/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/array-crafted/xor1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:07:14,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:07:14,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:07:14,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:07:14,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:07:14,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:07:14,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:07:14,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:07:14,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:07:14,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:07:14,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:07:14,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:07:14,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:07:14,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:07:14,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:07:14,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:07:14,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:07:14,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:07:14,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:07:14,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:07:14,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:07:14,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:07:14,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:07:14,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:07:14,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:07:14,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:07:14,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:07:14,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:07:14,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:07:14,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:07:14,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:07:14,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:07:14,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:07:14,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:07:14,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:07:14,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:07:14,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:07:14,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:07:14,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:07:14,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:07:14,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:07:14,212 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 14:07:14,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:07:14,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:07:14,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:07:14,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:07:14,272 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:07:14,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:07:14,273 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:07:14,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:07:14,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:07:14,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:07:14,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:07:14,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:07:14,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:07:14,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:07:14,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:07:14,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:07:14,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:07:14,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:07:14,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:07:14,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:07:14,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:07:14,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:07:14,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:07:14,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:07:14,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:07:14,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:07:14,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:07:14,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:07:14,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:07:14,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:07:14,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:07:14,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:07:14,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:07:14,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:07:14,770 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:07:14,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor1.i [2020-10-27 14:07:14,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c95952367/713bd33e0b9344aa9316d5380e8fed83/FLAG44435992c [2020-10-27 14:07:15,637 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:07:15,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/xor1.i [2020-10-27 14:07:15,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c95952367/713bd33e0b9344aa9316d5380e8fed83/FLAG44435992c [2020-10-27 14:07:16,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c95952367/713bd33e0b9344aa9316d5380e8fed83 [2020-10-27 14:07:16,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:07:16,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:07:16,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:07:16,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:07:16,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:07:16,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:07:16" (1/1) ... [2020-10-27 14:07:16,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fddb25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:07:16, skipping insertion in model container [2020-10-27 14:07:16,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:07:16" (1/1) ... [2020-10-27 14:07:16,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:07:16,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:07:16,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:07:16,240 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:07:16,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:07:16,285 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:07:16,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:07:16 WrapperNode [2020-10-27 14:07:16,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:07:16,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:07:16,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:07:16,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:07:16,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:07:16" (1/1) ... [2020-10-27 14:07:16,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:07:16" (1/1) ... [2020-10-27 14:07:16,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:07:16" (1/1) ... [2020-10-27 14:07:16,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:07:16" (1/1) ... [2020-10-27 14:07:16,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:07:16" (1/1) ... [2020-10-27 14:07:16,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:07:16" (1/1) ... [2020-10-27 14:07:16,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:07:16" (1/1) ... [2020-10-27 14:07:16,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:07:16,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:07:16,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:07:16,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:07:16,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:07:16" (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 14:07:16,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:07:16,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:07:16,432 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:07:16,432 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2020-10-27 14:07:16,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:07:16,433 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:07:16,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:07:16,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:07:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:07:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:07:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:07:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:07:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2020-10-27 14:07:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:07:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:07:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:07:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:07:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:07:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:07:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:07:17,072 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:07:17,073 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:07:17,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:07:17 BoogieIcfgContainer [2020-10-27 14:07:17,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:07:17,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:07:17,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:07:17,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:07:17,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:07:16" (1/3) ... [2020-10-27 14:07:17,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5998e8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:07:17, skipping insertion in model container [2020-10-27 14:07:17,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:07:16" (2/3) ... [2020-10-27 14:07:17,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5998e8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:07:17, skipping insertion in model container [2020-10-27 14:07:17,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:07:17" (3/3) ... [2020-10-27 14:07:17,089 INFO L111 eAbstractionObserver]: Analyzing ICFG xor1.i [2020-10-27 14:07:17,102 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:07:17,108 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:07:17,125 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:07:17,170 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:07:17,170 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:07:17,171 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:07:17,171 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:07:17,171 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:07:17,171 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:07:17,171 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:07:17,172 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:07:17,195 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 14:07:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:07:17,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:17,206 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:07:17,206 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:17,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:17,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1157692497, now seen corresponding path program 1 times [2020-10-27 14:07:17,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:17,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989752246] [2020-10-27 14:07:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:17,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:17,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:17,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:18,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:18,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:07:18,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:07:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-27 14:07:18,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:07:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:18,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:07:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:18,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:18,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:18,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:07:18,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:18,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:18,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:18,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:18,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:18,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:18,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:07:18,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:18,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:07:18,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:07:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:18,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:07:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:18,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:18,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:18,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:18,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:07:18,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:07:18,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:07:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:18,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:07:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:18,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:18,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:07:18,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:18,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:07:18,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:18,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:18,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:07:18,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:18,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:07:18,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989752246] [2020-10-27 14:07:18,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:07:18,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:07:18,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760980530] [2020-10-27 14:07:18,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:07:18,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:18,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:07:18,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:07:18,236 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 14:07:18,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:18,352 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 14:07:18,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:07:18,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 14:07:18,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:18,364 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:07:18,364 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:07:18,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:07:18,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:07:18,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 14:07:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 14:07:18,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 14:07:18,415 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 14:07:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:18,415 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 14:07:18,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:07:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 14:07:18,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:07:18,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:18,418 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:07:18,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:07:18,419 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:18,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:18,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1911757649, now seen corresponding path program 1 times [2020-10-27 14:07:18,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:18,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743924629] [2020-10-27 14:07:18,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:18,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:18,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:18,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:18,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:19,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:19,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:07:19,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:07:19,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1462 [2020-10-27 14:07:19,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:19,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:07:19,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:07:19,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:07:19,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:19,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:19,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:19,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:19,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:19,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:19,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:07:19,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:19,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:19,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:19,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:19,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:19,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:07:19,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:19,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:07:19,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:07:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:07:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:20,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:07:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:20,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:20,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:20,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:07:20,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:20,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:07:20,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:07:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:07:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:20,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:07:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:20,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:20,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:07:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:20,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:07:20,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:07:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:07:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:20,049 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:07:20,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743924629] [2020-10-27 14:07:20,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:07:20,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:07:20,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698063701] [2020-10-27 14:07:20,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:07:20,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:20,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:07:20,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:07:20,055 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-27 14:07:20,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:20,253 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-27 14:07:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:07:20,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 14:07:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:20,255 INFO L225 Difference]: With dead ends: 49 [2020-10-27 14:07:20,255 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 14:07:20,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:07:20,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 14:07:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-27 14:07:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:07:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 14:07:20,278 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-27 14:07:20,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:20,279 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 14:07:20,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:07:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 14:07:20,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:07:20,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:20,283 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 14:07:20,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:07:20,284 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:20,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:20,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1630607407, now seen corresponding path program 1 times [2020-10-27 14:07:20,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:20,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160440288] [2020-10-27 14:07:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:20,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:20,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:20,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:20,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:23,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:23,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:07:23,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:07:23,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3103 [2020-10-27 14:07:23,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:07:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 