/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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:04:20,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:04:20,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:04:20,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:04:20,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:04:20,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:04:20,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:04:20,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:04:20,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:04:20,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:04:20,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:04:20,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:04:20,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:04:20,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:04:20,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:04:20,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:04:20,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:04:20,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:04:20,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:04:20,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:04:20,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:04:20,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:04:20,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:04:20,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:04:20,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:04:20,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:04:20,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:04:20,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:04:20,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:04:20,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:04:20,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:04:20,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:04:20,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:04:20,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:04:20,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:04:20,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:04:20,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:04:20,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:04:20,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:04:20,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:04:20,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:04:20,221 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 16:04:20,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:04:20,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:04:20,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:04:20,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:04:20,283 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:04:20,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:04:20,283 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:04:20,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:04:20,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:04:20,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:04:20,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:04:20,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:04:20,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:04:20,285 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:04:20,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:04:20,286 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:04:20,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:04:20,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:04:20,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:04:20,287 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:04:20,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:04:20,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:04:20,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:04:20,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:04:20,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:04:20,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:04:20,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:04:20,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:04:20,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:04:20,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:04:20,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:04:20,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:04:20,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:04:20,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:04:20,745 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:04:20,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label53.c [2020-10-27 16:04:20,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/349246e11/44613b621c524cce8a9b9b8dcc4e048b/FLAG27c02c896 [2020-10-27 16:04:21,985 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:04:21,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label53.c [2020-10-27 16:04:22,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/349246e11/44613b621c524cce8a9b9b8dcc4e048b/FLAG27c02c896 [2020-10-27 16:04:22,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/349246e11/44613b621c524cce8a9b9b8dcc4e048b [2020-10-27 16:04:22,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:04:22,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:04:22,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:04:22,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:04:22,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:04:22,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:04:22" (1/1) ... [2020-10-27 16:04:22,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66fb7364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:04:22, skipping insertion in model container [2020-10-27 16:04:22,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:04:22" (1/1) ... [2020-10-27 16:04:22,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:04:22,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:04:23,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:04:24,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:04:24,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:04:24,819 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:04:24,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:04:24 WrapperNode [2020-10-27 16:04:24,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:04:24,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:04:24,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:04:24,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:04:24,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:04:24" (1/1) ... [2020-10-27 16:04:24,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:04:24" (1/1) ... [2020-10-27 16:04:24,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:04:24" (1/1) ... [2020-10-27 16:04:24,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:04:24" (1/1) ... [2020-10-27 16:04:25,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:04:24" (1/1) ... [2020-10-27 16:04:25,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:04:24" (1/1) ... [2020-10-27 16:04:25,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:04:24" (1/1) ... [2020-10-27 16:04:25,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:04:25,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:04:25,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:04:25,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:04:25,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:04:24" (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 16:04:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:04:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:04:25,278 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:04:25,278 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:04:25,278 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:04:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:04:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:04:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:04:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:04:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:04:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:04:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:04:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:04:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:04:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:04:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:04:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:04:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:04:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:04:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:04:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:04:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:04:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:04:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:04:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:04:30,771 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:04:30,772 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:04:30,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:04:30 BoogieIcfgContainer [2020-10-27 16:04:30,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:04:30,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:04:30,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:04:30,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:04:30,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:04:22" (1/3) ... [2020-10-27 16:04:30,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c0cc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:04:30, skipping insertion in model container [2020-10-27 16:04:30,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:04:24" (2/3) ... [2020-10-27 16:04:30,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c0cc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:04:30, skipping insertion in model container [2020-10-27 16:04:30,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:04:30" (3/3) ... [2020-10-27 16:04:30,786 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label53.c [2020-10-27 16:04:30,798 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:04:30,803 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:04:30,817 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:04:30,853 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:04:30,853 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:04:30,853 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:04:30,853 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:04:30,854 