/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:54:29,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:54:29,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:54:30,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:54:30,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:54:30,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:54:30,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:54:30,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:54:30,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:54:30,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:54:30,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:54:30,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:54:30,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:54:30,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:54:30,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:54:30,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:54:30,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:54:30,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:54:30,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:54:30,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:54:30,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:54:30,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:54:30,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:54:30,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:54:30,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:54:30,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:54:30,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:54:30,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:54:30,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:54:30,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:54:30,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:54:30,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:54:30,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:54:30,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:54:30,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:54:30,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:54:30,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:54:30,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:54:30,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:54:30,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:54:30,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:54:30,098 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 [2020-10-27 15:54:30,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:54:30,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:54:30,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:54:30,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:54:30,157 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:54:30,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:54:30,158 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:54:30,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:54:30,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:54:30,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:54:30,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:54:30,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:54:30,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:54:30,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:54:30,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:54:30,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:54:30,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:54:30,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:54:30,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:54:30,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:54:30,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:54:30,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:54:30,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:54:30,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:54:30,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:54:30,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:54:30,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:54:30,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:54:30,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:54:30,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:54:30,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:54:30,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:54:30,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:54:30,601 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:54:30,602 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:54:30,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label14.c [2020-10-27 15:54:30,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03b9a2689/2062e7fbbf974eac83facbb573a285e3/FLAG8512dae7f [2020-10-27 15:54:31,711 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:54:31,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label14.c [2020-10-27 15:54:31,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03b9a2689/2062e7fbbf974eac83facbb573a285e3/FLAG8512dae7f [2020-10-27 15:54:32,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03b9a2689/2062e7fbbf974eac83facbb573a285e3 [2020-10-27 15:54:32,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:54:32,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:54:32,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:54:32,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:54:32,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:54:32,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:54:32" (1/1) ... [2020-10-27 15:54:32,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7637ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:54:32, skipping insertion in model container [2020-10-27 15:54:32,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:54:32" (1/1) ... [2020-10-27 15:54:32,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:54:32,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:54:33,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:54:33,784 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:54:34,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:54:34,683 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:54:34,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:54:34 WrapperNode [2020-10-27 15:54:34,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:54:34,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:54:34,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:54:34,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:54:34,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:54:34" (1/1) ... [2020-10-27 15:54:34,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:54:34" (1/1) ... [2020-10-27 15:54:34,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:54:34" (1/1) ... [2020-10-27 15:54:34,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:54:34" (1/1) ... [2020-10-27 15:54:34,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:54:34" (1/1) ... [2020-10-27 15:54:34,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:54:34" (1/1) ... [2020-10-27 15:54:34,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:54:34" (1/1) ... [2020-10-27 15:54:35,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:54:35,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:54:35,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:54:35,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:54:35,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:54:34" (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 [2020-10-27 15:54:35,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:54:35,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:54:35,117 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:54:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:54:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 15:54:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 15:54:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 15:54:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:54:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:54:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 15:54:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 15:54:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 15:54:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:54:35,121 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:54:35,121 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:54:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:54:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:54:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:54:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:54:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:54:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:54:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:54:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:54:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:54:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:54:40,194 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:54:40,194 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:54:40,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:54:40 BoogieIcfgContainer [2020-10-27 15:54:40,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:54:40,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:54:40,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:54:40,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:54:40,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:54:32" (1/3) ... [2020-10-27 15:54:40,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726ae91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:54:40, skipping insertion in model container [2020-10-27 15:54:40,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:54:34" (2/3) ... [2020-10-27 15:54:40,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726ae91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:54:40, skipping insertion in model container [2020-10-27 15:54:40,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:54:40" (3/3) ... [2020-10-27 15:54:40,208 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label14.c [2020-10-27 15:54:40,221 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:54:40,227 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:54:40,241 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:54:40,276 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:54:40,277 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:54:40,277 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:54:40,277 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:54:40,277 