/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:24:27,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:24:27,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:24:28,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:24:28,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:24:28,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:24:28,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:24:28,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:24:28,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:24:28,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:24:28,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:24:28,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:24:28,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:24:28,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:24:28,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:24:28,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:24:28,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:24:28,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:24:28,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:24:28,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:24:28,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:24:28,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:24:28,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:24:28,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:24:28,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:24:28,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:24:28,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:24:28,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:24:28,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:24:28,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:24:28,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:24:28,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:24:28,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:24:28,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:24:28,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:24:28,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:24:28,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:24:28,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:24:28,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:24:28,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:24:28,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:24:28,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:24:28,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:24:28,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:24:28,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:24:28,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:24:28,172 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:24:28,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:24:28,172 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:24:28,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:24:28,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:24:28,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:24:28,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:24:28,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:24:28,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:24:28,175 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:24:28,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:24:28,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:24:28,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:24:28,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:24:28,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:24:28,176 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:24:28,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:24:28,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:24:28,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:24:28,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:24:28,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:24:28,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:24:28,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:24:28,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:24:28,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:24:28,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:24:28,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:24:28,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:24:28,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:24:28,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:24:28,514 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:24:28,515 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label44.c [2020-10-13 08:24:28,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc59b2a52/a0bb6c6efad44647bb25bd21937c2f46/FLAG1c4518dc2 [2020-10-13 08:24:29,432 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:24:29,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label44.c [2020-10-13 08:24:29,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc59b2a52/a0bb6c6efad44647bb25bd21937c2f46/FLAG1c4518dc2 [2020-10-13 08:24:29,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc59b2a52/a0bb6c6efad44647bb25bd21937c2f46 [2020-10-13 08:24:29,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:24:29,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:24:29,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:24:29,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:24:29,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:24:29,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:24:29" (1/1) ... [2020-10-13 08:24:29,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ced97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:24:29, skipping insertion in model container [2020-10-13 08:24:29,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:24:29" (1/1) ... [2020-10-13 08:24:29,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:24:30,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:24:31,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:24:31,742 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:24:32,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:24:32,412 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:24:32,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:24:32 WrapperNode [2020-10-13 08:24:32,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:24:32,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:24:32,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:24:32,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:24:32,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:24:32" (1/1) ... [2020-10-13 08:24:32,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:24:32" (1/1) ... [2020-10-13 08:24:32,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:24:32" (1/1) ... [2020-10-13 08:24:32,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:24:32" (1/1) ... [2020-10-13 08:24:32,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:24:32" (1/1) ... [2020-10-13 08:24:32,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:24:32" (1/1) ... [2020-10-13 08:24:32,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:24:32" (1/1) ... [2020-10-13 08:24:32,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:24:32,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:24:32,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:24:32,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:24:32,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:24:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:24:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:24:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:24:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:24:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:24:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:24:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:24:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:24:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:24:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:24:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:24:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:24:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:24:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:24:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:24:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:24:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:24:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:24:38,146 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:24:38,146 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:24:38,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:24:38 BoogieIcfgContainer [2020-10-13 08:24:38,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:24:38,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:24:38,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:24:38,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:24:38,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:24:29" (1/3) ... [2020-10-13 08:24:38,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8b2d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:24:38, skipping insertion in model container [2020-10-13 08:24:38,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:24:32" (2/3) ... [2020-10-13 08:24:38,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8b2d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:24:38, skipping insertion in model container [2020-10-13 08:24:38,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:24:38" (3/3) ... [2020-10-13 08:24:38,169 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label44.c [2020-10-13 08:24:38,182 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:24:38,193 