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:04:30,854 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:04:30,854 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:04:30,854 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:04:30,940 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-27 16:04:31,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2020-10-27 16:04:31,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:04:31,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:04:31,007 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:04:31,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:04:31,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1345236748, now seen corresponding path program 1 times [2020-10-27 16:04:31,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:04:31,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020145032] [2020-10-27 16:04:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:04:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:04:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:36,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:37,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:04:37,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 824 [2020-10-27 16:04:37,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:04:37,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5324 [2020-10-27 16:04:37,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:04:37,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:04:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:04:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 815 [2020-10-27 16:04:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 16:04:38,162 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:04:38,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:04:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:04:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:38,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:04:38,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:04:38,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:04:38,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 16:04:38,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:04:38,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:04:38,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:04:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:04:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:04:39,169 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 16:04:39,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020145032] [2020-10-27 16:04:39,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:04:39,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 16:04:39,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491476893] [2020-10-27 16:04:39,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 16:04:39,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:04:39,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 16:04:39,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 16:04:39,198 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-27 16:04:39,460 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:04:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:04:50,427 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-27 16:04:50,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:04:50,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 808 [2020-10-27 16:04:50,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:04:50,473 INFO L225 Difference]: With dead ends: 2677 [2020-10-27 16:04:50,474 INFO L226 Difference]: Without dead ends: 1703 [2020-10-27 16:04:50,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:04:50,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-27 16:04:50,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-27 16:04:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-27 16:04:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3006 transitions. [2020-10-27 16:04:50,693 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3006 transitions. Word has length 808 [2020-10-27 16:04:50,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:04:50,697 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3006 transitions. [2020-10-27 16:04:50,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 16:04:50,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3006 transitions. [2020-10-27 16:04:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2020-10-27 16:04:50,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:04:50,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:04:50,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:04:50,735 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:04:50,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:04:50,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1385872682, now seen corresponding path program 1 times [2020-10-27 16:04:50,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:04:50,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515587440] [2020-10-27 16:04:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:04:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:04:50,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:52,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:55,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:55,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:04:55,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 834 [2020-10-27 16:04:55,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:04:55,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-27 16:04:55,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:04:55,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:04:55,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 16:04:55,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 812 [2020-10-27 16:04:55,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 16:04:56,564 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:04:56,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:04:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:04:56,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:56,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:04:56,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:04:56,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:04:56,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 16:04:56,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:04:56,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:04:56,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:04:56,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:04:56,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:04:56,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:04:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:04:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:56,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:04:56,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:04:56,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:04:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:04:56,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:04:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:04:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:04:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 16:04:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:04:57,804 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 16:04:57,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515587440] [2020-10-27 16:04:57,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:04:57,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:04:57,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514290028] [2020-10-27 16:04:57,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:04:57,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:04:57,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:04:57,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:04:57,810 INFO L87 Difference]: Start difference. First operand 1690 states and 3006 transitions. Second operand 6 states. [2020-10-27 16:04:58,027 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:04:58,531 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 16:05:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:05:15,770 INFO L93 Difference]: Finished difference Result 6771 states and 12193 transitions. [2020-10-27 16:05:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:05:15,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 816 [2020-10-27 16:05:15,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:05:15,805 INFO L225 Difference]: With dead ends: 6771 [2020-10-27 16:05:15,805 INFO L226 Difference]: Without dead ends: 5087 [2020-10-27 16:05:15,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:05:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5087 states. [2020-10-27 16:05:15,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5087 to 5079. [2020-10-27 16:05:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5079 states. [2020-10-27 16:05:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 7646 transitions. [2020-10-27 16:05:16,001 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 7646 transitions. Word has length 816 [2020-10-27 16:05:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:05:16,003 INFO L481 AbstractCegarLoop]: Abstraction has 5079 states and 7646 transitions. [2020-10-27 16:05:16,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:05:16,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 7646 transitions. [2020-10-27 16:05:16,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2020-10-27 16:05:16,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:05:16,030 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, 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] [2020-10-27 16:05:16,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:05:16,030 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:05:16,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:05:16,032 INFO L82 PathProgramCache]: Analyzing trace with hash -916041703, now seen corresponding path program 1 times [2020-10-27 16:05:16,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:05:16,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023525743] [2020-10-27 16:05:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:05:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:16,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:20,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:21,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:21,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 899 [2020-10-27 