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:54:40,277 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:54:40,277 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:54:40,278 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:54:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-27 15:54:40,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2020-10-27 15:54:40,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:54:40,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:54:40,367 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:54:40,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:54:40,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1793122080, now seen corresponding path program 1 times [2020-10-27 15:54:40,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:54:40,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391016937] [2020-10-27 15:54:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:54:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:54:41,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:46,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:54:46,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 805 [2020-10-27 15:54:46,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:54:46,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-10-27 15:54:46,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:54:46,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:54:46,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:54:46,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 796 [2020-10-27 15:54:46,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:54:47,375 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 15:54:47,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:54:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:54:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:47,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:54:47,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:54:47,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:54:47,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 15:54:47,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:54:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:54:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:54:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:54:47,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:54:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:54:48,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391016937] [2020-10-27 15:54:48,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:54:48,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:54:48,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574884634] [2020-10-27 15:54:48,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:54:48,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:54:48,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:54:48,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:54:48,945 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-27 15:54:49,154 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:54:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:54:59,929 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-27 15:54:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:54:59,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 789 [2020-10-27 15:54:59,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:54:59,979 INFO L225 Difference]: With dead ends: 2677 [2020-10-27 15:54:59,980 INFO L226 Difference]: Without dead ends: 1703 [2020-10-27 15:54:59,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:55:00,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-27 15:55:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-27 15:55:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-27 15:55:00,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3030 transitions. [2020-10-27 15:55:00,203 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3030 transitions. Word has length 789 [2020-10-27 15:55:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:55:00,206 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3030 transitions. [2020-10-27 15:55:00,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:55:00,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3030 transitions. [2020-10-27 15:55:00,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2020-10-27 15:55:00,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:55:00,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:55:00,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:55:00,240 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:55:00,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:55:00,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1399161982, now seen corresponding path program 1 times [2020-10-27 15:55:00,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:55:00,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114911895] [2020-10-27 15:55:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:55:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:00,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:01,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:04,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:05,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:05,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-10-27 15:55:05,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:55:05,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 15:55:05,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:55:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 15:55:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 793 [2020-10-27 15:55:05,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 15:55:06,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:55:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:06,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:06,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:06,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:55:06,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:06,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:55:06,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:06,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:55:06,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:55:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 15:55:06,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:55:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:06,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:06,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:55:06,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:06,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:55:06,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:55:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 15:55:06,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:55:07,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114911895] [2020-10-27 15:55:07,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:55:07,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:55:07,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084425524] [2020-10-27 15:55:07,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:55:07,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:55:07,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:55:07,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:55:07,306 INFO L87 Difference]: Start difference. First operand 1690 states and 3030 transitions. Second operand 5 states. [2020-10-27 15:55:18,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:55:18,954 INFO L93 Difference]: Finished difference Result 5077 states and 9156 transitions. [2020-10-27 15:55:18,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:55:18,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 797 [2020-10-27 15:55:18,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:55:18,980 INFO L225 Difference]: With dead ends: 5077 [2020-10-27 15:55:18,981 INFO L226 Difference]: Without dead ends: 3393 [2020-10-27 15:55:18,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:55:18,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2020-10-27 15:55:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3389. [2020-10-27 15:55:19,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3389 states. [2020-10-27 15:55:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 5302 transitions. [2020-10-27 15:55:19,099 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 5302 transitions. Word has length 797 [2020-10-27 15:55:19,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:55:19,101 INFO L481 AbstractCegarLoop]: Abstraction has 3389 states and 5302 transitions. [2020-10-27 15:55:19,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:55:19,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 5302 transitions. [2020-10-27 15:55:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-27 15:55:19,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:55:19,138 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:55:19,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:55:19,138 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:55:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:55:19,140 INFO L82 PathProgramCache]: Analyzing trace with hash -992476345, now seen corresponding path program 1 times [2020-10-27 15:55:19,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:55:19,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159672136] [2020-10-27 15:55:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:55:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:20,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:24,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:24,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-27 15:55:24,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:55:24,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-27 15:55:24,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 15:55:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:55:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 754 [2020-10-27 15:55:24,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:25,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:55:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:25,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:25,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:55:25,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:25,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:55:25,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:55:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:55:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:25,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:55:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:25,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:25,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 15:55:25,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:25,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 15:55:25,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:55:25,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:25,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 15:55:25,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:55:31,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159672136] [2020-10-27 15:55:31,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:55:31,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 15:55:31,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840471855] [2020-10-27 15:55:31,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 15:55:31,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:55:31,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 15:55:31,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:55:31,179 INFO L87 Difference]: Start difference. First operand 3389 states and 5302 transitions. Second operand 19 states. [2020-10-27 15:55:31,553 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 15:55:31,759 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 15:55:32,501 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 15:55:33,494 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 15:55:35,228 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 15:55:37,213 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 15:55:37,385 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 15:55:39,349 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 15:55:42,226 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 15:55:42,388 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 15:55:46,895 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 15:55:47,058 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 15:55:47,980 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 15:55:48,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:55:48,936 INFO L93 Difference]: Finished difference Result 7540 states and 12146 transitions. [2020-10-27 15:55:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 15:55:48,937 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 804 [2020-10-27 15:55:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:55:48,969 INFO L225 Difference]: With dead ends: 7540 [2020-10-27 15:55:48,969 INFO L226 Difference]: Without dead ends: 4157 [2020-10-27 15:55:48,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2020-10-27 15:55:48,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2020-10-27 15:55:49,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 4147. [2020-10-27 15:55:49,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4147 states. [2020-10-27 15:55:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 6077 transitions. [2020-10-27 15:55:49,111 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 6077 transitions. Word has length 804 [2020-10-27 15:55:49,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:55:49,115 INFO L481 AbstractCegarLoop]: Abstraction has 4147 states and 6077 transitions. [2020-10-27 15:55:49,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 15:55:49,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 6077 transitions. [2020-10-27 15:55:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2020-10-27 15:55:49,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:55:49,133 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:55:49,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:55:49,133 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:55:49,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:55:49,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1303501910, now seen corresponding path program 1 times [2020-10-27 15:55:49,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:55:49,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490265352] [2020-10-27 15:55:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:55:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:49,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:50,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:54,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:54,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-27 15:55:54,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:55:54,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 15:55:54,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:55:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 15:55:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 793 [2020-10-27 15:55:54,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:54,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:55:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:54,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:54,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:55:54,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:54,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:55:54,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:55:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:55:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:54,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:55:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:54,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:54,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 15:55:54,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 15:55:54,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:55:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 15:55:54,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:55:55,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490265352] [2020-10-27 15:55:55,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:55:55,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:55:55,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411173409] [2020-10-27 15:55:55,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:55:55,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:55:55,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:55:55,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:55:55,384 INFO L87 Difference]: Start difference. First operand 4147 states and 6077 transitions. Second operand 5 states. [2020-10-27 15:56:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:56:05,699 INFO L93 Difference]: Finished difference Result 9979 states and 15308 transitions. [2020-10-27 15:56:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:56:05,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 809 [2020-10-27 15:56:05,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:56:05,732 INFO L225 Difference]: With dead ends: 9979 [2020-10-27 15:56:05,733 INFO L226 Difference]: Without dead ends: 5838 [2020-10-27 15:56:05,742 INFO L677 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 [2020-10-27 15:56:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2020-10-27 15:56:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 5834. [2020-10-27 15:56:05,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5834 states. [2020-10-27 15:56:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 8846 transitions. [2020-10-27 15:56:05,930 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 8846 transitions. Word has length 809 [2020-10-27 15:56:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:56:05,932 INFO L481 AbstractCegarLoop]: Abstraction has 5834 states and 8846 transitions. [2020-10-27 15:56:05,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:56:05,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 8846 transitions. [2020-10-27 15:56:05,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-10-27 15:56:05,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:56:05,959 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:56:05,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:56:05,960 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:56:05,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:56:05,961 INFO L82 PathProgramCache]: Analyzing trace with hash 29395699, now seen corresponding path program 1 times [2020-10-27 15:56:05,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:56:05,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820020450] [2020-10-27 15:56:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:56:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:06,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:06,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:11,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:11,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-27 15:56:11,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:56:11,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 15:56:11,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:56:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 15:56:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 793 [2020-10-27 15:56:11,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:11,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:56:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:11,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:11,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:11,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:56:11,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:11,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:56:11,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:11,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:11,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:56:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:11,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:11,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:11,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:56:11,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:11,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 15:56:11,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:56:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 15:56:11,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:56:12,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820020450] [2020-10-27 15:56:12,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:56:12,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:56:12,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386806539] [2020-10-27 