14:07:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:07:23,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:23,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:23,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:23,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:23,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:23,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:07:23,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:23,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:23,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:23,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:23,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:23,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:07:23,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:23,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:07:23,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:07:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:07:23,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:23,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 14:07:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:23,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:23,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:23,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:07:23,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:23,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 14:07:23,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:07:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:07:23,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:07:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:23,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:23,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:23,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:07:23,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:07:23,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:07:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:07:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 14:07:23,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160440288] [2020-10-27 14:07:23,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:23,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:07:23,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776796977] [2020-10-27 14:07:23,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:07:23,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:23,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:07:23,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:07:23,540 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-27 14:07:23,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:23,703 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-27 14:07:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:07:23,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-27 14:07:23,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:23,705 INFO L225 Difference]: With dead ends: 52 [2020-10-27 14:07:23,705 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 14:07:23,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:07:23,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 14:07:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-27 14:07:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:07:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 14:07:23,714 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 40 [2020-10-27 14:07:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:23,714 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 14:07:23,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:07:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 14:07:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 14:07:23,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:23,716 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 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 14:07:23,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:07:23,716 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:23,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:23,717 INFO L82 PathProgramCache]: Analyzing trace with hash 860862093, now seen corresponding path program 2 times [2020-10-27 14:07:23,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:23,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188969407] [2020-10-27 14:07:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:23,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:23,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:23,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:23,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:24,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:28,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:28,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:07:28,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:07:28,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:07:28,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:28,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:07:28,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 14:07:28,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:07:28,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:28,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:28,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:28,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:28,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:28,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:07:28,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:28,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:28,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:28,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:28,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:28,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:07:28,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:28,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 14:07:28,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:07:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:07:28,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:07:28,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 14:07:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:28,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:28,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:28,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:07:28,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:28,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 14:07:28,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:07:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:07:28,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:07:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:28,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:28,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:07:28,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:28,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:07:28,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:07:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:07:28,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 14:07:28,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188969407] [2020-10-27 14:07:28,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:28,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:07:28,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19202631] [2020-10-27 14:07:28,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:07:28,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:28,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:07:28,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:07:28,903 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-27 14:07:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:29,104 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-27 14:07:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:07:29,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-27 14:07:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:29,106 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:07:29,106 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 14:07:29,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:07:29,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 14:07:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-27 14:07:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:07:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 14:07:29,114 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-27 14:07:29,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:29,114 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 14:07:29,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:07:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 14:07:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 14:07:29,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:29,116 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 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 14:07:29,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:07:29,117 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:29,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:29,117 INFO L82 PathProgramCache]: Analyzing trace with hash -791718293, now seen corresponding path program 3 times [2020-10-27 14:07:29,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:29,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533118514] [2020-10-27 14:07:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:29,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:29,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:29,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:29,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:29,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:34,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:34,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:07:34,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:07:34,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:07:34,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:34,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:07:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:07:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:07:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:34,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:34,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:34,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:34,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:34,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:34,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:07:34,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:34,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:34,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:34,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:07:34,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:34,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 14:07:34,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:07:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:07:34,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:07:34,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 14:07:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:34,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:34,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:34,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:34,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:07:34,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:34,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 14:07:34,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:34,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:07:34,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:34,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:07:34,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:34,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:07:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:34,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:34,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:07:34,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:34,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:07:34,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:07:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:34,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:07:34,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:07:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 14:07:34,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533118514] [2020-10-27 14:07:34,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:34,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:07:34,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229176554] [2020-10-27 14:07:34,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:07:34,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:34,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:07:34,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:07:34,323 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-27 14:07:34,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:34,569 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-27 14:07:34,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:07:34,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-27 14:07:34,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:34,572 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:07:34,572 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:07:34,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:07:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:07:34,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-27 14:07:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 14:07:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-27 14:07:34,585 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-27 14:07:34,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:34,586 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-27 14:07:34,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:07:34,586 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-27 14:07:34,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 14:07:34,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:34,589 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 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 14:07:34,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:07:34,589 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:34,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:34,590 INFO L82 PathProgramCache]: Analyzing trace with hash 717772745, now seen corresponding path program 4 times [2020-10-27 14:07:34,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:34,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105632383] [2020-10-27 14:07:34,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:34,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:34,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:35,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:39,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:39,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:07:39,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:07:39,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:07:39,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:07:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 14:07:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:07:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:39,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:39,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:39,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:39,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:39,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:39,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:07:39,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:39,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:39,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:39,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:39,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:39,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:39,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:39,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:39,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:07:39,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 14:07:39,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:07:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:07:39,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:39,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:07:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:39,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:39,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:39,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:39,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:07:39,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:39,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 14:07:39,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:07:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:07:39,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:39,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:07:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:39,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:39,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:07:39,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:39,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:07:39,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:07:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:07:39,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 14:07:39,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105632383] [2020-10-27 14:07:39,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:39,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:07:39,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935945034] [2020-10-27 14:07:39,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:07:39,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:39,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:07:39,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:07:39,840 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-27 14:07:40,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:40,135 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-27 14:07:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:07:40,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-27 14:07:40,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:40,137 INFO L225 Difference]: With dead ends: 64 [2020-10-27 14:07:40,137 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:07:40,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:07:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:07:40,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-27 14:07:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 14:07:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-27 14:07:40,151 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-27 14:07:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:40,152 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-27 14:07:40,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:07:40,152 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-27 14:07:40,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:07:40,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:40,156 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 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 14:07:40,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:07:40,156 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:40,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:40,157 INFO L82 PathProgramCache]: Analyzing trace with hash 820714151, now seen corresponding path program 5 times [2020-10-27 14:07:40,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:40,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571433972] [2020-10-27 14:07:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:40,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:40,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:40,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:40,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:41,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:45,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:45,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 14:07:45,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:07:45,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:07:45,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:07:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 14:07:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:07:45,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:45,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:45,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:45,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:45,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:45,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:07:45,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:45,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:45,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:45,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:45,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:45,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:07:45,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:45,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 14:07:45,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:07:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:07:45,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:45,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 