16:05:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:05:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 16:05:21,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 16:05:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 16:05:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-27 16:05:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:23,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:05:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:23,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:23,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:23,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:05:23,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:23,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:05:23,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:05:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:05:23,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:05:23,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:23,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:05:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:23,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:24,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:24,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 16:05:24,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 16:05:24,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:05:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:05:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 16:05:24,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 69 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:05:30,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023525743] [2020-10-27 16:05:30,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:05:30,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 16:05:30,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459392292] [2020-10-27 16:05:30,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 16:05:30,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:05:30,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 16:05:30,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-27 16:05:30,070 INFO L87 Difference]: Start difference. First operand 5079 states and 7646 transitions. Second operand 19 states. [2020-10-27 16:05:32,017 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 16:05:32,267 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 16:05:40,997 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 16:05:41,257 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 16:05:48,673 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 16:05:50,441 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 16:05:50,703 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 16:05:50,945 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 16:05:52,704 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 16:05:53,141 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2020-10-27 16:05:54,569 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 16:06:00,073 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 16:06:00,279 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 16:06:02,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:06:02,946 INFO L93 Difference]: Finished difference Result 10920 states and 16862 transitions. [2020-10-27 16:06:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:06:02,951 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 881 [2020-10-27 16:06:02,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:06:02,983 INFO L225 Difference]: With dead ends: 10920 [2020-10-27 16:06:02,984 INFO L226 Difference]: Without dead ends: 5847 [2020-10-27 16:06:02,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2020-10-27 16:06:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2020-10-27 16:06:03,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 5839. [2020-10-27 16:06:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5839 states. [2020-10-27 16:06:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 8418 transitions. [2020-10-27 16:06:03,156 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 8418 transitions. Word has length 881 [2020-10-27 16:06:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:06:03,158 INFO L481 AbstractCegarLoop]: Abstraction has 5839 states and 8418 transitions. [2020-10-27 16:06:03,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 16:06:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 8418 transitions. [2020-10-27 16:06:03,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2020-10-27 16:06:03,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:06:03,185 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:06:03,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:06:03,185 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:06:03,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:06:03,186 INFO L82 PathProgramCache]: Analyzing trace with hash 917391645, now seen corresponding path program 1 times [2020-10-27 16:06:03,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:06:03,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299828897] [2020-10-27 16:06:03,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:06:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:06:03,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:04,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:08,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:06:08,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 945 [2020-10-27 16:06:08,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:06:08,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 16:06:08,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:06:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 16:06:08,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-27 16:06:08,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 762 [2020-10-27 16:06:08,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:06:10,953 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2020-10-27 16:06:11,170 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-27 16:06:11,389 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2020-10-27 16:06:11,565 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-27 16:06:11,758 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-10-27 16:06:11,973 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-10-27 16:06:12,145 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-10-27 16:06:12,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:06:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:06:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:12,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:06:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:06:12,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:06:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:06:12,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:06:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:06:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:06:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:06:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:06:12,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:06:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:06:12,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:12,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:06:12,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 16:06:12,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:06:12,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 16:06:12,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:06:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:06:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:06:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 16:06:12,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:06:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 115 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:06:19,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299828897] [2020-10-27 16:06:19,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:06:19,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 16:06:19,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746259071] [2020-10-27 16:06:19,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 16:06:19,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:06:19,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 16:06:19,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2020-10-27 16:06:19,921 INFO L87 Difference]: Start difference. First operand 5839 states and 8418 transitions. Second operand 19 states. [2020-10-27 16:06:23,353 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 16:06:23,614 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 16:06:31,366 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 16:06:34,079 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 16:06:34,476 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 16:06:35,033 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 131 [2020-10-27 16:06:37,868 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 130 [2020-10-27 16:06:40,113 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 127 [2020-10-27 16:06:45,945 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 16:06:46,435 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 121 [2020-10-27 16:06:55,793 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 116 [2020-10-27 16:06:57,009 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 16:06:57,228 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 16:06:59,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:06:59,137 INFO L93 Difference]: Finished difference Result 12462 states and 18435 transitions. [2020-10-27 16:06:59,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 16:06:59,139 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 927 [2020-10-27 16:06:59,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:06:59,174 INFO L225 Difference]: With dead ends: 12462 [2020-10-27 16:06:59,175 INFO L226 Difference]: Without dead ends: 6629 [2020-10-27 16:06:59,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2020-10-27 16:06:59,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6629 states. [2020-10-27 16:06:59,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6629 to 6617. [2020-10-27 16:06:59,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6617 states. [2020-10-27 16:06:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6617 states to 6617 states and 9218 transitions. [2020-10-27 16:06:59,361 INFO L78 Accepts]: Start accepts. Automaton has 6617 states and 9218 transitions. Word has length 927 [2020-10-27 16:06:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:06:59,363 INFO L481 AbstractCegarLoop]: Abstraction has 6617 states and 9218 transitions. [2020-10-27 16:06:59,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 16:06:59,364 INFO L276 IsEmpty]: Start isEmpty. Operand 6617 states and 9218 transitions. [2020-10-27 16:06:59,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2020-10-27 16:06:59,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:06:59,392 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:06:59,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:06:59,393 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:06:59,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:06:59,394 INFO L82 PathProgramCache]: Analyzing trace with hash -610481679, now seen corresponding path program 1 times [2020-10-27 16:06:59,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:06:59,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909484079] [2020-10-27 16:06:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:06:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:06:59,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:59,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:04,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:07:04,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 951 [2020-10-27 16:07:04,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:07:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-27 16:07:04,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:07:04,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 16:07:04,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 16:07:04,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 713 [2020-10-27 16:07:04,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:07:06,102 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 27 [2020-10-27 16:07:06,383 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2020-10-27 16:07:06,548 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-27 16:07:06,713 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-10-27 16:07:06,870 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-10-27 16:07:06,992 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-10-27 16:07:07,117 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-10-27 16:07:07,249 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-10-27 16:07:07,843 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:07:07,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:07:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:07:07,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:07,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:07:07,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:07:07,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:07:07,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:07:07,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:07:07,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:07:07,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:07:07,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:07:07,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:07:07,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:07:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:07:07,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:08,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:07:08,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 16:07:08,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:07:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 16:07:08,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:07:08,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:07:08,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:07:08,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-27 16:07:08,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:07:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 121 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:07:13,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909484079] [2020-10-27 16:07:13,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:07:13,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 16:07:13,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51556662] [2020-10-27 16:07:13,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 16:07:13,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:07:13,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 16:07:13,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-10-27 16:07:13,291 INFO L87 Difference]: Start difference. First operand 6617 states and 9218 transitions. Second operand 19 states. [2020-10-27 16:07:16,243 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 16:07:16,516 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 16:07:21,497 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 16:07:24,322 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 16:07:25,458 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-27 16:07:25,904 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2020-10-27 16:07:30,292 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-27 16:07:32,587 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2020-10-27 16:07:35,151 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-27 16:07:35,592 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-27 16:07:36,532 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-27 16:07:44,517 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2020-10-27 16:07:44,907 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2020-10-27 16:07:45,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:07:45,914 INFO L93 Difference]: Finished difference Result 13940 states and 19908 transitions. [2020-10-27 16:07:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:07:45,916 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 933 [2020-10-27 16:07:45,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:07:45,949 INFO L225 Difference]: With dead ends: 13940 [2020-10-27 16:07:45,950 INFO L226 Difference]: Without dead ends: 7329 [2020-10-27 16:07:45,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2020-10-27 16:07:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7329 states. [2020-10-27 16:07:46,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7329 to 7321. [2020-10-27 16:07:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7321 states. [2020-10-27 16:07:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7321 states to 7321 states and 9935 transitions. [2020-10-27 16:07:46,144 INFO L78 Accepts]: Start accepts. Automaton has 7321 states and 9935 transitions. Word has length 933 [2020-10-27 16:07:46,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:07:46,145 INFO L481 AbstractCegarLoop]: Abstraction has 7321 states and 9935 transitions. [2020-10-27 16:07:46,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 16:07:46,145 INFO L276 IsEmpty]: Start isEmpty. Operand 7321 states and 9935 transitions. [2020-10-27 16:07:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2020-10-27 16:07:46,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:07:46,175 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:07:46,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:07:46,176 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:07:46,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:07:46,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1183833331, now seen corresponding path program 1 times [2020-10-27 16:07:46,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:07:46,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639077585] [2020-10-27 16:07:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:07:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:07:46,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:46,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:51,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:07:51,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-27 16:07:51,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:07:51,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 16:07:51,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:07:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:07:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-27 16:07:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 657 [2020-10-27 16:07:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:07:54,013 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-27 16:07:54,151 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-27 16:07:54,286 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-27 16:07:54,432 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-27 16:07:54,601 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-10-27 16:07:54,776 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-10-27 16:07:54,979 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-10-27 16:07:55,224 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2020-10-27 16:07:55,513 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 50 [2020-10-27 16:07:55,805 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 46 [2020-10-27 16:07:56,065 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2020-10-27 16:07:56,202 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:07:56,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:07:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:07:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:56,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:07:56,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:07:56,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:07:56,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:07:56,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:07:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:07:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:07:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:07:56,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:07:56,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:07:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:07:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:56,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:07:56,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 16:07:56,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:07:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 16:07:56,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:07:56,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:07:56,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:07:56,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 16:07:56,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0