15:56:12,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:56:12,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:56:12,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:56:12,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:56:12,441 INFO L87 Difference]: Start difference. First operand 5834 states and 8846 transitions. Second operand 5 states. [2020-10-27 15:56:22,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:56:22,406 INFO L93 Difference]: Finished difference Result 16764 states and 26269 transitions. [2020-10-27 15:56:22,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:56:22,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 810 [2020-10-27 15:56:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:56:22,458 INFO L225 Difference]: With dead ends: 16764 [2020-10-27 15:56:22,458 INFO L226 Difference]: Without dead ends: 10936 [2020-10-27 15:56:22,473 INFO L677 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 [2020-10-27 15:56:22,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10936 states. [2020-10-27 15:56:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10936 to 10924. [2020-10-27 15:56:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10924 states. [2020-10-27 15:56:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10924 states to 10924 states and 16397 transitions. [2020-10-27 15:56:22,797 INFO L78 Accepts]: Start accepts. Automaton has 10924 states and 16397 transitions. Word has length 810 [2020-10-27 15:56:22,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:56:22,799 INFO L481 AbstractCegarLoop]: Abstraction has 10924 states and 16397 transitions. [2020-10-27 15:56:22,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:56:22,799 INFO L276 IsEmpty]: Start isEmpty. Operand 10924 states and 16397 transitions. [2020-10-27 15:56:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2020-10-27 15:56:22,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:56:22,838 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:56:22,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:56:22,839 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:56:22,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:56:22,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1977503362, now seen corresponding path program 1 times [2020-10-27 15:56:22,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:56:22,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628410083] [2020-10-27 15:56:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:56:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:22,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:23,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:27,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:27,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:27,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 865 [2020-10-27 15:56:27,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:56:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-27 15:56:27,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:56:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 15:56:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 775 [2020-10-27 15:56:27,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:29,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:56:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:29,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:29,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:29,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:56:29,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:29,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:56:29,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:29,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:56:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:29,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:29,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:29,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 15:56:29,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:29,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 15:56:29,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:29,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:56:29,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:29,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 15:56:29,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:56:36,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628410083] [2020-10-27 15:56:36,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:56:36,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:56:36,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159836392] [2020-10-27 15:56:36,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:56:36,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:56:36,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:56:36,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:56:36,608 INFO L87 Difference]: Start difference. First operand 10924 states and 16397 transitions. Second operand 5 states. [2020-10-27 15:56:37,191 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 15:56:48,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:56:48,183 INFO L93 Difference]: Finished difference Result 22612 states and 34397 transitions. [2020-10-27 15:56:48,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:56:48,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 847 [2020-10-27 15:56:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:56:48,224 INFO L225 Difference]: With dead ends: 22612 [2020-10-27 15:56:48,224 INFO L226 Difference]: Without dead ends: 10928 [2020-10-27 15:56:48,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:56:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10928 states. [2020-10-27 15:56:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10928 to 10924. [2020-10-27 15:56:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10924 states. [2020-10-27 15:56:48,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10924 states to 10924 states and 16385 transitions. [2020-10-27 15:56:48,630 INFO L78 Accepts]: Start accepts. Automaton has 10924 states and 16385 transitions. Word has length 847 [2020-10-27 15:56:48,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:56:48,631 INFO L481 AbstractCegarLoop]: Abstraction has 10924 states and 16385 transitions. [2020-10-27 15:56:48,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:56:48,631 INFO L276 IsEmpty]: Start isEmpty. Operand 10924 states and 16385 transitions. [2020-10-27 15:56:48,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2020-10-27 15:56:48,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:56:48,669 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:56:48,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:56:48,670 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:56:48,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:56:48,671 INFO L82 PathProgramCache]: Analyzing trace with hash -2100066128, now seen corresponding path program 1 times [2020-10-27 15:56:48,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:56:48,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923080446] [2020-10-27 15:56:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:56:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:48,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:49,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:53,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:53,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 875 [2020-10-27 15:56:53,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:56:53,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 15:56:53,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:56:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 15:56:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 568 [2020-10-27 15:56:53,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:55,205 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-10-27 15:56:55,340 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-10-27 15:56:55,523 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-27 15:56:55,778 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-27 15:56:55,917 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-10-27 15:56:56,383 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-10-27 15:56:56,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:56:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:56,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:56,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:56,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:56:56,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:56,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:56:56,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:56,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:56,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:56:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:56,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:56,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:56:56,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:56:56,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:56,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:56:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:56,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:56,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:56,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 15:56:56,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:56,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 15:56:56,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:56,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:56:56,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:56,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 15:56:56,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:57:01,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923080446] [2020-10-27 15:57:01,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:57:01,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 15:57:01,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800100660] [2020-10-27 15:57:01,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 15:57:01,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:57:01,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 15:57:01,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:57:01,948 INFO L87 Difference]: Start difference. First operand 10924 states and 16385 transitions. Second operand 17 states. [2020-10-27 15:57:03,175 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 15:57:03,429 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 15:57:04,881 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 15:57:05,737 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 15:57:10,208 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 15:57:10,950 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 15:57:11,164 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 15:57:15,091 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2020-10-27 15:57:15,779 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 15:57:18,552 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 15:57:18,725 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 15:57:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:57:25,180 INFO L93 Difference]: Finished difference Result 22411 states and 33962 transitions. [2020-10-27 15:57:25,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:57:25,181 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 855 [2020-10-27 15:57:25,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:57:25,217 INFO L225 Difference]: With dead ends: 22411 [2020-10-27 15:57:25,217 INFO L226 Difference]: Without dead ends: 11493 [2020-10-27 15:57:25,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2020-10-27 15:57:25,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11493 states. [2020-10-27 15:57:25,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11493 to 11487. [2020-10-27 15:57:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11487 states. [2020-10-27 15:57:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11487 states to 11487 states and 16966 transitions. [2020-10-27 15:57:25,493 INFO L78 Accepts]: Start accepts. Automaton has 11487 states and 16966 transitions. Word has length 855 [2020-10-27 15:57:25,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:57:25,495 INFO L481 AbstractCegarLoop]: Abstraction has 11487 states and 16966 transitions. [2020-10-27 15:57:25,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 15:57:25,495 INFO L276 IsEmpty]: Start isEmpty. Operand 11487 states and 16966 transitions. [2020-10-27 15:57:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2020-10-27 15:57:25,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:57:25,536 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:57:25,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:57:25,537 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:57:25,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:57:25,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1112063016, now seen corresponding path program 1 times [2020-10-27 15:57:25,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:57:25,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579531244] [2020-10-27 15:57:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:57:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:25,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:25,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:26,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:29,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:30,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:30,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 943 [2020-10-27 15:57:30,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:57:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 15:57:30,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:57:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-27 15:57:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 793 [2020-10-27 15:57:30,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:31,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:57:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:31,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:31,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:31,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:57:31,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:57:31,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:31,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:57:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:31,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:31,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:31,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 15:57:31,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:57:31,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:31,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 15:57:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:31,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:31,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:31,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 15:57:31,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:31,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 15:57:31,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:57:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 15:57:31,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 15:57:32,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579531244] [2020-10-27 15:57:32,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:57:32,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:57:32,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282947023] [2020-10-27 15:57:32,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:57:32,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:57:32,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:57:32,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:57:32,168 INFO L87 Difference]: Start difference. First operand 11487 states and 16966 transitions. Second operand 5 states. [2020-10-27 15:57:44,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:57:44,459 INFO L93 Difference]: Finished difference Result 33081 states and 50451 transitions. [2020-10-27 15:57:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:57:44,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 923 [2020-10-27 15:57:44,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:57:44,553 INFO L225 Difference]: With dead ends: 33081 [2020-10-27 15:57:44,553 INFO L226 Difference]: Without dead ends: 21600 [2020-10-27 15:57:44,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:57:44,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21600 states. [2020-10-27 15:57:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21600 to 21596. [2020-10-27 15:57:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21596 states. [2020-10-27 15:57:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21596 states to 21596 states and 29770 transitions. [2020-10-27 15:57:45,102 INFO L78 Accepts]: Start accepts. Automaton has 21596 states and 29770 transitions. Word has length 923 [2020-10-27 15:57:45,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:57:45,104 INFO L481 AbstractCegarLoop]: Abstraction has 21596 states and 29770 transitions. [2020-10-27 15:57:45,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:57:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand 21596 states and 29770 transitions. [2020-10-27 15:57:45,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2020-10-27 15:57:45,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:57:45,193 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:57:45,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:57:45,193 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:57:45,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:57:45,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1611498383, now seen corresponding path program 1 times [2020-10-27 15:57:45,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:57:45,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288419093] [2020-10-27 15:57:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:57:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:45,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:45,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:48,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:50,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:50,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 982 [2020-10-27 15:57:50,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:57:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5129 [2020-10-27 15:57:50,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:57:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-27 15:57:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 784 [2020-10-27 15:57:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:51,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:57:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:51,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:51,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:57:51,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:51,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:57:51,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:51,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:57:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:51,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:51,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 15:57:51,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:51,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:57:51,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:51,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:51,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 15:57:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:51,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:51,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:51,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 15:57:51,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:51,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 15:57:51,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:51,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:57:51,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:51,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 15:57:51,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 15:57:55,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288419093] [2020-10-27 15:57:55,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:57:55,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:57:55,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015355785] [2020-10-27 15:57:55,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:57:55,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:57:55,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:57:55,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:57:55,810 INFO L87 Difference]: Start difference. First operand 21596 states and 29770 transitions. Second operand 5 states. [2020-10-27 15:57:57,544 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 104