/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/Problem06_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:34:14,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:34:14,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:34:14,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:34:14,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:34:14,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:34:14,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:34:14,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:34:14,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:34:14,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:34:14,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:34:14,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:34:14,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:34:14,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:34:14,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:34:14,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:34:14,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:34:14,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:34:14,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:34:14,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:34:14,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:34:14,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:34:14,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:34:14,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:34:14,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:34:14,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:34:14,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:34:14,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:34:14,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:34:14,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:34:14,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:34:14,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:34:14,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:34:14,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:34:14,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:34:14,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:34:14,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:34:14,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:34:14,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:34:14,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:34:14,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:34:14,984 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 16:34:15,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:34:15,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:34:15,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:34:15,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:34:15,036 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:34:15,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:34:15,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:34:15,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:34:15,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:34:15,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:34:15,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:34:15,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:34:15,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:34:15,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:34:15,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:34:15,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:34:15,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:34:15,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:34:15,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:34:15,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:34:15,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:34:15,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:34:15,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:34:15,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:34:15,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:34:15,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:34:15,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:34:15,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:34:15,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:34:15,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:34:15,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:34:15,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:34:15,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:34:15,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:34:15,441 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:34:15,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label43.c [2020-10-27 16:34:15,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/866894fd2/aa8bc1321bc3435f95c8cb2bf8cb0622/FLAGc30e7cd75 [2020-10-27 16:34:16,809 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:34:16,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label43.c [2020-10-27 16:34:16,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/866894fd2/aa8bc1321bc3435f95c8cb2bf8cb0622/FLAGc30e7cd75 [2020-10-27 16:34:16,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/866894fd2/aa8bc1321bc3435f95c8cb2bf8cb0622 [2020-10-27 16:34:16,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:34:16,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:34:16,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:34:16,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:34:16,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:34:16,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:34:16" (1/1) ... [2020-10-27 16:34:16,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e941083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:16, skipping insertion in model container [2020-10-27 16:34:16,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:34:16" (1/1) ... [2020-10-27 16:34:17,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:34:17,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:34:19,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:34:19,274 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:34:20,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:34:20,406 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:34:20,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:20 WrapperNode [2020-10-27 16:34:20,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:34:20,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:34:20,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:34:20,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:34:20,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:20" (1/1) ... [2020-10-27 16:34:20,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:20" (1/1) ... [2020-10-27 16:34:20,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:20" (1/1) ... [2020-10-27 16:34:20,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:20" (1/1) ... [2020-10-27 16:34:20,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:20" (1/1) ... [2020-10-27 16:34:20,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:20" (1/1) ... [2020-10-27 16:34:20,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:20" (1/1) ... [2020-10-27 16:34:21,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:34:21,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:34:21,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:34:21,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:34:21,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:20" (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 16:34:21,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:34:21,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:34:21,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:34:21,344 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:34:21,344 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:34:21,344 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:34:21,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:34:21,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:34:21,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:34:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:34:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:34:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:34:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:34:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:34:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:34:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:34:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:34:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:34:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:34:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:34:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:34:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:34:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:34:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:34:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:34:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:34:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:34:29,198 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:34:29,199 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:34:29,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:34:29 BoogieIcfgContainer [2020-10-27 16:34:29,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:34:29,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:34:29,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:34:29,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:34:29,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:34:16" (1/3) ... [2020-10-27 16:34:29,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4252500e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:34:29, skipping insertion in model container [2020-10-27 16:34:29,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:20" (2/3) ... [2020-10-27 16:34:29,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4252500e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:34:29, skipping insertion in model container [2020-10-27 16:34:29,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:34:29" (3/3) ... [2020-10-27 16:34:29,217 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label43.c [2020-10-27 16:34:29,229 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:34:29,235 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:34:29,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:34:29,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:34:29,300 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:34:29,300 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:34:29,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:34:29,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:34:29,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:34:29,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:34:29,301 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:34:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:34:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2020-10-27 16:34:29,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:34:29,441 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:29,441 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:34:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:34:29,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1511320812, now seen corresponding path program 1 times [2020-10-27 16:34:29,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:34:29,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782012442] [2020-10-27 16:34:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:34:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:31,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:32,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:35,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:35,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-27 16:34:35,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:34:35,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 16:34:35,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 16:34:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:34:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-27 16:34:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:34:42,614 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 16:34:43,199 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2020-10-27 16:34:43,764 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2020-10-27 16:34:44,411 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 93 [2020-10-27 16:34:44,795 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 