14:07:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:45,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:45,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:45,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:45,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:07:45,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 14:07:45,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:07:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:07:45,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:45,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:07:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:45,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:45,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:45,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:07:45,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 14:07:45,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:07:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:07:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 14:07:45,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571433972] [2020-10-27 14:07:45,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:45,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:07:45,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669476248] [2020-10-27 14:07:45,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:07:45,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:45,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:07:45,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:07:45,461 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-27 14:07:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:45,817 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-27 14:07:45,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:07:45,818 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-27 14:07:45,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:45,819 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:07:45,819 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:07:45,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:07:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:07:45,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-27 14:07:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:07:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-27 14:07:45,831 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-27 14:07:45,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:45,833 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-27 14:07:45,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:07:45,833 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-27 14:07:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 14:07:45,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:45,838 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 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 14:07:45,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:07:45,838 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:45,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:45,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1199570693, now seen corresponding path program 6 times [2020-10-27 14:07:45,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:45,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68507173] [2020-10-27 14:07:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:45,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:45,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:47,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:50,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:50,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:07:50,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:07:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:07:50,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:07:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 14:07:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:07:50,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:50,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:50,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:50,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:50,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:07:50,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:50,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:50,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:50,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:50,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:07:50,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:50,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 14:07:50,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:07:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:07:50,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:51,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:07:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:51,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:51,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:51,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:51,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:07:51,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:51,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 14:07:51,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:07:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:07:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:51,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:07:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:51,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:51,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:51,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:07:51,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:51,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 14:07:51,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:07:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:07:51,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 14:07:51,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68507173] [2020-10-27 14:07:51,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:51,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:07:51,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34282252] [2020-10-27 14:07:51,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:07:51,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:51,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:07:51,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:07:51,254 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-27 14:07:51,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:51,592 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-27 14:07:51,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:07:51,593 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-27 14:07:51,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:51,594 INFO L225 Difference]: With dead ends: 72 [2020-10-27 14:07:51,594 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:07:51,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:07:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:07:51,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-27 14:07:51,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 14:07:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-27 14:07:51,604 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-27 14:07:51,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:51,605 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-27 14:07:51,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:07:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-27 14:07:51,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:07:51,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:51,612 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 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 14:07:51,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:07:51,612 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:51,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1030186211, now seen corresponding path program 7 times [2020-10-27 14:07:51,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:51,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878504054] [2020-10-27 14:07:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:51,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:51,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:51,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:51,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:53,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:56,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:56,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 14:07:56,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:07:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:07:56,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:07:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 14:07:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:07:56,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:56,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:56,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:56,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:56,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:56,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:07:56,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:56,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:56,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:56,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:56,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:56,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:07:56,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:56,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 14:07:56,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:07:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:07:56,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:56,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:07:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:56,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:56,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:07:56,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:56,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 14:07:56,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:07:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:07:56,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:56,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:07:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:56,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:56,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:56,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:07:56,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 14:07:56,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:07:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:07:56,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 14:07:56,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878504054] [2020-10-27 14:07:56,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:56,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:07:56,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980304188] [2020-10-27 14:07:56,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:07:56,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:56,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:07:56,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:07:56,911 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-27 14:07:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:57,355 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-27 14:07:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:07:57,356 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-27 14:07:57,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:57,357 INFO L225 Difference]: With dead ends: 76 [2020-10-27 14:07:57,357 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 14:07:57,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:07:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 14:07:57,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-27 14:07:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 14:07:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-27 14:07:57,369 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-27 14:07:57,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:57,369 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-27 14:07:57,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:07:57,369 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-27 14:07:57,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:07:57,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:57,370 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 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 14:07:57,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:07:57,371 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:57,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:57,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1038504895, now seen corresponding path program 8 times [2020-10-27 14:07:57,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:57,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748831346] [2020-10-27 14:07:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:57,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:57,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:57,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:58,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:02,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:02,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 14:08:02,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:08:02,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:08:02,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:02,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:08:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 14:08:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:08:02,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:02,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:08:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:02,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:02,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:02,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:08:02,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:02,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:08:02,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:08:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:02,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:02,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:08:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:02,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:02,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:02,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:08:02,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:02,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 14:08:02,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:08:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:02,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:08:02,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:02,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:08:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:02,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:02,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:02,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:02,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:08:02,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 14:08:02,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:08:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:02,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:08:02,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:02,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:08:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:02,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:02,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:02,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:08:02,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 14:08:02,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:08:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:08:02,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 14:08:02,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748831346] [2020-10-27 14:08:02,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:08:02,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:08:02,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594865346] [2020-10-27 14:08:02,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:08:02,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:08:02,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:08:02,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:08:02,687 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-27 14:08:03,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:08:03,199 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-27 14:08:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:08:03,200 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-27 14:08:03,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:08:03,201 INFO L225 Difference]: With dead ends: 80 [2020-10-27 14:08:03,202 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 14:08:03,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:08:03,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 14:08:03,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-27 14:08:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 14:08:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-27 14:08:03,213 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-27 14:08:03,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:08:03,214 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-27 14:08:03,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:08:03,214 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-27 14:08:03,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 14:08:03,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:08:03,215 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 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 14:08:03,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:08:03,216 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:08:03,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:08:03,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1537684767, now seen corresponding path program 9 times [2020-10-27 14:08:03,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:08:03,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906397162] [2020-10-27 14:08:03,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:08:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:03,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:03,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:03,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:08,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:08,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 14:08:08,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:08:08,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:08:08,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:08,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:08:08,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 14:08:08,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:08:08,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:08,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:08:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:08,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:08,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:08,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:08:08,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:08,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:08:08,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:08:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:08,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:08,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:08:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:08,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:08,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:08,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:08:08,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:08,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 14:08:08,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:08:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:08:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:08,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:08:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:08,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:08,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:08,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:08:08,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:08,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 14:08:08,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:08,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:08:08,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:08,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:08:08,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:08,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:08:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:08,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:08,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:08,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:08:08,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 14:08:08,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:08:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:08:08,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 14:08:08,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906397162] [2020-10-27 14:08:08,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:08:08,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:08:08,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934263804] [2020-10-27 14:08:08,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:08:08,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:08:08,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:08:08,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:08:08,554 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-27 14:08:09,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:08:09,033 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-27 14:08:09,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:08:09,034 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-27 14:08:09,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:08:09,036 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:08:09,036 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 14:08:09,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:08:09,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 14:08:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-27 14:08:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 14:08:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-27 14:08:09,044 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-27 14:08:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:08:09,044 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-27 14:08:09,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:08:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-27 14:08:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:08:09,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:08:09,046 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 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 14:08:09,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:08:09,046 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:08:09,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:08:09,046 INFO L82 PathProgramCache]: Analyzing trace with hash -591896707, now seen corresponding path program 10 times [2020-10-27 14:08:09,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:08:09,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645773892] [2020-10-27 14:08:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:08:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:09,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:09,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:14,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:14,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 14:08:14,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:08:14,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:08:14,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:08:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 14:08:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:08:14,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:14,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:08:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:14,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:14,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:14,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:08:14,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:14,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:08:14,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:08:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:14,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:08:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:14,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:14,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:14,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:08:14,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:14,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 14:08:14,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:14,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:08:14,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:14,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:08:14,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:14,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:08:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:14,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:14,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:14,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:14,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:08:14,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:14,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 14:08:14,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:08:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:08:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:14,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:08:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:14,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:14,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:14,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:08:14,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:14,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 14:08:14,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:14,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:08:14,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:14,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:08:14,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 14:08:14,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645773892] [2020-10-27 14:08:14,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:08:14,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:08:14,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360238868] [2020-10-27 14:08:14,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:08:14,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:08:14,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:08:14,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:08:14,410 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-10-27 14:08:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:08:15,019 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-27 14:08:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:08:15,020 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-27 14:08:15,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:08:15,021 INFO L225 Difference]: With dead ends: 88 [2020-10-27 14:08:15,021 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 14:08:15,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:08:15,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 14:08:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-27 14:08:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 14:08:15,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-27 14:08:15,031 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 94 [2020-10-27 14:08:15,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:08:15,031 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-27 14:08:15,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:08:15,032 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-27 14:08:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:08:15,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:08:15,033 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 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 14:08:15,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:08:15,033 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:08:15,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:08:15,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1519225691, now seen corresponding path program 11 times [2020-10-27 14:08:15,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:08:15,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099653846] [2020-10-27 14:08:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:08:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:15,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:15,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:15,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:20,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:20,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:08:20,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:08:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:08:20,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:08:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 14:08:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:08:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:20,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:08:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:20,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:20,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:08:20,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:08:20,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:08:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:20,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:08:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:20,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:20,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:20,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:20,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:08:20,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 14:08:20,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:08:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:08:20,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:08:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:20,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:20,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:20,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:08:20,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 14:08:20,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:08:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:08:20,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:20,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:08:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:20,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:20,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:20,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:20,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:08:20,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:20,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 14:08:20,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 14:08:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:20,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 121 proven. 899 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-27 14:08:20,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099653846] [2020-10-27 14:08:20,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:08:20,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:08:20,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928404400] [2020-10-27 14:08:20,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:08:20,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:08:20,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:08:20,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:08:20,467 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-27 14:08:21,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:08:21,311 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2020-10-27 14:08:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:08:21,312 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2020-10-27 14:08:21,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:08:21,313 INFO L225 Difference]: With dead ends: 94 [2020-10-27 14:08:21,313 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 14:08:21,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:08:21,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 14:08:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-27 14:08:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:08:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-27 14:08:21,329 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 100 [2020-10-27 14:08:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:08:21,330 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-27 14:08:21,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:08:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-27 14:08:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 14:08:21,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:08:21,335 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 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 14:08:21,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:08:21,336 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:08:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:08:21,337 INFO L82 PathProgramCache]: Analyzing trace with hash -487300041, now seen corresponding path program 1 times [2020-10-27 14:08:21,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:08:21,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907685887] [2020-10-27 14:08:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:08:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:21,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:21,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:21,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:21,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:26,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:26,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 14:08:26,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:08:26,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:08:26,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:26,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:08:26,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 14:08:26,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:08:26,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:26,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:08:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:26,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:26,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:26,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:08:26,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:26,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:08:26,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:26,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:08:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:26,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:08:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:26,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:26,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:26,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:26,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:08:26,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:26,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 14:08:26,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:08:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:08:26,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:26,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:08:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:26,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:26,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:26,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:08:26,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 14:08:26,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:08:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:08:26,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:26,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:08:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:26,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:26,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:08:26,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:26,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 14:08:26,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 14:08:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 144 proven. 1065 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-27 14:08:26,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907685887] [2020-10-27 14:08:26,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:08:26,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:08:26,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164473953] [2020-10-27 14:08:26,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:08:26,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:08:26,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:08:26,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:08:26,871 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 18 states. [2020-10-27 14:08:27,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:08:27,561 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-10-27 14:08:27,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:08:27,562 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-10-27 14:08:27,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:08:27,563 INFO L225 Difference]: With dead ends: 101 [2020-10-27 14:08:27,563 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 14:08:27,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=610, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:08:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 14:08:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-27 14:08:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 14:08:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-27 14:08:27,572 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 108 [2020-10-27 14:08:27,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:08:27,572 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-27 14:08:27,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:08:27,572 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-27 14:08:27,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 14:08:27,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:08:27,574 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:08:27,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:08:27,574 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:08:27,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:08:27,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1850705939, now seen corresponding path program 2 times [2020-10-27 14:08:27,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:08:27,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867624631] [2020-10-27 14:08:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:08:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:27,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:27,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:27,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:32,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:32,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 14:08:32,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:08:32,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:08:32,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:08:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 14:08:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:08:32,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:32,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:08:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:32,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:32,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:32,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:08:32,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:32,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:08:32,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:08:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:32,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:32,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:08:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:32,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:32,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:32,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:08:32,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:32,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 14:08:32,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:32,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:08:32,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:32,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:08:32,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:32,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:08:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:32,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:32,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:33,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:33,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:08:33,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 14:08:33,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:08:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:08:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:33,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:08:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:33,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:33,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:33,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:33,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:08:33,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:33,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 14:08:33,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:08:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 169 proven. 1247 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-27 14:08:33,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867624631] [2020-10-27 14:08:33,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:08:33,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:08:33,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438605464] [2020-10-27 14:08:33,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:08:33,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:08:33,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:08:33,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:08:33,173 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 20 states. [2020-10-27 14:08:33,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:08:33,915 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-10-27 14:08:33,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:08:33,916 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 116 [2020-10-27 14:08:33,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:08:33,917 INFO L225 Difference]: With dead ends: 109 [2020-10-27 14:08:33,917 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 14:08:33,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=369, Invalid=753, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:08:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 14:08:33,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-27 14:08:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 14:08:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-27 14:08:33,927 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 116 [2020-10-27 14:08:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:08:33,927 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-27 14:08:33,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:08:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-27 14:08:33,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:08:33,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:08:33,929 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 3, 3, 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 14:08:33,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:08:33,929 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:08:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:08:33,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1963084049, now seen corresponding path program 3 times [2020-10-27 14:08:33,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:08:33,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148267171] [2020-10-27 14:08:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:08:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:33,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:33,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:33,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:33,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:38,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:38,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 14:08:38,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:08:38,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:08:38,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:08:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 14:08:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:08:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:39,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:08:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:39,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:39,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:08:39,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:39,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:08:39,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:08:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:39,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:08:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:39,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:39,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:39,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:39,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:08:39,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:39,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 14:08:39,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:08:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:08:39,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:39,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:08:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:39,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:39,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:39,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:39,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:08:39,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:39,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 14:08:39,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:08:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:08:39,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:39,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:08:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:39,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:39,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:39,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:08:39,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 14:08:39,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:08:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 196 proven. 1445 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 14:08:39,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148267171] [2020-10-27 14:08:39,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:08:39,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:08:39,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324817115] [2020-10-27 14:08:39,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:08:39,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:08:39,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:08:39,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:08:39,557 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 22 states. [2020-10-27 14:08:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:08:40,467 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2020-10-27 14:08:40,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:08:40,469 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 124 [2020-10-27 14:08:40,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:08:40,470 INFO L225 Difference]: With dead ends: 117 [2020-10-27 14:08:40,470 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:08:40,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=422, Invalid=910, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:08:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:08:40,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-27 14:08:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:08:40,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-27 14:08:40,485 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 124 [2020-10-27 14:08:40,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:08:40,485 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-27 14:08:40,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:08:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-27 14:08:40,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 14:08:40,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:08:40,487 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 4, 4, 3, 3, 3, 3, 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 14:08:40,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:08:40,487 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:08:40,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:08:40,488 INFO L82 PathProgramCache]: Analyzing trace with hash 198029515, now seen corresponding path program 4 times [2020-10-27 14:08:40,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:08:40,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421533260] [2020-10-27 14:08:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:08:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:40,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:40,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:40,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:45,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:45,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 14:08:45,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:08:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:08:45,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:08:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 14:08:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:08:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:45,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:08:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:45,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:45,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:08:45,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:45,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:08:45,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:08:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:45,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:45,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:08:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:45,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:45,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:45,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:08:45,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:45,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 14:08:45,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:08:45,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:45,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:08:45,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:08:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:45,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:46,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:46,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:08:46,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:46,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 14:08:46,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:08:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:08:46,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:46,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:08:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:46,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:46,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:46,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:08:46,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 14:08:46,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:08:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:46,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 225 proven. 1659 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-27 14:08:46,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421533260] [2020-10-27 14:08:46,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:08:46,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:08:46,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677332862] [2020-10-27 14:08:46,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:08:46,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:08:46,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:08:46,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:08:46,125 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 24 states. [2020-10-27 14:08:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:08:47,036 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2020-10-27 14:08:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:08:47,037 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2020-10-27 14:08:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:08:47,038 INFO L225 Difference]: With dead ends: 125 [2020-10-27 14:08:47,038 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 14:08:47,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=479, Invalid=1081, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:08:47,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 14:08:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-27 14:08:47,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:08:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-27 14:08:47,056 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 132 [2020-10-27 14:08:47,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:08:47,057 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-27 14:08:47,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:08:47,057 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-27 14:08:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 14:08:47,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:08:47,059 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 5, 5, 3, 3, 3, 3, 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 14:08:47,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:08:47,059 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:08:47,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:08:47,060 INFO L82 PathProgramCache]: Analyzing trace with hash -201443929, now seen corresponding path program 5 times [2020-10-27 14:08:47,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:08:47,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32863114] [2020-10-27 14:08:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:08:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:47,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:47,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:47,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:47,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:52,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:52,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:08:52,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:08:52,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:08:52,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:08:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 14:08:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:08:52,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:52,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:08:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:52,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:52,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:52,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:08:52,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:52,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:08:52,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:08:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:52,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:52,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:08:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:52,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:52,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:08:52,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 14:08:52,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:08:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:08:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:52,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:08:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:52,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:52,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:52,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:08:52,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 14:08:52,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:08:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:08:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:52,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:08:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:52,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:52,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:52,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:52,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:08:52,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:52,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 14:08:52,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:52,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:08:52,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:52,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2440 backedges. 256 proven. 1889 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-27 14:08:52,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32863114] [2020-10-27 14:08:52,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:08:52,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:08:52,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592009282] [2020-10-27 14:08:52,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:08:52,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:08:52,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:08:52,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:08:52,751 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 26 states. [2020-10-27 14:08:53,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:08:53,810 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2020-10-27 14:08:53,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:08:53,810 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 140 [2020-10-27 14:08:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:08:53,811 INFO L225 Difference]: With dead ends: 133 [2020-10-27 14:08:53,811 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 14:08:53,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=540, Invalid=1266, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:08:53,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 14:08:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-27 14:08:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 14:08:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-27 14:08:53,827 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 140 [2020-10-27 14:08:53,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:08:53,827 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-27 14:08:53,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:08:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-27 14:08:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 14:08:53,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:08:53,829 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 6, 6, 3, 3, 3, 3, 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 14:08:53,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:08:53,830 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:08:53,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:08:53,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1665009027, now seen corresponding path program 6 times [2020-10-27 14:08:53,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:08:53,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074153827] [2020-10-27 14:08:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:08:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:53,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:53,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:58,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:58,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 14:08:58,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:08:58,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:08:58,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:08:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 14:08:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:08:58,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:58,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:08:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:58,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:58,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:58,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:08:58,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:08:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:08:58,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:08:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:58,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:08:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:58,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:58,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:59,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:59,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:08:59,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:59,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 14:08:59,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:08:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:08:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:59,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:08:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:59,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:59,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:59,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:08:59,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:59,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 14:08:59,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:08:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:08:59,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:08:59,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:59,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:08:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:08:59,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:59,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:08:59,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:08:59,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:08:59,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:08:59,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 14:08:59,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:08:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:08:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:08:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:08:59,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:08:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2754 backedges. 289 proven. 2135 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-27 14:08:59,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074153827] [2020-10-27 14:08:59,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:08:59,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:08:59,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16913238] [2020-10-27 14:08:59,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:08:59,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:08:59,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:08:59,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:08:59,786 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 28 states. [2020-10-27 14:09:00,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:09:00,972 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2020-10-27 14:09:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:09:00,973 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 148 [2020-10-27 14:09:00,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:09:00,974 INFO L225 Difference]: With dead ends: 141 [2020-10-27 14:09:00,974 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:09:00,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=605, Invalid=1465, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:09:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:09:00,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-27 14:09:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 14:09:00,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-27 14:09:00,985 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 148 [2020-10-27 14:09:00,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:09:00,985 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-27 14:09:00,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:09:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-27 14:09:00,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 14:09:00,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:09:00,987 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 7, 7, 3, 3, 3, 3, 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 14:09:00,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:09:00,987 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:09:00,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:09:00,988 INFO L82 PathProgramCache]: Analyzing trace with hash -2119442337, now seen corresponding path program 7 times [2020-10-27 14:09:00,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:09:00,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618797025] [2020-10-27 14:09:00,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:09:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:01,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:01,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:01,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:01,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:06,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:06,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 14:09:06,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:09:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:09:06,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:09:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 14:09:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:09:06,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:06,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:09:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:06,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:06,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:09:06,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:09:06,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:09:06,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:09:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:06,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:06,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:09:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:06,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:06,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:06,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:09:06,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:06,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 14:09:06,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:09:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:09:06,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:06,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:09:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:06,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:06,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:06,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:09:06,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:06,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-27 14:09:06,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:09:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:09:06,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:06,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:09:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:06,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:06,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:07,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:07,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:09:07,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:07,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 14:09:07,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:07,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:09:07,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:07,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:09:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3088 backedges. 324 proven. 2397 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2020-10-27 14:09:07,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618797025] [2020-10-27 14:09:07,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:09:07,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:09:07,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283823182] [2020-10-27 14:09:07,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:09:07,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:09:07,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:09:07,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=614, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:09:07,058 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 30 states. [2020-10-27 14:09:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:09:08,294 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2020-10-27 14:09:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:09:08,295 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 156 [2020-10-27 14:09:08,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:09:08,296 INFO L225 Difference]: With dead ends: 149 [2020-10-27 14:09:08,296 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 14:09:08,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=674, Invalid=1678, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:09:08,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 14:09:08,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-27 14:09:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 14:09:08,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-27 14:09:08,305 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 156 [2020-10-27 14:09:08,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:09:08,305 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-27 14:09:08,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:09:08,305 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-27 14:09:08,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 14:09:08,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:09:08,307 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 8, 8, 3, 3, 3, 3, 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 14:09:08,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:09:08,308 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:09:08,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:09:08,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1809221179, now seen corresponding path program 8 times [2020-10-27 14:09:08,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:09:08,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912274658] [2020-10-27 14:09:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:09:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:08,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:08,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:13,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:13,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 14:09:13,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:09:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:09:13,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:09:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-27 14:09:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:09:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:13,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:09:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:13,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:13,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:13,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:09:13,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:09:13,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:09:13,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:09:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:13,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:13,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:09:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:13,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:13,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:13,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:13,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:09:13,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 14:09:13,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:09:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:09:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:14,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:09:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:14,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:14,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:14,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:14,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:09:14,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:14,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 14:09:14,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:09:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:09:14,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:14,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:09:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:14,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:14,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:14,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:14,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:09:14,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:14,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 14:09:14,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:14,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:14,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:09:14,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:14,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3442 backedges. 361 proven. 2675 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-27 14:09:14,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912274658] [2020-10-27 14:09:14,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:09:14,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:09:14,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393652692] [2020-10-27 14:09:14,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:09:14,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:09:14,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:09:14,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:09:14,350 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 32 states. [2020-10-27 14:09:15,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:09:15,723 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-10-27 14:09:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:09:15,723 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 164 [2020-10-27 14:09:15,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:09:15,725 INFO L225 Difference]: With dead ends: 157 [2020-10-27 14:09:15,725 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 14:09:15,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=747, Invalid=1905, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:09:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 14:09:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-27 14:09:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:09:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-27 14:09:15,734 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 164 [2020-10-27 14:09:15,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:09:15,734 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-27 14:09:15,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:09:15,734 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-27 14:09:15,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 14:09:15,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:09:15,736 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 9, 9, 3, 3, 3, 3, 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 14:09:15,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:09:15,736 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:09:15,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:09:15,736 INFO L82 PathProgramCache]: Analyzing trace with hash 515684119, now seen corresponding path program 9 times [2020-10-27 14:09:15,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:09:15,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719545722] [2020-10-27 14:09:15,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:09:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:15,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:15,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:15,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:15,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:20,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:20,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 14:09:20,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:09:20,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:09:20,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:09:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 14:09:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:09:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:20,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:09:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:20,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:20,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:20,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:09:20,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:09:20,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:09:20,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:09:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:20,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:20,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:09:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:20,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:21,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:21,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:09:21,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 14:09:21,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:09:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:09:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:21,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:09:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:21,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:21,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:21,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:09:21,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:21,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 14:09:21,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:09:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:09:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:21,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:09:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:21,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:21,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:21,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:09:21,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 14:09:21,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:09:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:21,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 400 proven. 2969 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2020-10-27 14:09:21,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719545722] [2020-10-27 14:09:21,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:09:21,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:09:21,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32990119] [2020-10-27 14:09:21,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:09:21,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:09:21,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:09:21,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:09:21,826 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 34 states. [2020-10-27 14:09:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:09:23,338 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-27 14:09:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:09:23,341 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 172 [2020-10-27 14:09:23,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:09:23,342 INFO L225 Difference]: With dead ends: 165 [2020-10-27 14:09:23,342 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 14:09:23,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=824, Invalid=2146, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 14:09:23,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 14:09:23,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-27 14:09:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:09:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-27 14:09:23,353 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 172 [2020-10-27 14:09:23,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:09:23,354 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-27 14:09:23,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:09:23,354 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-27 14:09:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-27 14:09:23,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:09:23,356 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 10, 10, 3, 3, 3, 3, 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 14:09:23,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:09:23,356 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:09:23,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:09:23,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1674392307, now seen corresponding path program 10 times [2020-10-27 14:09:23,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:09:23,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869397719] [2020-10-27 14:09:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:09:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:23,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:23,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:28,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:28,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 14:09:28,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:09:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:09:28,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:09:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 14:09:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:09:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:28,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:09:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:28,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:28,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:28,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:09:28,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:09:28,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:09:28,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:28,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:28,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:09:28,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:28,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:28,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:09:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:28,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:28,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:28,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:28,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:09:28,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 14:09:28,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:09:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:09:28,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:29,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:09:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:29,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:29,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:29,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:09:29,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:29,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 14:09:29,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:09:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:09:29,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:29,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:09:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:29,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:29,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:29,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:29,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:09:29,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 14:09:29,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:09:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4210 backedges. 441 proven. 3279 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2020-10-27 14:09:29,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869397719] [2020-10-27 14:09:29,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:09:29,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:09:29,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738077899] [2020-10-27 14:09:29,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:09:29,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:09:29,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:09:29,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=905, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:09:29,526 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 36 states. [2020-10-27 14:09:31,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:09:31,068 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2020-10-27 14:09:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:09:31,069 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 180 [2020-10-27 14:09:31,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:09:31,070 INFO L225 Difference]: With dead ends: 173 [2020-10-27 14:09:31,070 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 14:09:31,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=905, Invalid=2401, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:09:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 14:09:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-10-27 14:09:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 14:09:31,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-27 14:09:31,088 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 180 [2020-10-27 14:09:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:09:31,089 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-27 14:09:31,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:09:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-27 14:09:31,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 14:09:31,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:09:31,092 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 11, 11, 3, 3, 3, 3, 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 14:09:31,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:09:31,092 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:09:31,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:09:31,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1125729841, now seen corresponding path program 11 times [2020-10-27 14:09:31,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:09:31,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090780371] [2020-10-27 14:09:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:09:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:31,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:31,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:31,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:31,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:36,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:36,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 14:09:36,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:09:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:09:36,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:09:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-27 14:09:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:09:36,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:36,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:09:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:36,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:36,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:36,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:09:36,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:09:36,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:09:36,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:36,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:36,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:09:36,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:36,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:36,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:09:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:36,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:36,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:36,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:36,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:09:36,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:36,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 14:09:36,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:09:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:09:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:37,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:09:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:37,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:37,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:37,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:37,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:09:37,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:37,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 14:09:37,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:09:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:09:37,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 14:09:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:37,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:37,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:37,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:37,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:09:37,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:37,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 14:09:37,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:37,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:37,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:09:37,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:37,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 484 proven. 3605 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-27 14:09:37,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090780371] [2020-10-27 14:09:37,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:09:37,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:09:37,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336103684] [2020-10-27 14:09:37,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:09:37,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:09:37,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:09:37,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1014, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:09:37,383 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 38 states. [2020-10-27 14:09:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:09:39,148 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2020-10-27 14:09:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:09:39,148 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 188 [2020-10-27 14:09:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:09:39,150 INFO L225 Difference]: With dead ends: 181 [2020-10-27 14:09:39,150 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 14:09:39,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=990, Invalid=2670, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 14:09:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 14:09:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-27 14:09:39,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:09:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-27 14:09:39,159 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 188 [2020-10-27 14:09:39,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:09:39,160 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-27 14:09:39,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:09:39,160 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-27 14:09:39,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 14:09:39,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:09:39,161 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 12, 12, 3, 3, 3, 3, 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 14:09:39,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:09:39,162 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:09:39,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:09:39,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1347947435, now seen corresponding path program 12 times [2020-10-27 14:09:39,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:09:39,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867765324] [2020-10-27 14:09:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:09:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:39,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:39,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:39,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:44,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:44,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 14:09:44,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:09:44,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:09:44,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:09:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-27 14:09:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:09:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:44,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:09:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:44,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:44,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:44,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:09:44,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:09:44,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:09:44,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:09:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:44,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:44,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:09:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:44,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:44,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:44,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:44,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:09:44,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:44,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 14:09:44,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:44,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:09:44,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:44,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:09:44,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:45,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:09:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:45,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:45,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:45,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:45,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:09:45,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:45,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 14:09:45,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:09:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:09:45,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:45,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:09:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:45,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:45,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:45,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:09:45,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:45,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-27 14:09:45,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:45,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 14:09:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:45,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5058 backedges. 529 proven. 3947 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2020-10-27 14:09:45,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867765324] [2020-10-27 14:09:45,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:09:45,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:09:45,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166224564] [2020-10-27 14:09:45,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:09:45,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:09:45,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:09:45,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=1129, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:09:45,634 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 40 states. [2020-10-27 14:09:47,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:09:47,304 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2020-10-27 14:09:47,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:09:47,305 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 196 [2020-10-27 14:09:47,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:09:47,307 INFO L225 Difference]: With dead ends: 189 [2020-10-27 14:09:47,307 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 14:09:47,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1079, Invalid=2953, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 14:09:47,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 14:09:47,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-27 14:09:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:09:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-27 14:09:47,316 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 196 [2020-10-27 14:09:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:09:47,317 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-27 14:09:47,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:09:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-27 14:09:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 14:09:47,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:09:47,318 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 13, 13, 3, 3, 3, 3, 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 14:09:47,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:09:47,319 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:09:47,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:09:47,319 INFO L82 PathProgramCache]: Analyzing trace with hash -723523449, now seen corresponding path program 13 times [2020-10-27 14:09:47,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:09:47,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131859948] [2020-10-27 14:09:47,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:09:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:47,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:47,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:47,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:47,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:52,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:52,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 14:09:52,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:09:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:09:52,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:09:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 14:09:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:09:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:52,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:09:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:52,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:52,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:09:52,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:09:52,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:09:52,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:09:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:52,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:52,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:09:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:52,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:52,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:09:52,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:52,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 14:09:52,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:09:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:09:52,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:53,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:09:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:53,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:53,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:53,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:53,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:09:53,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 14:09:53,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:09:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:09:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:09:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:53,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 14:09:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:53,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:53,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:09:53,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:09:53,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:09:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 14:09:53,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:09:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:09:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 14:09:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:09:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:09:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 576 proven. 4305 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2020-10-27 14:09:53,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131859948] [2020-10-27 14:09:53,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:09:53,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 14:09:53,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605627870] [2020-10-27 14:09:53,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 14:09:53,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:09:53,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 14:09:53,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1250, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:09:53,931 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 42 states. [2020-10-27 14:09:55,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:09:55,956 INFO L93 Difference]: Finished difference Result 197 states and 208 transitions. [2020-10-27 14:09:55,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:09:55,957 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 204 [2020-10-27 14:09:55,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:09:55,958 INFO L225 Difference]: With dead ends: 197 [2020-10-27 14:09:55,959 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:09:55,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1172, Invalid=3250, Unknown=0, NotChecked=0, Total=4422 [2020-10-27 14:09:55,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:09:55,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-27 14:09:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:09:55,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-10-27 14:09:55,969 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 204 [2020-10-27 14:09:55,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:09:55,969 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-10-27 14:09:55,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 14:09:55,969 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-10-27 14:09:55,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 14:09:55,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:09:55,971 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 14, 14, 3, 3, 3, 3, 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 14:09:55,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:09:55,971 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:09:55,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:09:55,972 INFO L82 PathProgramCache]: Analyzing trace with hash 2108493923, now seen corresponding path program 14 times [2020-10-27 14:09:55,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:09:55,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485765373] [2020-10-27 14:09:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:09:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:09:55,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:56,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:09:56,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:00,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:00,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 14:10:00,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:10:00,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:10:00,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:00,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:10:00,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 14:10:00,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:10:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:01,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:10:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:01,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:01,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:01,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:10:01,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:10:01,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:10:01,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:10:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:10:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:10:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:01,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:10:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:01,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:01,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:01,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:01,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:10:01,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:01,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 14:10:01,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:10:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:10:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:10:01,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:02,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:10:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:02,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:02,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:02,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:10:02,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:02,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-27 14:10:02,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:10:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:10:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:10:02,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 14:10:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:02,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:02,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:02,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:02,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:10:02,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 14:10:02,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:10:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:10:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:10:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5986 backedges. 625 proven. 4679 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2020-10-27 14:10:02,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485765373] [2020-10-27 14:10:02,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:10:02,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 14:10:02,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658545302] [2020-10-27 14:10:02,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 14:10:02,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:10:02,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 14:10:02,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1377, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:10:02,652 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 44 states. [2020-10-27 14:10:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:10:04,855 INFO L93 Difference]: Finished difference Result 205 states and 216 transitions. [2020-10-27 14:10:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 14:10:04,856 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 212 [2020-10-27 14:10:04,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:10:04,857 INFO L225 Difference]: With dead ends: 205 [2020-10-27 14:10:04,857 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 14:10:04,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1269, Invalid=3561, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 14:10:04,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 14:10:04,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-27 14:10:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:10:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2020-10-27 14:10:04,876 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 212 [2020-10-27 14:10:04,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:10:04,877 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2020-10-27 14:10:04,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 14:10:04,877 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2020-10-27 14:10:04,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-27 14:10:04,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:10:04,880 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 15, 15, 3, 3, 3, 3, 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 14:10:04,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:10:04,880 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:10:04,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:10:04,881 INFO L82 PathProgramCache]: Analyzing trace with hash -430030017, now seen corresponding path program 15 times [2020-10-27 14:10:04,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:10:04,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91170673] [2020-10-27 14:10:04,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:10:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:04,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:04,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:05,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:05,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:09,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:09,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 14:10:09,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:10:09,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:10:09,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:09,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:10:09,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-27 14:10:09,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:10:09,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:10,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:10:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:10,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:10,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:10:10,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:10:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:10:10,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:10:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:10:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:10:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:10,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:10:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:10,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:10,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:10,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:10:10,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:10,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 14:10:10,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:10:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:10:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:10:10,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:10:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:11,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:11,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:11,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:10:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-27 14:10:11,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:10:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:10:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:10:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:11,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 14:10:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:11,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:11,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:11,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:11,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:10:11,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-27 14:10:11,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:10:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 14:10:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:10:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 676 proven. 5069 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2020-10-27 14:10:12,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91170673] [2020-10-27 14:10:12,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:10:12,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 14:10:12,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289310392] [2020-10-27 14:10:12,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 14:10:12,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:10:12,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 14:10:12,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=1510, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:10:12,051 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand 46 states. [2020-10-27 14:10:14,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:10:14,406 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2020-10-27 14:10:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 14:10:14,407 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 220 [2020-10-27 14:10:14,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:10:14,409 INFO L225 Difference]: With dead ends: 213 [2020-10-27 14:10:14,409 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:10:14,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1370, Invalid=3886, Unknown=0, NotChecked=0, Total=5256 [2020-10-27 14:10:14,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:10:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-27 14:10:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:10:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-10-27 14:10:14,420 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 220 [2020-10-27 14:10:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:10:14,421 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-10-27 14:10:14,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 14:10:14,421 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-10-27 14:10:14,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-27 14:10:14,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:10:14,423 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 16, 16, 3, 3, 3, 3, 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 14:10:14,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:10:14,423 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:10:14,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:10:14,424 INFO L82 PathProgramCache]: Analyzing trace with hash -16629477, now seen corresponding path program 16 times [2020-10-27 14:10:14,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:10:14,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53016944] [2020-10-27 14:10:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:10:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:14,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:14,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:19,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:19,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-27 14:10:19,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:10:19,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:10:19,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:10:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-27 14:10:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:10:19,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:19,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:10:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:19,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:19,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:19,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:10:19,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:10:19,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:10:19,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:10:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:10:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:10:19,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:19,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:10:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:19,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:19,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:19,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:19,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:10:19,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:19,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-27 14:10:19,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:10:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:10:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:10:19,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:10:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:21,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:21,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:10:21,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:21,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 14:10:21,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:10:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:10:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:10:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:21,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-27 14:10:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:21,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:21,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:21,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:21,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:10:21,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:21,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-27 14:10:21,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:10:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 14:10:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:10:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6994 backedges. 729 proven. 5475 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2020-10-27 14:10:21,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53016944] [2020-10-27 14:10:21,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:10:21,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-27 14:10:21,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005074646] [2020-10-27 14:10:21,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-27 14:10:21,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:10:21,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-27 14:10:21,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=1649, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:10:21,649 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 48 states. [2020-10-27 14:10:24,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:10:24,038 INFO L93 Difference]: Finished difference Result 221 states and 232 transitions. [2020-10-27 14:10:24,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 14:10:24,039 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 228 [2020-10-27 14:10:24,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:10:24,041 INFO L225 Difference]: With dead ends: 221 [2020-10-27 14:10:24,041 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 14:10:24,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1475, Invalid=4225, Unknown=0, NotChecked=0, Total=5700 [2020-10-27 14:10:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 14:10:24,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-27 14:10:24,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:10:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2020-10-27 14:10:24,050 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 228 [2020-10-27 14:10:24,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:10:24,050 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2020-10-27 14:10:24,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-27 14:10:24,050 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2020-10-27 14:10:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-27 14:10:24,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:10:24,052 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 17, 17, 3, 3, 3, 3, 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 14:10:24,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:10:24,052 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:10:24,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:10:24,053 INFO L82 PathProgramCache]: Analyzing trace with hash -132658697, now seen corresponding path program 17 times [2020-10-27 14:10:24,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:10:24,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101718179] [2020-10-27 14:10:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:10:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:24,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:24,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:29,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:29,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 14:10:29,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:10:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 14:10:29,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:10:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 14:10:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:10:29,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:10:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:29,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:29,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:29,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:10:29,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:10:29,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:10:29,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:10:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:10:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:10:29,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:10:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:29,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:29,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:29,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:10:29,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-27 14:10:29,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:10:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:10:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:10:29,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:30,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:10:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:30,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:30,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:30,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:30,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:10:30,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:30,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-27 14:10:30,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:10:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:10:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:10:30,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-27 14:10:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:30,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:30,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:31,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:31,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:10:31,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-27 14:10:31,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:10:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:10:31,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:10:31,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7528 backedges. 784 proven. 5897 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2020-10-27 14:10:31,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101718179] [2020-10-27 14:10:31,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:10:31,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-27 14:10:31,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76707300] [2020-10-27 14:10:31,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-27 14:10:31,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:10:31,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-27 14:10:31,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=1794, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 14:10:31,133 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand 50 states. [2020-10-27 14:10:33,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:10:33,750 INFO L93 Difference]: Finished difference Result 229 states and 240 transitions. [2020-10-27 14:10:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 14:10:33,751 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 236 [2020-10-27 14:10:33,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:10:33,752 INFO L225 Difference]: With dead ends: 229 [2020-10-27 14:10:33,753 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 14:10:33,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1584, Invalid=4578, