/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/Problem13_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:57:54,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:57:54,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:57:55,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:57:55,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:57:55,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:57:55,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:57:55,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:57:55,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:57:55,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:57:55,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:57:55,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:57:55,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:57:55,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:57:55,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:57:55,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:57:55,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:57:55,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:57:55,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:57:55,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:57:55,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:57:55,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:57:55,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:57:55,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:57:55,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:57:55,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:57:55,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:57:55,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:57:55,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:57:55,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:57:55,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:57:55,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:57:55,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:57:55,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:57:55,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:57:55,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:57:55,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:57:55,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:57:55,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:57:55,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:57:55,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:57:55,162 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 17:57:55,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:57:55,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:57:55,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:57:55,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:57:55,223 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:57:55,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:57:55,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:57:55,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:57:55,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:57:55,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:57:55,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:57:55,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:57:55,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:57:55,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:57:55,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:57:55,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:57:55,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:57:55,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:57:55,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:57:55,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:57:55,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:57:55,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:57:55,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:57:55,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:57:55,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:57:55,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:57:55,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:57:55,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:57:55,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:57:55,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:57:55,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:57:55,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:57:55,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:57:55,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:57:55,796 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:57:55,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label19.c [2020-10-27 17:57:55,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/460b5138c/d4fa85d2014e4b81990687427e625228/FLAG92f32b1d9 [2020-10-27 17:57:57,002 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:57:57,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label19.c [2020-10-27 17:57:57,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/460b5138c/d4fa85d2014e4b81990687427e625228/FLAG92f32b1d9 [2020-10-27 17:57:57,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/460b5138c/d4fa85d2014e4b81990687427e625228 [2020-10-27 17:57:57,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:57:57,405 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:57:57,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:57:57,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:57:57,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:57:57,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:57:57" (1/1) ... [2020-10-27 17:57:57,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afc6b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:57, skipping insertion in model container [2020-10-27 17:57:57,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:57:57" (1/1) ... [2020-10-27 17:57:57,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:57:57,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:57:59,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:57:59,338 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:58:00,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:58:00,156 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:58:00,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:58:00 WrapperNode [2020-10-27 17:58:00,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:58:00,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:58:00,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:58:00,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:58:00,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:58:00" (1/1) ... [2020-10-27 17:58:00,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:58:00" (1/1) ... [2020-10-27 17:58:00,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:58:00" (1/1) ... [2020-10-27 17:58:00,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:58:00" (1/1) ... [2020-10-27 17:58:00,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:58:00" (1/1) ... [2020-10-27 17:58:00,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:58:00" (1/1) ... [2020-10-27 17:58:00,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:58:00" (1/1) ... [2020-10-27 17:58:00,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:58:00,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:58:00,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:58:00,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:58:00,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:58:00" (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 17:58:00,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:58:00,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:58:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:58:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:58:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:58:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:58:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:58:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:58:00,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:58:00,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:58:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:58:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:58:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:58:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:58:00,767 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:58:00,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:58:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:58:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:58:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:58:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:58:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:58:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:58:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:58:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:58:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:58:10,847 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:58:10,848 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:58:10,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:58:10 BoogieIcfgContainer [2020-10-27 17:58:10,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:58:10,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:58:10,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:58:10,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:58:10,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:57:57" (1/3) ... [2020-10-27 17:58:10,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a54c50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:58:10, skipping