07,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:29:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:07,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:07,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:29:07,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:07,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:29:07,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:29:07,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 12:29:07,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192097252] [2020-09-21 12:29:07,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:07,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:29:07,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881817217] [2020-09-21 12:29:07,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:29:07,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:07,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:29:07,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:29:07,230 INFO L87 Difference]: Start difference. First operand 1253 states and 1677 transitions. Second operand 5 states. [2020-09-21 12:29:08,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:08,412 INFO L93 Difference]: Finished difference Result 2911 states and 3901 transitions. [2020-09-21 12:29:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:29:08,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-21 12:29:08,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:08,424 INFO L225 Difference]: With dead ends: 2911 [2020-09-21 12:29:08,424 INFO L226 Difference]: Without dead ends: 1664 [2020-09-21 12:29:08,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:29:08,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-09-21 12:29:08,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1114. [2020-09-21 12:29:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2020-09-21 12:29:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1404 transitions. [2020-09-21 12:29:08,482 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1404 transitions. Word has length 128 [2020-09-21 12:29:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:08,484 INFO L479 AbstractCegarLoop]: Abstraction has 1114 states and 1404 transitions. [2020-09-21 12:29:08,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:29:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1404 transitions. [2020-09-21 12:29:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-21 12:29:08,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:08,488 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:08,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:29:08,489 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:08,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:08,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1817929918, now seen corresponding path program 1 times [2020-09-21 12:29:08,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:08,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081101849] [2020-09-21 12:29:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:08,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:09,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:09,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-21 12:29:09,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:09,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-09-21 12:29:09,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:09,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:29:09,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:29:09,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:29:09,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:29:09,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:09,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:09,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:09,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:09,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:09,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:29:09,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:09,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:09,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:09,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:29:09,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:09,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:09,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:09,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:09,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:09,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:09,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 12:29:09,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:09,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:09,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:09,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:29:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:09,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:29:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:09,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:09,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:29:09,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:09,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:29:09,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:29:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:09,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 12:29:09,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081101849] [2020-09-21 12:29:09,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:09,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:09,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020799301] [2020-09-21 12:29:09,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:09,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:09,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:09,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:09,680 INFO L87 Difference]: Start difference. First operand 1114 states and 1404 transitions. Second operand 7 states. [2020-09-21 12:29:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:11,287 INFO L93 Difference]: Finished difference Result 2663 states and 3372 transitions. [2020-09-21 12:29:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:29:11,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-21 12:29:11,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:11,296 INFO L225 Difference]: With dead ends: 2663 [2020-09-21 12:29:11,296 INFO L226 Difference]: Without dead ends: 1416 [2020-09-21 12:29:11,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:29:11,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2020-09-21 12:29:11,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1259. [2020-09-21 12:29:11,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-09-21 12:29:11,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1536 transitions. [2020-09-21 12:29:11,342 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1536 transitions. Word has length 140 [2020-09-21 12:29:11,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:11,342 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1536 transitions. [2020-09-21 12:29:11,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:11,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1536 transitions. [2020-09-21 12:29:11,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-21 12:29:11,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:11,347 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:11,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:29:11,347 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:11,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:11,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1037292775, now seen corresponding path program 1 times [2020-09-21 12:29:11,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:11,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629723093] [2020-09-21 12:29:11,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:11,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:12,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:12,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-21 12:29:12,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:12,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-21 12:29:12,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:29:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:29:12,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:12,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:12,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:12,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:12,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:12,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:12,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:29:12,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:12,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:12,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:12,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:12,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:12,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:12,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:12,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:29:12,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:12,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:29:12,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:12,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:12,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:12,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:29:12,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:12,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:29:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:12,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:12,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:12,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:12,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:12,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 12:29:12,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:12,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:12,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:12,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:29:12,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:12,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-21 12:29:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:12,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:12,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:12,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:29:12,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:12,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:29:12,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:12,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:12,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:29:12,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:12,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 66 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-21 12:29:12,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629723093] [2020-09-21 12:29:12,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:12,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:12,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370041118] [2020-09-21 12:29:12,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:12,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:12,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:12,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:12,722 INFO L87 Difference]: Start difference. First operand 1259 states and 1536 transitions. Second operand 7 states. [2020-09-21 12:29:14,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:14,192 INFO L93 Difference]: Finished difference Result 3102 states and 3840 transitions. [2020-09-21 12:29:14,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:29:14,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-21 12:29:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:14,207 INFO L225 Difference]: With dead ends: 3102 [2020-09-21 12:29:14,207 INFO L226 Difference]: Without dead ends: 1849 [2020-09-21 12:29:14,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:29:14,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2020-09-21 12:29:14,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1827. [2020-09-21 12:29:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2020-09-21 12:29:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2202 transitions. [2020-09-21 12:29:14,261 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2202 transitions. Word has length 148 [2020-09-21 12:29:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:14,262 INFO L479 AbstractCegarLoop]: Abstraction has 1827 states and 2202 transitions. [2020-09-21 12:29:14,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2202 transitions. [2020-09-21 12:29:14,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-21 12:29:14,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:14,268 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:14,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:29:14,268 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:14,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:14,269 INFO L82 PathProgramCache]: Analyzing trace with hash -623709673, now seen corresponding path program 1 times [2020-09-21 12:29:14,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:14,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95576963] [2020-09-21 12:29:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:14,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:14,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:15,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:15,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-21 12:29:15,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-21 12:29:15,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:29:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:29:15,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:15,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:15,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:15,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:15,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:15,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:29:15,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:15,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:15,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:15,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:15,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:15,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:15,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:29:15,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:15,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:29:15,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:29:15,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:15,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:29:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:15,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:15,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:15,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:15,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:15,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:29:15,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:29:15,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:15,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 12:29:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:15,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:15,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:15,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:29:15,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:15,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-21 12:29:15,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:29:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:15,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 12:29:15,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95576963] [2020-09-21 12:29:15,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:15,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:15,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271095187] [2020-09-21 12:29:15,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:15,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:15,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:15,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:15,729 INFO L87 Difference]: Start difference. First operand 1827 states and 2202 transitions. Second operand 7 states. [2020-09-21 12:29:17,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:17,328 INFO L93 Difference]: Finished difference Result 3821 states and 4625 transitions. [2020-09-21 12:29:17,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:29:17,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-21 12:29:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:17,336 INFO L225 Difference]: With dead ends: 3821 [2020-09-21 12:29:17,336 INFO L226 Difference]: Without dead ends: 1849 [2020-09-21 12:29:17,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:29:17,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2020-09-21 12:29:17,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1823. [2020-09-21 12:29:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1823 states. [2020-09-21 12:29:17,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2067 transitions. [2020-09-21 12:29:17,392 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2067 transitions. Word has length 151 [2020-09-21 12:29:17,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:17,393 INFO L479 AbstractCegarLoop]: Abstraction has 1823 states and 2067 transitions. [2020-09-21 12:29:17,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:17,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2067 transitions. [2020-09-21 12:29:17,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-21 12:29:17,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:17,399 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:17,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:29:17,399 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:17,400 INFO L82 PathProgramCache]: Analyzing trace with hash 752268368, now seen corresponding path program 1 times [2020-09-21 12:29:17,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:17,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843098919] [2020-09-21 12:29:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:17,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:18,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:18,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-21 12:29:18,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:29:18,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-09-21 12:29:18,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:29:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:29:18,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:18,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:18,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:18,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:18,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:18,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:29:18,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:18,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:18,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:18,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:29:18,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:29:18,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:29:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:18,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:29:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:18,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:18,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:18,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:29:18,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:18,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 12:29:18,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-21 12:29:18,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:18,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 12:29:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:18,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:18,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:18,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:18,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:18,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:29:18,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:29:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:18,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:18,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 12:29:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:18,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:18,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:29:18,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:18,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:29:18,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:29:18,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:18,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 93 proven. 37 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-21 12:29:18,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843098919] [2020-09-21 12:29:18,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:18,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:18,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723777072] [2020-09-21 12:29:18,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:18,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:18,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:18,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:18,844 INFO L87 Difference]: Start difference. First operand 1823 states and 2067 transitions. Second operand 7 states. [2020-09-21 12:29:20,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:20,088 INFO L93 Difference]: Finished difference Result 4470 states and 5153 transitions. [2020-09-21 12:29:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:29:20,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-09-21 12:29:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:20,101 INFO L225 Difference]: With dead ends: 4470 [2020-09-21 12:29:20,101 INFO L226 Difference]: Without dead ends: 2653 [2020-09-21 12:29:20,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:29:20,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2020-09-21 12:29:20,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 2103. [2020-09-21 12:29:20,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2103 states. [2020-09-21 12:29:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 2416 transitions. [2020-09-21 12:29:20,166 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 2416 transitions. Word has length 174 [2020-09-21 12:29:20,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:20,166 INFO L479 AbstractCegarLoop]: Abstraction has 2103 states and 2416 transitions. [2020-09-21 12:29:20,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:20,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 2416 transitions. [2020-09-21 12:29:20,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-21 12:29:20,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:20,173 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:20,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:29:20,174 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:20,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:20,174 INFO L82 PathProgramCache]: Analyzing trace with hash 300051243, now seen corresponding path program 1 times [2020-09-21 12:29:20,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:20,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664147942] [2020-09-21 12:29:20,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:20,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:20,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:21,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:21,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-21 12:29:21,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:29:21,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-09-21 12:29:21,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 12:29:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:29:21,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:21,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:21,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:21,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:21,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:21,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:21,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:29:21,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:21,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:21,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:21,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:21,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:21,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:21,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 12:29:21,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:21,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 12:29:21,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:21,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:21,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-21 12:29:21,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:21,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 12:29:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:21,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:21,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:21,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:21,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:21,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:29:21,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:29:21,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-21 12:29:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:21,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:21,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:21,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:29:21,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:21,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:29:21,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:29:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:21,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 98 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-21 12:29:21,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664147942] [2020-09-21 12:29:21,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:21,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:21,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618517615] [2020-09-21 12:29:21,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:21,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:21,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:21,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:21,719 INFO L87 Difference]: Start difference. First operand 2103 states and 2416 transitions. Second operand 7 states. [2020-09-21 12:29:23,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:23,202 INFO L93 Difference]: Finished difference Result 4562 states and 5471 transitions. [2020-09-21 12:29:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:29:23,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-09-21 12:29:23,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:23,214 INFO L225 Difference]: With dead ends: 4562 [2020-09-21 12:29:23,215 INFO L226 Difference]: Without dead ends: 2465 [2020-09-21 12:29:23,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:29:23,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2020-09-21 12:29:23,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2387. [2020-09-21 12:29:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2387 states. [2020-09-21 12:29:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 2651 transitions. [2020-09-21 12:29:23,279 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 2651 transitions. Word has length 173 [2020-09-21 12:29:23,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:23,280 INFO L479 AbstractCegarLoop]: Abstraction has 2387 states and 2651 transitions. [2020-09-21 12:29:23,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:23,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 2651 transitions. [2020-09-21 12:29:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-21 12:29:23,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:23,288 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:23,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:29:23,288 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:23,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:23,288 INFO L82 PathProgramCache]: Analyzing trace with hash 502491799, now seen corresponding path program 1 times [2020-09-21 12:29:23,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:23,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362073886] [2020-09-21 12:29:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:23,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:23,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-21 12:29:23,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:23,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-09-21 12:29:23,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:23,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-21 12:29:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:29:23,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:24,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:24,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:24,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:24,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:24,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:24,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:29:24,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:24,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:24,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:24,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:24,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:29:24,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:24,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:29:24,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:24,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:29:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:24,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:24,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:24,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 12:29:24,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:29:24,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:24,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 12:29:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:24,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:24,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:29:24,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:24,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:29:24,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:24,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:24,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:29:24,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:24,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 12:29:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:24,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:24,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:24,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:24,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:24,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:29:24,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:29:24,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:24,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-21 12:29:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:24,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:24,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:29:24,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:24,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 12:29:24,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:29:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 178 proven. 14 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-09-21 12:29:24,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362073886] [2020-09-21 12:29:24,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:24,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:24,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075158743] [2020-09-21 12:29:24,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:24,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:24,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:24,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:24,402 INFO L87 Difference]: Start difference. First operand 2387 states and 2651 transitions. Second operand 7 states. [2020-09-21 12:29:25,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:25,793 INFO L93 Difference]: Finished difference Result 5056 states and 5633 transitions. [2020-09-21 12:29:25,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:29:25,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-09-21 12:29:25,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:25,804 INFO L225 Difference]: With dead ends: 5056 [2020-09-21 12:29:25,804 INFO L226 Difference]: Without dead ends: 2675 [2020-09-21 12:29:25,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:29:25,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2020-09-21 12:29:25,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 2665. [2020-09-21 12:29:25,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2665 states. [2020-09-21 12:29:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 2937 transitions. [2020-09-21 12:29:25,870 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 2937 transitions. Word has length 224 [2020-09-21 12:29:25,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:25,870 INFO L479 AbstractCegarLoop]: Abstraction has 2665 states and 2937 transitions. [2020-09-21 12:29:25,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:25,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 2937 transitions. [2020-09-21 12:29:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-21 12:29:25,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:25,880 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2020-09-21 12:29:25,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:29:25,880 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:25,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:25,881 INFO L82 PathProgramCache]: Analyzing trace with hash -443844938, now seen corresponding path program 1 times [2020-09-21 12:29:25,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:25,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572706292] [2020-09-21 12:29:25,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:26,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:26,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:26,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-21 12:29:26,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:26,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-09-21 12:29:26,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-09-21 12:29:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:29:26,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:26,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:26,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:26,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:26,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:26,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:29:26,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:26,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:26,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:26,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:26,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 12:29:26,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:26,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:29:26,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:26,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:26,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:29:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:26,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:26,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:26,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-21 12:29:26,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 12:29:26,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:29:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-21 12:29:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:26,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:26,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:26,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:26,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:29:26,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:29:26,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:27,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-21 12:29:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:27,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:27,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:27,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:29:27,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:29:27,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:29:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 197 proven. 14 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-09-21 12:29:27,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572706292] [2020-09-21 12:29:27,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:27,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:27,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185593101] [2020-09-21 12:29:27,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:27,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:27,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:27,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:27,146 INFO L87 Difference]: Start difference. First operand 2665 states and 2937 transitions. Second operand 7 states. [2020-09-21 12:29:28,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:28,941 INFO L93 Difference]: Finished difference Result 5553 states and 6305 transitions. [2020-09-21 12:29:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:29:28,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-09-21 12:29:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:28,954 INFO L225 Difference]: With dead ends: 5553 [2020-09-21 12:29:28,954 INFO L226 Difference]: Without dead ends: 2894 [2020-09-21 12:29:28,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:29:28,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-09-21 12:29:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2804. [2020-09-21 12:29:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2804 states. [2020-09-21 12:29:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 3077 transitions. [2020-09-21 12:29:29,024 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 3077 transitions. Word has length 254 [2020-09-21 12:29:29,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:29,025 INFO L479 AbstractCegarLoop]: Abstraction has 2804 states and 3077 transitions. [2020-09-21 12:29:29,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 3077 transitions. [2020-09-21 12:29:29,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-21 12:29:29,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:29,034 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-21 12:29:29,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:29:29,035 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:29,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:29,035 INFO L82 PathProgramCache]: Analyzing trace with hash 635776599, now seen corresponding path program 1 times [2020-09-21 12:29:29,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:29,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068806760] [2020-09-21 12:29:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:29,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:29,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:29,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-21 12:29:29,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-09-21 12:29:29,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-09-21 12:29:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:29:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:29,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:29,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:29,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:29,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:29,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:29:29,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:29,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:29,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:29,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:29,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:29,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:29,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:29,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:29:29,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:29:29,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:29,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:29:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:29,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:29,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 12:29:29,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:29,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:29:29,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:29,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:29,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 12:29:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:29,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:30,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:30,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 12:29:30,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:30,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-21 12:29:30,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:29:30,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:30,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-21 12:29:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:30,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:30,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:30,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 12:29:30,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:29:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-21 12:29:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:30,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:30,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:30,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:29:30,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 12:29:30,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:29:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 210 proven. 14 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-09-21 12:29:30,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068806760] [2020-09-21 12:29:30,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:30,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:30,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731360925] [2020-09-21 12:29:30,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:30,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:30,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:30,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:30,232 INFO L87 Difference]: Start difference. First operand 2804 states and 3077 transitions. Second operand 7 states. [2020-09-21 12:29:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:32,065 INFO L93 Difference]: Finished difference Result 5696 states and 6425 transitions. [2020-09-21 12:29:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:29:32,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-09-21 12:29:32,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:32,078 INFO L225 Difference]: With dead ends: 5696 [2020-09-21 12:29:32,078 INFO L226 Difference]: Without dead ends: 2757 [2020-09-21 12:29:32,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:29:32,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2020-09-21 12:29:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2667. [2020-09-21 12:29:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2667 states. [2020-09-21 12:29:32,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 2929 transitions. [2020-09-21 12:29:32,152 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 2929 transitions. Word has length 256 [2020-09-21 12:29:32,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:32,152 INFO L479 AbstractCegarLoop]: Abstraction has 2667 states and 2929 transitions. [2020-09-21 12:29:32,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:32,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 2929 transitions. [2020-09-21 12:29:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-21 12:29:32,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:32,162 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, 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, 1, 1, 1] [2020-09-21 12:29:32,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:29:32,162 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:32,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:32,163 INFO L82 PathProgramCache]: Analyzing trace with hash 377203419, now seen corresponding path program 1 times [2020-09-21 12:29:32,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:32,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282881221] [2020-09-21 12:29:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:29:32,271 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:29:32,271 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:29:32,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 12:29:32,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:29:32 BoogieIcfgContainer [2020-09-21 12:29:32,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:29:32,336 INFO L168 Benchmark]: Toolchain (without parser) took 43660.49 ms. Allocated memory was 140.5 MB in the beginning and 717.2 MB in the end (delta: 576.7 MB). Free memory was 102.3 MB in the beginning and 496.2 MB in the end (delta: -393.9 MB). Peak memory consumption was 182.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:29:32,336 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:29:32,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 861.31 ms. Allocated memory was 140.5 MB in the beginning and 206.6 MB in the end (delta: 66.1 MB). Free memory was 101.9 MB in the beginning and 172.7 MB in the end (delta: -70.8 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:29:32,338 INFO L168 Benchmark]: Boogie Preprocessor took 102.24 ms. Allocated memory is still 206.6 MB. Free memory was 172.7 MB in the beginning and 167.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:29:32,339 INFO L168 Benchmark]: RCFGBuilder took 1290.18 ms. Allocated memory was 206.6 MB in the beginning and 239.6 MB in the end (delta: 33.0 MB). Free memory was 167.8 MB in the beginning and 180.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:29:32,339 INFO L168 Benchmark]: TraceAbstraction took 41396.59 ms. Allocated memory was 239.6 MB in the beginning and 717.2 MB in the end (delta: 477.6 MB). Free memory was 180.7 MB in the beginning and 496.2 MB in the end (delta: -315.5 MB). Peak memory consumption was 162.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:29:32,343 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 861.31 ms. Allocated memory was 140.5 MB in the beginning and 206.6 MB in the end (delta: 66.1 MB). Free memory was 101.9 MB in the beginning and 172.7 MB in the end (delta: -70.8 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.24 ms. Allocated memory is still 206.6 MB. Free memory was 172.7 MB in the beginning and 167.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1290.18 ms. Allocated memory was 206.6 MB in the beginning and 239.6 MB in the end (delta: 33.0 MB). Free memory was 167.8 MB in the beginning and 180.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41396.59 ms. Allocated memory was 239.6 MB in the beginning and 717.2 MB in the end (delta: 477.6 MB). Free memory was 180.7 MB in the beginning and 496.2 MB in the end (delta: -315.5 MB). Peak memory consumption was 162.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 404]: 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 TRUE ((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1))) [L224] a21 = 1 [L225] a8 = 14 [L226] a16 = 4 [L227] a20 = 0 [L228] a7 = 0 [L229] a17 = 0 [L230] 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 FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==6))&&(a21==1))) [L403] COND TRUE ((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1)) [L404] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.2s, OverallIterations: 15, TraceHistogramMax: 6, AutomataDifference: 21.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 422 SDtfs, 4954 SDslu, 531 SDs, 0 SdLazy, 10536 SolverSat, 1382 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 253 GetRequests, 139 SyntacticMatches, 5 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2804occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 14 MinimizatonAttempts, 1887 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 2431 NumberOfCodeBlocks, 2431 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2150 ConstructedInterpolants, 0 QuantifiedInterpolants, 1048448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 1590/1727 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...