75 [2020-10-27 16:34:45,088 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-27 16:34:45,404 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-27 16:34:45,686 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2020-10-27 16:34:45,970 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2020-10-27 16:34:46,280 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2020-10-27 16:34:46,568 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-10-27 16:34:46,868 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 63 [2020-10-27 16:34:47,189 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 64 [2020-10-27 16:34:47,547 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 61 [2020-10-27 16:34:47,838 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:34:47,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:34:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:47,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:47,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:47,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:34:47,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:47,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 16:34:47,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:47,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:34:47,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:34:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:04,672 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 16:35:04,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782012442] [2020-10-27 16:35:04,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:35:04,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 16:35:04,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525040148] [2020-10-27 16:35:04,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 16:35:04,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:35:04,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 16:35:04,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-27 16:35:04,714 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-27 16:35:05,276 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 16:35:06,320 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 198 [2020-10-27 16:35:07,565 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 230 DAG size of output: 203 [2020-10-27 16:35:08,920 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 247 DAG size of output: 213 [2020-10-27 16:35:14,473 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 260 DAG size of output: 212 [2020-10-27 16:35:19,130 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 264 DAG size of output: 211 [2020-10-27 16:35:22,489 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 224 DAG size of output: 200 [2020-10-27 16:35:23,786 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 236 DAG size of output: 210 [2020-10-27 16:35:25,405 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 234 DAG size of output: 209 [2020-10-27 16:35:37,361 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 219 DAG size of output: 198 [2020-10-27 16:35:38,600 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 229 DAG size of output: 207 [2020-10-27 16:35:42,515 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 227 DAG size of output: 206 [2020-10-27 16:35:51,790 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 216 DAG size of output: 197 [2020-10-27 16:35:53,048 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 225 DAG size of output: 206 [2020-10-27 16:35:56,392 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 229 DAG size of output: 202 [2020-10-27 16:36:11,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:36:11,719 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-27 16:36:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:36:11,723 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 993 [2020-10-27 16:36:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:36:11,775 INFO L225 Difference]: With dead ends: 3401 [2020-10-27 16:36:11,775 INFO L226 Difference]: Without dead ends: 2020 [2020-10-27 16:36:11,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 16:36:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-27 16:36:11,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-27 16:36:11,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-27 16:36:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-27 16:36:11,936 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 993 [2020-10-27 16:36:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:36:11,939 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-27 16:36:11,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 16:36:11,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-27 16:36:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2020-10-27 16:36:11,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:36:11,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:11,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:36:11,984 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:36:11,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:36:11,985 INFO L82 PathProgramCache]: Analyzing trace with hash 19740227, now seen corresponding path program 1 times [2020-10-27 16:36:11,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:36:11,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401473308] [2020-10-27 16:36:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:36:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:36:12,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:14,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:17,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:36:17,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1083 [2020-10-27 16:36:17,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:36:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 16:36:17,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:36:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:36:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:36:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 999 [2020-10-27 16:36:17,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:36:18,103 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:36:18,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:36:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:36:18,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:18,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:36:18,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:36:18,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:36:18,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:36:18,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:36:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:36:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:36:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:36:18,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:36:18,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:36:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:36:18,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:18,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:36:18,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:36:18,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:36:18,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 16:36:18,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:36:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:36:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:36:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:36:18,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:36:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:36:19,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401473308] [2020-10-27 16:36:19,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:36:19,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:36:19,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976532526] [2020-10-27 16:36:19,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:36:19,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:36:19,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:36:19,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:36:19,343 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 5 states. [2020-10-27 16:36:19,946 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:36:37,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:36:37,658 INFO L93 Difference]: Finished difference Result 4399 states and 7437 transitions. [2020-10-27 16:36:37,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:36:37,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1063 [2020-10-27 16:36:37,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:36:37,679 INFO L225 Difference]: With dead ends: 4399 [2020-10-27 16:36:37,679 INFO L226 Difference]: Without dead ends: 3139 [2020-10-27 16:36:37,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:36:37,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-10-27 16:36:37,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3088. [2020-10-27 16:36:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3088 states. [2020-10-27 16:36:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 4567 transitions. [2020-10-27 16:36:37,773 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 4567 transitions. Word has length 1063 [2020-10-27 16:36:37,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:36:37,775 INFO L481 AbstractCegarLoop]: Abstraction has 3088 states and 4567 transitions. [2020-10-27 16:36:37,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:36:37,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 4567 transitions. [2020-10-27 16:36:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2020-10-27 16:36:37,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:36:37,802 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:37,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:36:37,802 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:36:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:36:37,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1256087013, now seen corresponding path program 1 times [2020-10-27 16:36:37,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:36:37,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702769558] [2020-10-27 16:36:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:36:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:36:37,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:38,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:43,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:36:43,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1094 [2020-10-27 16:36:43,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:36:43,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-27 16:36:43,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:36:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:36:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:36:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 16:36:43,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:36:43,897 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:36:43,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:36:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:36:43,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:43,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:36:43,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:36:43,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:36:43,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:36:43,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:36:43,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:36:43,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:36:43,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:36:43,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:36:44,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:36:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:36:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:44,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:36:44,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:36:44,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:36:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 16:36:44,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:36:44,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:36:44,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:36:44,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:36:44,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:36:44,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:36:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:36:44,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:44,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:36:44,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:36:44,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:36:44,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 16:36:44,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:36:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:36:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:36:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:36:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:36:45,120 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:36:45,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702769558] [2020-10-27 16:36:45,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:36:45,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:36:45,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45753978] [2020-10-27 16:36:45,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:36:45,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:36:45,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:36:45,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:36:45,123 INFO L87 Difference]: Start difference. First operand 3088 states and 4567 transitions. Second operand 7 states. [2020-10-27 16:36:45,788 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:36:46,858 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:37:18,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:37:18,934 INFO L93 Difference]: Finished difference Result 9822 states and 15808 transitions. [2020-10-27 16:37:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:37:18,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1072 [2020-10-27 16:37:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:37:18,977 INFO L225 Difference]: With dead ends: 9822 [2020-10-27 16:37:18,977 INFO L226 Difference]: Without dead ends: 7494 [2020-10-27 16:37:18,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:37:18,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7494 states. [2020-10-27 16:37:19,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7494 to 7452. [2020-10-27 16:37:19,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7452 states. [2020-10-27 16:37:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 10433 transitions. [2020-10-27 16:37:19,196 INFO L78 Accepts]: Start accepts. Automaton has 7452 states and 10433 transitions. Word has length 1072 [2020-10-27 16:37:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:37:19,197 INFO L481 AbstractCegarLoop]: Abstraction has 7452 states and 10433 transitions. [2020-10-27 16:37:19,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:37:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states and 10433 transitions. [2020-10-27 16:37:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2020-10-27 16:37:19,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:37:19,230 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:19,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:37:19,230 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:37:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:37:19,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1450436893, now seen corresponding path program 1 times [2020-10-27 16:37:19,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:37:19,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437503495] [2020-10-27 16:37:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:37:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:19,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:19,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:21,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:24,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:24,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1098 [2020-10-27 16:37:24,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:37:24,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5294 [2020-10-27 16:37:24,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:37:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:37:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 16:37:24,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:25,156 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:37:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:37:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:25,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:25,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:25,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:37:25,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:25,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:37:25,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:25,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:37:25,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:37:25,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:37:25,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:25,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:37:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:25,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:25,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:25,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:37:25,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:25,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 16:37:25,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:25,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:37:25,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:37:25,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:37:25,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:25,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:37:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:25,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:25,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:25,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:37:25,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:25,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 16:37:25,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:25,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:37:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:37:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 16:37:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:37:26,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437503495] [2020-10-27 16:37:26,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:37:26,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:37:26,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422250029] [2020-10-27 16:37:26,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:37:26,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:37:26,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:37:26,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:37:26,231 INFO L87 Difference]: Start difference. First operand 7452 states and 10433 transitions. Second operand 7 states. [2020-10-27 16:37:26,966 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 16:37:28,046 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 16:37:46,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:37:46,945 INFO L93 Difference]: Finished difference Result 17886 states and 25713 transitions. [2020-10-27 16:37:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 16:37:46,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1076 [2020-10-27 16:37:46,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:37:47,018 INFO L225 Difference]: With dead ends: 17886 [2020-10-27 16:37:47,018 INFO L226 Difference]: Without dead ends: 11194 [2020-10-27 16:37:47,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 16:37:47,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11194 states. [2020-10-27 16:37:47,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11194 to 11057. [2020-10-27 16:37:47,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11057 states. [2020-10-27 16:37:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11057 states to 11057 states and 15077 transitions. [2020-10-27 16:37:47,404 INFO L78 Accepts]: Start accepts. Automaton has 11057 states and 15077 transitions. Word has length 1076 [2020-10-27 16:37:47,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:37:47,405 INFO L481 AbstractCegarLoop]: Abstraction has 11057 states and 15077 transitions. [2020-10-27 16:37:47,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:37:47,405 INFO L276 IsEmpty]: Start isEmpty. Operand 11057 states and 15077 transitions. [2020-10-27 16:37:47,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2020-10-27 16:37:47,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:37:47,454 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:47,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:37:47,456 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:37:47,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:37:47,457 INFO L82 PathProgramCache]: Analyzing trace with hash 827575666, now seen corresponding path program 1 times [2020-10-27 16:37:47,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:37:47,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98242821] [2020-10-27 16:37:47,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:37:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:49,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:51,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:52,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:52,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1101 [2020-10-27 16:37:52,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:37:52,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5162 [2020-10-27 16:37:52,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:37:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 16:37:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1000 [2020-10-27 16:37:52,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:54,087 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:37:54,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:37:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:54,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:54,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:37:54,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:54,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:37:54,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:37:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:37:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:37:54,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:54,217 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:37:54,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:37:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:54,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:54,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:54,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:37:54,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:54,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 16:37:54,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:37:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:37:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:37:54,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:54,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:37:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:54,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:54,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:54,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:37:54,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:54,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 16:37:54,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:37:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:37:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:37:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 16:37:55,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98242821] [2020-10-27 16:37:55,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:37:55,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:37:55,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300959083] [2020-10-27 16:37:55,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:37:55,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:37:55,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:37:55,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:37:55,678 INFO L87 Difference]: Start difference. First operand 11057 states and 15077 transitions. Second operand 6 states. [2020-10-27 16:37:56,392 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:37:57,130 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 160