insertion in model container [2020-10-27 17:58:10,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:58:00" (2/3) ... [2020-10-27 17:58:10,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a54c50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:58:10, skipping insertion in model container [2020-10-27 17:58:10,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:58:10" (3/3) ... [2020-10-27 17:58:10,863 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label19.c [2020-10-27 17:58:10,878 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:58:10,885 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:58:10,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:58:10,941 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:58:10,941 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:58:10,942 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:58:10,942 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:58:10,942 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:58:10,942 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:58:10,942 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:58:10,942 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:58:10,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-27 17:58:10,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 17:58:10,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:58:10,993 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] [2020-10-27 17:58:10,993 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:58:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:58:11,001 INFO L82 PathProgramCache]: Analyzing trace with hash -22941566, now seen corresponding path program 1 times [2020-10-27 17:58:11,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:58:11,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436201668] [2020-10-27 17:58:11,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:58:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:11,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:11,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:11,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 17:58:11,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:58:11,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-27 17:58:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:58:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:58:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 17:58:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:58:11,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:58:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:11,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:12,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:12,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:58:12,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:58:12,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 17:58:12,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:58:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:58:12,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:58:12,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:58:12,069 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 17:58:12,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436201668] [2020-10-27 17:58:12,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:58:12,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:58:12,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484712250] [2020-10-27 17:58:12,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:58:12,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:58:12,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:58:12,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:58:12,109 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-27 17:58:31,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:58:31,978 INFO L93 Difference]: Finished difference Result 3112 states and 5735 transitions. [2020-10-27 17:58:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:58:31,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 17:58:31,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:58:32,024 INFO L225 Difference]: With dead ends: 3112 [2020-10-27 17:58:32,026 INFO L226 Difference]: Without dead ends: 1904 [2020-10-27 17:58:32,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:58:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-27 17:58:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1884. [2020-10-27 17:58:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-27 17:58:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2891 transitions. [2020-10-27 17:58:32,233 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2891 transitions. Word has length 24 [2020-10-27 17:58:32,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:58:32,234 INFO L481 AbstractCegarLoop]: Abstraction has 1884 states and 2891 transitions. [2020-10-27 17:58:32,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:58:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2891 transitions. [2020-10-27 17:58:32,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 17:58:32,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:58:32,245 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:58:32,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:58:32,246 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:58:32,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:58:32,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1910687866, now seen corresponding path program 1 times [2020-10-27 17:58:32,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:58:32,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750214833] [2020-10-27 17:58:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:58:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:32,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:33,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:33,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:33,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 17:58:33,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:58:33,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-10-27 17:58:33,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:58:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 17:58:33,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 17:58:33,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:58:33,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:58:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:33,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:33,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:33,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:58:33,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:58:33,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 17:58:33,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:58:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:58:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:58:33,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 17:58:33,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:58:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:33,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:34,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:34,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 17:58:34,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:58:34,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 17:58:34,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:58:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:58:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 17:58:34,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:58:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:58:34,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750214833] [2020-10-27 17:58:34,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:58:34,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:58:34,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302851240] [2020-10-27 17:58:34,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:58:34,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:58:34,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:58:34,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:58:34,287 INFO L87 Difference]: Start difference. First operand 1884 states and 2891 transitions. Second operand 5 states. [2020-10-27 17:58:34,813 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 17:58:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:58:50,630 INFO L93 Difference]: Finished difference Result 2977 states and 4833 transitions. [2020-10-27 17:58:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:58:50,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-27 17:58:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:58:50,644 INFO L225 Difference]: With dead ends: 2977 [2020-10-27 17:58:50,645 INFO L226 Difference]: Without dead ends: 1899 [2020-10-27 17:58:50,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 17:58:50,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-10-27 17:58:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1884. [2020-10-27 17:58:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-27 17:58:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2889 transitions. [2020-10-27 17:58:50,712 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2889 transitions. Word has length 93 [2020-10-27 17:58:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:58:50,713 INFO L481 AbstractCegarLoop]: Abstraction has 1884 states and 2889 transitions. [2020-10-27 17:58:50,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:58:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2889 transitions. [2020-10-27 17:58:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 17:58:50,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:58:50,715 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:58:50,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:58:50,716 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:58:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:58:50,717 INFO L82 PathProgramCache]: Analyzing trace with hash -471670915, now seen corresponding path program 1 times [2020-10-27 17:58:50,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:58:50,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147163878] [2020-10-27 17:58:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:58:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:50,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:52,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:52,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 17:58:52,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:58:52,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1247 [2020-10-27 17:58:52,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:58:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 17:58:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 17:58:52,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:58:52,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:58:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:52,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:52,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:58:52,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:58:52,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:58:52,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:58:52,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:58:52,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:58:52,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:58:52,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:58:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:52,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:52,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:52,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 17:58:52,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:58:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 17:58:52,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:58:52,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:58:52,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 17:58:52,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:58:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:58:52,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147163878] [2020-10-27 17:58:52,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:58:52,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:58:52,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265349445] [2020-10-27 17:58:52,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:58:52,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:58:52,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:58:52,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:58:52,395 INFO L87 Difference]: Start difference. First operand 1884 states and 2889 transitions. Second operand 5 states. [2020-10-27 17:59:11,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:59:11,653 INFO L93 Difference]: Finished difference Result 5446 states and 8398 transitions. [2020-10-27 17:59:11,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:59:11,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-27 17:59:11,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:59:11,681 INFO L225 Difference]: With dead ends: 5446 [2020-10-27 17:59:11,682 INFO L226 Difference]: Without dead ends: 3568 [2020-10-27 17:59:11,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:59:11,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2020-10-27 17:59:11,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3548. [2020-10-27 17:59:11,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3548 states. [2020-10-27 17:59:11,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 5066 transitions. [2020-10-27 17:59:11,809 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 5066 transitions. Word has length 100 [2020-10-27 17:59:11,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:59:11,810 INFO L481 AbstractCegarLoop]: Abstraction has 3548 states and 5066 transitions. [2020-10-27 17:59:11,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:59:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 5066 transitions. [2020-10-27 17:59:11,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 17:59:11,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:59:11,825 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:59:11,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:59:11,825 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:59:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:59:11,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1206531254, now seen corresponding path program 1 times [2020-10-27 17:59:11,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:59:11,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007204412] [2020-10-27 17:59:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:59:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:59:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:12,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:12,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:59:12,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 17:59:12,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:59:12,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-27 17:59:12,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:59:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:59:12,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 17:59:12,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 17:59:12,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:59:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:59:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:59:12,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:59:13,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:59:13,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:59:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:59:13,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:59:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:59:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:59:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:59:13,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:59:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:59:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:59:13,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:13,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:59:13,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 17:59:13,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:59:13,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 17:59:13,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:59:13,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:59:13,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:59:13,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 17:59:13,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:59:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:59:13,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007204412] [2020-10-27 17:59:13,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:59:13,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:59:13,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013481165] [2020-10-27 17:59:13,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:59:13,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:59:13,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:59:13,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:59:13,265 INFO L87 Difference]: Start difference. First operand 3548 states and 5066 transitions. Second operand 5 states. [2020-10-27 17:59:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:59:38,162 INFO L93 Difference]: Finished difference Result 10391 states and 15018 transitions. [2020-10-27 17:59:38,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:59:38,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-27 17:59:38,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:59:38,221 INFO L225 Difference]: With dead ends: 10391 [2020-10-27 17:59:38,221 INFO L226 Difference]: Without dead ends: 6849 [2020-10-27 17:59:38,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 17:59:38,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6849 states. [2020-10-27 17:59:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6849 to 6833. [2020-10-27 17:59:38,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6833 states. [2020-10-27 17:59:38,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 9383 transitions. [2020-10-27 17:59:38,485 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 9383 transitions. Word has length 101 [2020-10-27 17:59:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:59:38,487 INFO L481 AbstractCegarLoop]: Abstraction has 6833 states and 9383 transitions. [2020-10-27 17:59:38,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:59:38,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 9383 transitions. [2020-10-27 17:59:38,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 17:59:38,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:59:38,491 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:59:38,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:59:38,492 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:59:38,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:59:38,493 INFO L82 PathProgramCache]: Analyzing trace with hash 6653058, now seen corresponding path program 1 times [2020-10-27 17:59:38,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:59:38,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134854048] [2020-10-27 17:59:38,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:59:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:59:38,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:38,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:39,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:39,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:59:39,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 17:59:39,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:59:39,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-27 17:59:39,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:59:39,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:59:39,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-27 17:59:39,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 17:59:39,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:59:39,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:59:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:59:39,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:39,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:59:39,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:59:39,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:59:39,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:59:39,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:59:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:59:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:59:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:59:39,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:59:39,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:59:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:59:39,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:39,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:59:39,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:59:39,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:59:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 17:59:39,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:59:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:59:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:59:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 17:59:39,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:59:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:59:39,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134854048] [2020-10-27 17:59:39,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:59:39,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:59:39,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076969976] [2020-10-27 17:59:39,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:59:39,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:59:39,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:59:39,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:59:39,968 INFO L87 Difference]: Start difference. First operand 6833 states and 9383 transitions. Second operand 5 states. [2020-10-27 18:00:13,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:00:13,189 INFO L93 Difference]: Finished difference Result 13716 states and 20432 transitions. [2020-10-27 18:00:13,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:00:13,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-27 18:00:13,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:00:13,268 INFO L225 Difference]: With dead ends: 13716 [2020-10-27 18:00:13,268 INFO L226 Difference]: Without dead ends: 10154 [2020-10-27 18:00:13,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 18:00:13,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10154 states. [2020-10-27 18:00:13,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10154 to 10098. [2020-10-27 18:00:13,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10098 states. [2020-10-27 18:00:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10098 states to 10098 states and 13309 transitions. [2020-10-27 18:00:13,638 INFO L78 Accepts]: Start accepts. Automaton has 10098 states and 13309 transitions. Word has length 110 [2020-10-27 18:00:13,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:00:13,639 INFO L481 AbstractCegarLoop]: Abstraction has 10098 states and 13309 transitions. [2020-10-27 18:00:13,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:00:13,639 INFO L276 IsEmpty]: Start isEmpty. Operand 10098 states and 13309 transitions. [2020-10-27 18:00:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 18:00:13,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:00:13,643 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 18:00:13,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:00:13,643 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:00:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:00:13,644 INFO L82 PathProgramCache]: Analyzing trace with hash 966025598, now seen corresponding path program 1 times [2020-10-27 18:00:13,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:00:13,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396344359] [2020-10-27 18:00:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:00:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:14,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:14,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 18:00:14,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:00:14,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1253 [2020-10-27 18:00:14,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:14,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:00:14,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-27 18:00:14,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 18:00:14,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:00:15,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:00:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:15,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:15,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:15,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:00:15,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:00:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:00:15,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:00:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:00:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:00:15,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:00:15,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:00:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:15,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:15,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:15,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:00:15,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:00:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 18:00:15,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:00:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:00:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 18:00:15,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:00:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:00:15,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396344359] [2020-10-27 18:00:15,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:00:15,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:00:15,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869823318] [2020-10-27 18:00:15,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:00:15,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:00:15,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:00:15,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:00:15,514 INFO L87 Difference]: Start difference. First operand 10098 states and 13309 transitions. Second operand 5 states. [2020-10-27 18:00:16,393 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 18:00:48,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:00:48,194 INFO L93 Difference]: Finished difference Result 28330 states and 38353 transitions. [2020-10-27 18:00:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:00:48,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-27 18:00:48,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:00:48,302 INFO L225 Difference]: With dead ends: 28330 [2020-10-27 18:00:48,302 INFO L226 Difference]: Without dead ends: 18238 [2020-10-27 18:00:48,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:00:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2020-10-27 18:00:48,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 18221. [2020-10-27 18:00:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18221 states. [2020-10-27 18:00:48,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18221 states to 18221 states and 23276 transitions. [2020-10-27 18:00:48,988 INFO L78 Accepts]: Start accepts. Automaton has 18221 states and 23276 transitions. Word has length 129 [2020-10-27 18:00:48,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:00:48,989 INFO L481 AbstractCegarLoop]: Abstraction has 18221 states and 23276 transitions. [2020-10-27 18:00:48,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:00:48,990 INFO L276 IsEmpty]: Start isEmpty. Operand 18221 states and 23276 transitions. [2020-10-27 18:00:48,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-27 18:00:48,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:00:48,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:00:48,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:00:48,996 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:00:48,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:00:48,996 INFO L82 PathProgramCache]: Analyzing trace with hash 998283486, now seen corresponding path program 1 times [2020-10-27 18:00:48,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:00:48,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913191241] [2020-10-27 18:00:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:00:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:49,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:49,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:53,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:53,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 18:00:53,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:00:53,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4404 [2020-10-27 18:00:53,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:00:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-27 18:00:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 18:00:53,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:00:53,640 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:00:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:00:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:53,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:53,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:53,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:00:53,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:00:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:00:53,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:00:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:00:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:00:53,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:00:53,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:00:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:53,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:53,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 18:00:53,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:00:53,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:00:53,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:53,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:00:53,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:00:53,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:00:53,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:00:53,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 18:00:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:53,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:53,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:53,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:00:53,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:00:53,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 18:00:53,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:00:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:00:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:00:53,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:00:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-27 18:00:53,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913191241] [2020-10-27 18:00:53,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:00:53,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:00:53,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823524780] [2020-10-27 18:00:53,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:00:53,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:00:53,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:00:53,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:00:53,914 INFO L87 Difference]: Start difference. First operand 18221 states and 23276 transitions. Second operand 5 states. [2020-10-27 18:00:55,346 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 18:01:22,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:01:22,499 INFO L93 Difference]: Finished difference Result 44613 states and 58671 transitions. [2020-10-27 18:01:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:01:22,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-27 18:01:22,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:01:22,600 INFO L225 Difference]: With dead ends: 44613 [2020-10-27 18:01:22,600 INFO L226 Difference]: Without dead ends: 26398 [2020-10-27 18:01:22,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 18:01:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26398 states. [2020-10-27 18:01:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26398 to 26327. [2020-10-27 18:01:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26327 states. [2020-10-27 18:01:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26327 states to 26327 states and 33430 transitions. [2020-10-27 18:01:23,266 INFO L78 Accepts]: Start accepts. Automaton has 26327 states and 33430 transitions. Word has length 180 [2020-10-27 18:01:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:01:23,267 INFO L481 AbstractCegarLoop]: Abstraction has 26327 states and 33430 transitions. [2020-10-27 18:01:23,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:01:23,267 INFO L276 IsEmpty]: Start isEmpty. Operand 26327 states and 33430 transitions. [2020-10-27 18:01:23,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-27 18:01:23,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:01:23,273 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, 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 18:01:23,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:01:23,273 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:01:23,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:01:23,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1080282585, now seen corresponding path program 1 times [2020-10-27 18:01:23,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:01:23,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190527798] [2020-10-27 18:01:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:01:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:01:23,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:01:23,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:01:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:01:25,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:01:28,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:01:28,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:01:28,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:01:28,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4846 [2020-10-27 18:01:28,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:01:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:01:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-27 18:01:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 18:01:28,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:01:28,341 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:01:28,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:01:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:01:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:01:28,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:01:28,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:01:28,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:01:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:01:28,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:01:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:01:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:01:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:01:28,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:01:28,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:01:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:01:28,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:01:28,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:01:28,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:01:28,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:01:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:01:28,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:01:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:01:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:01:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:01:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:01:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 18:01:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:01:28,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:01:28,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:01:28,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:01:28,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:01:28,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 18:01:28,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:01:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:01:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:01:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 18:01:28,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:01:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 18:01:28,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190527798] [2020-10-27 18:01:28,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:01:28,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:01:28,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088890661] [2020-10-27 18:01:28,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:01:28,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:01:28,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:01:28,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:01:28,666 INFO L87 Difference]: Start difference. First operand 26327 states and 33430 transitions. Second operand 5 states.