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:24:38,209 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:24:38,241 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:24:38,242 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:24:38,242 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:24:38,242 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:24:38,242 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:24:38,242 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:24:38,243 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:24:38,243 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:24:38,279 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:24:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 08:24:38,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:38,290 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] [2020-10-13 08:24:38,291 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:38,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:38,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1113474819, now seen corresponding path program 1 times [2020-10-13 08:24:38,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:38,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121874534] [2020-10-13 08:24:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:38,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:38,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 08:24:38,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:38,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-13 08:24:38,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:24:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:24:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 08:24:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:24:39,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:39,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:39,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:39,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:39,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:39,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:24:39,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:39,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:39,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:39,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:24:39,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:39,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121874534] [2020-10-13 08:24:39,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:24:39,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:24:39,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90776600] [2020-10-13 08:24:39,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:24:39,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:39,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:24:39,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:24:39,239 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:24:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:48,061 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:24:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:48,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-13 08:24:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:48,108 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:24:48,108 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:24:48,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:48,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:24:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:24:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:24:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-13 08:24:48,340 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 56 [2020-10-13 08:24:48,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:48,342 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-13 08:24:48,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:24:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-13 08:24:48,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 08:24:48,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:48,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:24:48,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:24:48,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:48,366 INFO L82 PathProgramCache]: Analyzing trace with hash 486407621, now seen corresponding path program 1 times [2020-10-13 08:24:48,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:48,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489101537] [2020-10-13 08:24:48,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:49,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:49,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:24:49,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:24:49,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1346 [2020-10-13 08:24:49,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:24:49,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:24:49,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:24:49,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:49,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:49,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:49,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:49,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:24:49,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:49,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:49,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:49,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:50,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:50,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:24:50,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:24:50,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:50,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:50,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:24:50,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:50,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489101537] [2020-10-13 08:24:50,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:50,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:50,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833446644] [2020-10-13 08:24:50,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:50,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:50,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:50,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:50,167 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-13 08:24:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:56,937 INFO L93 Difference]: Finished difference Result 3162 states and 5113 transitions. [2020-10-13 08:24:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:56,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 08:24:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:56,956 INFO L225 Difference]: With dead ends: 3162 [2020-10-13 08:24:56,956 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:24:56,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:24:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:24:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:24:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:24:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2333 transitions. [2020-10-13 08:24:57,036 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2333 transitions. Word has length 131 [2020-10-13 08:24:57,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:57,038 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2333 transitions. [2020-10-13 08:24:57,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:57,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2333 transitions. [2020-10-13 08:24:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 08:24:57,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:57,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:24:57,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:24:57,044 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:57,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:57,045 INFO L82 PathProgramCache]: Analyzing trace with hash 767173800, now seen corresponding path program 1 times [2020-10-13 08:24:57,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:57,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247918896] [2020-10-13 08:24:57,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:57,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:57,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:58,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:58,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 08:24:58,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:24:58,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1121 [2020-10-13 08:24:58,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:24:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 08:24:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:58,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:58,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:58,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:58,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:58,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:58,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:24:58,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:58,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:58,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:24:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:58,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:58,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:24:58,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 08:24:58,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:24:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:58,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247918896] [2020-10-13 08:24:58,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:58,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:58,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666750605] [2020-10-13 08:24:58,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:58,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:58,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:58,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:58,531 INFO L87 Difference]: Start difference. First operand 1553 states and 2333 transitions. Second operand 5 states. [2020-10-13 08:25:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:07,351 INFO L93 Difference]: Finished difference Result 4672 states and 7085 transitions. [2020-10-13 08:25:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:07,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-13 08:25:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:07,368 INFO L225 Difference]: With dead ends: 4672 [2020-10-13 08:25:07,369 INFO L226 Difference]: Without dead ends: 3125 [2020-10-13 08:25:07,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:25:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-13 08:25:07,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-13 08:25:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-13 08:25:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4040 transitions. [2020-10-13 08:25:07,450 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4040 transitions. Word has length 132 [2020-10-13 08:25:07,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:07,451 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4040 transitions. [2020-10-13 08:25:07,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:07,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4040 transitions. [2020-10-13 08:25:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 08:25:07,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:07,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:25:07,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:25:07,454 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:07,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:07,454 INFO L82 PathProgramCache]: Analyzing trace with hash 2097028676, now seen corresponding path program 1 times [2020-10-13 08:25:07,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:07,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471489711] [2020-10-13 08:25:07,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:08,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:08,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:25:08,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:25:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 923 [2020-10-13 08:25:08,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 08:25:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 08:25:08,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:08,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:08,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:08,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:08,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:08,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:08,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:25:08,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:08,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:08,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:08,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:08,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:08,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:25:08,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:08,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:25:08,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:25:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:25:08,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471489711] [2020-10-13 08:25:08,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:08,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:25:08,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952713127] [2020-10-13 08:25:08,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:25:08,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:08,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:25:08,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:08,674 INFO L87 Difference]: Start difference. First operand 3109 states and 4040 transitions. Second operand 5 states. [2020-10-13 08:25:18,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:18,987 INFO L93 Difference]: Finished difference Result 7784 states and 10531 transitions. [2020-10-13 08:25:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:18,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-13 08:25:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:19,023 INFO L225 Difference]: With dead ends: 7784 [2020-10-13 08:25:19,023 INFO L226 Difference]: Without dead ends: 4681 [2020-10-13 08:25:19,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:25:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-13 08:25:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4673. [2020-10-13 08:25:19,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2020-10-13 08:25:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 5879 transitions. [2020-10-13 08:25:19,197 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 5879 transitions. Word has length 134 [2020-10-13 08:25:19,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:19,200 INFO L479 AbstractCegarLoop]: Abstraction has 4673 states and 5879 transitions. [2020-10-13 08:25:19,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:19,201 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 5879 transitions. [2020-10-13 08:25:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 08:25:19,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:19,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:25:19,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:25:19,207 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:19,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1089507724, now seen corresponding path program 1 times [2020-10-13 08:25:19,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:19,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469135829] [2020-10-13 08:25:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:19,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:20,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:20,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 08:25:20,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:25:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-13 08:25:20,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 08:25:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 08:25:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:20,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:20,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:20,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:20,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:20,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:20,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:25:20,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:20,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:20,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:20,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:20,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:25:20,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:20,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 08:25:20,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:25:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:25:20,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469135829] [2020-10-13 08:25:20,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:20,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:25:20,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256402318] [2020-10-13 08:25:20,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:25:20,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:20,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:25:20,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:20,545 INFO L87 Difference]: Start difference. First operand 4673 states and 5879 transitions. Second operand 5 states. [2020-10-13 08:25:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:30,944 INFO L93 Difference]: Finished difference Result 14011 states and 17879 transitions. [2020-10-13 08:25:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:30,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-13 08:25:30,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:30,991 INFO L225 Difference]: With dead ends: 14011 [2020-10-13 08:25:30,991 INFO L226 Difference]: Without dead ends: 9344 [2020-10-13 08:25:31,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:25:31,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9344 states. [2020-10-13 08:25:31,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9344 to 9332. [2020-10-13 08:25:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9332 states. [2020-10-13 08:25:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9332 states to 9332 states and 11354 transitions. [2020-10-13 08:25:31,208 INFO L78 Accepts]: Start accepts. Automaton has 9332 states and 11354 transitions. Word has length 174 [2020-10-13 08:25:31,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:31,210 INFO L479 AbstractCegarLoop]: Abstraction has 9332 states and 11354 transitions. [2020-10-13 08:25:31,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:31,210 INFO L276 IsEmpty]: Start isEmpty. Operand 9332 states and 11354 transitions. [2020-10-13 08:25:31,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 08:25:31,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:31,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:25:31,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:25:31,214 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:31,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:31,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1473756279, now seen corresponding path program 1 times [2020-10-13 08:25:31,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:31,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618503501] [2020-10-13 08:25:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:31,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:32,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:32,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 08:25:32,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:25:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-10-13 08:25:32,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-13 08:25:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 08:25:32,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:32,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:32,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:32,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:32,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:32,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:32,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:25:32,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:32,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:32,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:32,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:32,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:32,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:32,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:32,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:32,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:25:32,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 08:25:32,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 08:25:32,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:25:32,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618503501] [2020-10-13 08:25:32,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:32,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:25:32,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407577947] [2020-10-13 08:25:32,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:25:32,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:32,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:25:32,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:32,608 INFO L87 Difference]: Start difference. First operand 9332 states and 11354 transitions. Second operand 5 states. [2020-10-13 08:25:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:44,063 INFO L93 Difference]: Finished difference Result 21002 states and 26468 transitions. [2020-10-13 08:25:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:44,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-13 08:25:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:44,138 INFO L225 Difference]: With dead ends: 21002 [2020-10-13 08:25:44,139 INFO L226 Difference]: Without dead ends: 11676 [2020-10-13 08:25:44,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:25:44,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11676 states. [2020-10-13 08:25:44,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11676 to 11660. [2020-10-13 08:25:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11660 states. [2020-10-13 08:25:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11660 states to 11660 states and 14128 transitions. [2020-10-13 08:25:44,451 INFO L78 Accepts]: Start accepts. Automaton has 11660 states and 14128 transitions. Word has length 177 [2020-10-13 08:25:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:44,453 INFO L479 AbstractCegarLoop]: Abstraction has 11660 states and 14128 transitions. [2020-10-13 08:25:44,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 11660 states and 14128 transitions. [2020-10-13 08:25:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-13 08:25:44,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:44,462 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:25:44,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:25:44,462 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:44,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:44,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1705435675, now seen corresponding path program 1 times [2020-10-13 08:25:44,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:44,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425589813] [2020-10-13 08:25:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:44,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:46,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:49,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:49,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 08:25:49,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:25:49,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 08:25:49,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 08:25:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:25:49,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:49,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:49,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:49,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:49,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:49,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:25:49,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:49,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:49,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:49,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:25:49,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:49,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:25:49,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:49,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:25:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:49,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:49,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:49,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:25:49,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:49,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:25:49,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:25:49,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 08:25:49,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425589813] [2020-10-13 08:25:49,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:49,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:25:49,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954210611] [2020-10-13 08:25:49,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:25:49,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:49,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:25:49,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:49,997 INFO L87 Difference]: Start difference. First operand 11660 states and 14128 transitions. Second operand 5 states. [2020-10-13 08:25:57,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:57,283 INFO L93 Difference]: Finished difference Result 23342 states and 28354 transitions. [2020-10-13 08:25:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:57,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-13 08:25:57,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:57,322 INFO L225 Difference]: With dead ends: 23342 [2020-10-13 08:25:57,322 INFO L226 Difference]: Without dead ends: 11676 [2020-10-13 08:25:57,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:25:57,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11676 states. [2020-10-13 08:25:57,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11676 to 11660. [2020-10-13 08:25:57,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11660 states. [2020-10-13 08:25:57,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11660 states to 11660 states and 14124 transitions. [2020-10-13 08:25:57,557 INFO L78 Accepts]: Start accepts. Automaton has 11660 states and 14124 transitions. Word has length 204 [2020-10-13 08:25:57,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:57,557 INFO L479 AbstractCegarLoop]: Abstraction has 11660 states and 14124 transitions. [2020-10-13 08:25:57,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:57,558 INFO L276 IsEmpty]: Start isEmpty. Operand 11660 states and 14124 transitions. [2020-10-13 08:25:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-13 08:25:57,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:57,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:25:57,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:25:57,565 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:57,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:57,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1243342748, now seen corresponding path program 1 times [2020-10-13 08:25:57,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:57,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610921756] [2020-10-13 08:25:57,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:57,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:59,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:59,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-13 08:25:59,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:25:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1896 [2020-10-13 08:25:59,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-13 08:25:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:25:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:59,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:59,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:59,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:59,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:59,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:59,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:25:59,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:59,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:59,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:59,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:59,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:59,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:59,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:00,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:00,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 08:26:00,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:00,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-13 08:26:00,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:00,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:00,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-13 08:26:00,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:00,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610921756] [2020-10-13 08:26:00,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:00,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:00,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574550559] [2020-10-13 08:26:00,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:00,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:00,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:00,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:00,320 INFO L87 Difference]: Start difference. First operand 11660 states and 14124 transitions. Second operand 5 states. [2020-10-13 08:26:08,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:08,019 INFO L93 Difference]: Finished difference Result 23350 states and 28356 transitions. [2020-10-13 08:26:08,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:08,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-13 08:26:08,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:08,054 INFO L225 Difference]: With dead ends: 23350 [2020-10-13 08:26:08,055 INFO L226 Difference]: Without dead ends: 11676 [2020-10-13 08:26:08,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11676 states. [2020-10-13 08:26:08,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11676 to 11660. [2020-10-13 08:26:08,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11660 states. [2020-10-13 08:26:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11660 states to 11660 states and 14120 transitions. [2020-10-13 08:26:08,270 INFO L78 Accepts]: Start accepts. Automaton has 11660 states and 14120 transitions. Word has length 246 [2020-10-13 08:26:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:08,271 INFO L479 AbstractCegarLoop]: Abstraction has 11660 states and 14120 transitions. [2020-10-13 08:26:08,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:08,272 INFO L276 IsEmpty]: Start isEmpty. Operand 11660 states and 14120 transitions. [2020-10-13 08:26:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-13 08:26:08,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:08,281 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:26:08,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:26:08,282 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:08,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:08,282 INFO L82 PathProgramCache]: Analyzing trace with hash 67890830, now seen corresponding path program 1 times [2020-10-13 08:26:08,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:08,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517984313] [2020-10-13 08:26:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:08,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:10,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:11,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:13,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:13,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-13 08:26:13,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:26:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 08:26:13,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 253 [2020-10-13 08:26:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:26:13,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:13,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:13,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:13,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:13,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:13,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:26:13,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:13,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:13,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:13,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:13,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:13,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:13,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:26:13,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:13,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:26:13,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:13,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:13,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 08:26:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:13,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:13,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:13,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:26:13,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:13,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 08:26:13,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:13,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:13,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 08:26:13,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 08:26:14,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517984313] [2020-10-13 08:26:14,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:14,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:14,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560512083] [2020-10-13 08:26:14,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:14,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:14,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:14,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:14,048 INFO L87 Difference]: Start difference. First operand 11660 states and 14120 transitions. Second operand 5 states. [2020-10-13 08:26:21,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:21,517 INFO L93 Difference]: Finished difference Result 23341 states and 28335 transitions. [2020-10-13 08:26:21,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:21,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 297 [2020-10-13 08:26:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:21,564 INFO L225 Difference]: With dead ends: 23341 [2020-10-13 08:26:21,564 INFO L226 Difference]: Without dead ends: 11676 [2020-10-13 08:26:21,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11676 states. [2020-10-13 08:26:21,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11676 to 11660. [2020-10-13 08:26:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11660 states. [2020-10-13 08:26:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11660 states to 11660 states and 14118 transitions. [2020-10-13 08:26:21,782 INFO L78 Accepts]: Start accepts. Automaton has 11660 states and 14118 transitions. Word has length 297 [2020-10-13 08:26:21,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:21,783 INFO L479 AbstractCegarLoop]: Abstraction has 11660 states and 14118 transitions. [2020-10-13 08:26:21,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 11660 states and 14118 transitions. [2020-10-13 08:26:21,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-10-13 08:26:21,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:21,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:21,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:26:21,806 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:21,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:21,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1629702083, now seen corresponding path program 1 times [2020-10-13 08:26:21,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:21,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147861577] [2020-10-13 08:26:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:21,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:22,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:24,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:24,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:24,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-13 08:26:24,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:26:24,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3077 [2020-10-13 08:26:24,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 369 [2020-10-13 08:26:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:26:24,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:25,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:25,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:25,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:25,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:25,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:25,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:26:25,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:25,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:25,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:25,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:25,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:25,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-13 08:26:25,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:25,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-13 08:26:25,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 354 [2020-10-13 08:26:25,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:25,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:26:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:25,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:25,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:26:25,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:25,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 08:26:25,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:26:25,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:25,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147861577] [2020-10-13 08:26:25,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:25,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:25,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228690576] [2020-10-13 08:26:25,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:25,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:25,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:25,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:25,803 INFO L87 Difference]: Start difference. First operand 11660 states and 14118 transitions. Second operand 5 states. [2020-10-13 08:26:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:32,941 INFO L93 Difference]: Finished difference Result 23348 states and 28340 transitions. [2020-10-13 08:26:32,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:32,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 416 [2020-10-13 08:26:32,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:32,971 INFO L225 Difference]: With dead ends: 23348 [2020-10-13 08:26:32,971 INFO L226 Difference]: Without dead ends: 11676 [2020-10-13 08:26:32,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11676 states. [2020-10-13 08:26:33,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11676 to 11660. [2020-10-13 08:26:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11660 states. [2020-10-13 08:26:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11660 states to 11660 states and 14110 transitions. [2020-10-13 08:26:33,175 INFO L78 Accepts]: Start accepts. Automaton has 11660 states and 14110 transitions. Word has length 416 [2020-10-13 08:26:33,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:33,176 INFO L479 AbstractCegarLoop]: Abstraction has 11660 states and 14110 transitions. [2020-10-13 08:26:33,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:33,176 INFO L276 IsEmpty]: Start isEmpty. Operand 11660 states and 14110 transitions. [2020-10-13 08:26:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-10-13 08:26:33,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:33,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:33,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:26:33,209 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:33,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1276655737, now seen corresponding path program 1 times [2020-10-13 08:26:33,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:33,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091625720] [2020-10-13 08:26:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:33,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:33,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:34,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:35,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:35,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 489 [2020-10-13 08:26:35,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:26:35,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2227 [2020-10-13 08:26:35,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:35,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:35,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 430 [2020-10-13 08:26:35,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:26:35,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:35,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:35,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:35,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:35,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:35,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:35,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:26:35,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:35,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:35,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:36,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:36,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-13 08:26:36,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:36,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-13 08:26:36,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 415 [2020-10-13 08:26:36,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:36,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:26:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:36,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:36,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:36,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 08:26:36,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:26:36,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 08:26:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:36,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091625720] [2020-10-13 08:26:36,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:36,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:36,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123644142] [2020-10-13 08:26:36,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:36,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:36,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:36,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:36,533 INFO L87 Difference]: Start difference. First operand 11660 states and 14110 transitions. Second operand 5 states. [2020-10-13 08:26:44,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:44,721 INFO L93 Difference]: Finished difference Result 23356 states and 28334 transitions. [2020-10-13 08:26:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:44,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 477 [2020-10-13 08:26:44,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:44,771 INFO L225 Difference]: With dead ends: 23356 [2020-10-13 08:26:44,771 INFO L226 Difference]: Without dead ends: 11676 [2020-10-13 08:26:44,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:44,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11676 states. [2020-10-13 08:26:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11676 to 11660. [2020-10-13 08:26:44,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11660 states. [2020-10-13 08:26:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11660 states to 11660 states and 14094 transitions. [2020-10-13 08:26:44,962 INFO L78 Accepts]: Start accepts. Automaton has 11660 states and 14094 transitions. Word has length 477 [2020-10-13 08:26:44,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:44,963 INFO L479 AbstractCegarLoop]: Abstraction has 11660 states and 14094 transitions. [2020-10-13 08:26:44,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand 11660 states and 14094 transitions. [2020-10-13 08:26:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2020-10-13 08:26:44,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:44,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:44,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:26:44,996 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:44,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:44,997 INFO L82 PathProgramCache]: Analyzing trace with hash -58328966, now seen corresponding path program 1 times [2020-10-13 08:26:44,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:44,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776683992] [2020-10-13 08:26:44,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:46,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:50,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:50,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:50,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 741 [2020-10-13 08:26:50,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:26:50,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 08:26:50,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 679 [2020-10-13 08:26:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:26:50,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:50,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:50,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:50,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:50,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:50,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:50,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:26:50,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:50,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:50,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:50,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:50,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:50,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:50,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:50,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:50,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:26:50,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:50,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:26:50,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:50,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:50,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:26:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:50,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:51,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:51,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-13 08:26:51,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:51,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-10-13 08:26:51,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 586 [2020-10-13 08:26:51,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:51,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:26:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:51,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:51,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 08:26:51,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-13 08:26:51,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-13 08:26:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:51,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:26:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:51,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:51,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:51,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:26:51,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:26:51,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 08:26:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 08:26:52,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776683992] [2020-10-13 08:26:52,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:52,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:26:52,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907197250] [2020-10-13 08:26:52,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:26:52,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:52,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:26:52,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:52,274 INFO L87 Difference]: Start difference. First operand 11660 states and 14094 transitions. Second operand 6 states. [2020-10-13 08:27:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:04,868 INFO L93 Difference]: Finished difference Result 28758 states and 35838 transitions. [2020-10-13 08:27:04,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:04,869 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 725 [2020-10-13 08:27:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:04,913 INFO L225 Difference]: With dead ends: 28758 [2020-10-13 08:27:04,913 INFO L226 Difference]: Without dead ends: 17104 [2020-10-13 08:27:04,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:27:04,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17104 states. [2020-10-13 08:27:05,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17104 to 16318. [2020-10-13 08:27:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16318 states. [2020-10-13 08:27:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16318 states to 16318 states and 20064 transitions. [2020-10-13 08:27:05,195 INFO L78 Accepts]: Start accepts. Automaton has 16318 states and 20064 transitions. Word has length 725 [2020-10-13 08:27:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:05,196 INFO L479 AbstractCegarLoop]: Abstraction has 16318 states and 20064 transitions. [2020-10-13 08:27:05,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:27:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 16318 states and 20064 transitions. [2020-10-13 08:27:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2020-10-13 08:27:05,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:05,230 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:05,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:27:05,230 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:05,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:05,231 INFO L82 PathProgramCache]: Analyzing trace with hash -2002780042, now seen corresponding path program 1 times [2020-10-13 08:27:05,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:05,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269441208] [2020-10-13 08:27:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:05,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:06,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:07,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:07,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:10,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:10,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 747 [2020-10-13 08:27:10,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:27:10,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 08:27:10,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 685 [2020-10-13 08:27:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:27:10,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:10,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:10,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:10,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:10,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:10,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:10,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:27:10,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:10,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:10,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:10,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:10,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:10,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:27:10,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:10,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 08:27:10,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:10,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:10,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 08:27:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:10,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:11,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:11,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-13 08:27:11,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-13 08:27:11,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 550 [2020-10-13 08:27:11,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:11,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:27:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:11,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:11,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 08:27:11,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:11,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-13 08:27:11,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-13 08:27:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:11,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:27:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:11,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:11,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:11,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 08:27:11,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 08:27:11,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:27:11,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 08:27:13,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269441208] [2020-10-13 08:27:13,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:13,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:13,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335034372] [2020-10-13 08:27:13,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:13,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:13,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:13,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:13,044 INFO L87 Difference]: Start difference. First operand 16318 states and 20064 transitions. Second operand 5 states. [2020-10-13 08:27:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:23,045 INFO L93 Difference]: Finished difference Result 32680 states and 40270 transitions. [2020-10-13 08:27:23,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:23,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 731 [2020-10-13 08:27:23,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:23,098 INFO L225 Difference]: With dead ends: 32680 [2020-10-13 08:27:23,098 INFO L226 Difference]: Without dead ends: 16334 [2020-10-13 08:27:23,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16334 states. [2020-10-13 08:27:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16334 to 16318. [2020-10-13 08:27:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16318 states. [2020-10-13 08:27:23,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16318 states to 16318 states and 20060 transitions. [2020-10-13 08:27:23,406 INFO L78 Accepts]: Start accepts. Automaton has 16318 states and 20060 transitions. Word has length 731 [2020-10-13 08:27:23,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:23,407 INFO L479 AbstractCegarLoop]: Abstraction has 16318 states and 20060 transitions. [2020-10-13 08:27:23,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:23,407 INFO L276 IsEmpty]: Start isEmpty. Operand 16318 states and 20060 transitions. [2020-10-13 08:27:23,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2020-10-13 08:27:23,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:23,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:23,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:27:23,448 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:23,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:23,449 INFO L82 PathProgramCache]: Analyzing trace with hash 469370318, now seen corresponding path program 1 times [2020-10-13 08:27:23,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:23,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17710942] [2020-10-13 08:27:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:24,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:26,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:26,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 810 [2020-10-13 08:27:26,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:27:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2557 [2020-10-13 08:27:26,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:27:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:27:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:27:26,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:26,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:26,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:26,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:26,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:26,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:26,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:27:26,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:26,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:26,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:27:26,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:26,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:26,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:26,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:26,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:27:26,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:26,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:27:26,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:27:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:27:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:26,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 08:27:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:26,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:26,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:26,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 665 [2020-10-13 08:27:26,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-13 08:27:26,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 662 [2020-10-13 08:27:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:26,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:27:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:26,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:27,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:27,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-13 08:27:27,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:27:27,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:27,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:27,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:27:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:27,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:27,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:27,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 08:27:27,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:27:27,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:27,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 98 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:27:27,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17710942] [2020-10-13 08:27:27,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:27,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:27:27,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636346962] [2020-10-13 08:27:27,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:27:27,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:27,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:27:27,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:27:27,709 INFO L87 Difference]: Start difference. First operand 16318 states and 20060 transitions. Second operand 7 states. [2020-10-13 08:27:44,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:44,732 INFO L93 Difference]: Finished difference Result 48615 states and 61897 transitions. [2020-10-13 08:27:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:27:44,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 794 [2020-10-13 08:27:44,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:44,845 INFO L225 Difference]: With dead ends: 48615 [2020-10-13 08:27:44,845 INFO L226 Difference]: Without dead ends: 32303 [2020-10-13 08:27:44,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:27:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32303 states. [2020-10-13 08:27:45,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32303 to 30653. [2020-10-13 08:27:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30653 states. [2020-10-13 08:27:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30653 states to 30653 states and 38116 transitions. [2020-10-13 08:27:45,502 INFO L78 Accepts]: Start accepts. Automaton has 30653 states and 38116 transitions. Word has length 794 [2020-10-13 08:27:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:45,503 INFO L479 AbstractCegarLoop]: Abstraction has 30653 states and 38116 transitions. [2020-10-13 08:27:45,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:27:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 30653 states and 38116 transitions. [2020-10-13 08:27:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2020-10-13 08:27:45,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:45,552 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:45,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 08:27:45,553 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:45,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:45,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1102529671, now seen corresponding path program 1 times [2020-10-13 08:27:45,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:45,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459914054] [2020-10-13 08:27:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:45,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:50,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:50,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 811 [2020-10-13 08:27:50,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:27:50,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 08:27:50,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:27:50,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:27:50,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 08:27:50,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:50,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:50,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:50,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:50,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:50,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:27:50,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:27:50,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:50,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:50,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:50,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:50,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:27:50,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 08:27:50,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:50,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:27:50,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:27:50,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:51,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 08:27:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:51,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:51,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 665 [2020-10-13 08:27:51,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:51,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-13 08:27:51,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 662 [2020-10-13 08:27:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:51,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:27:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:51,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:52,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:52,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-13 08:27:52,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:27:52,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:52,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:27:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:52,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:52,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:52,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 08:27:52,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:52,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:27:52,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 98 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:27:52,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459914054] [2020-10-13 08:27:52,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:52,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:27:52,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547867378] [2020-10-13 08:27:52,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:27:52,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:52,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:27:52,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:27:52,593 INFO L87 Difference]: Start difference. First operand 30653 states and 38116 transitions. Second operand 7 states.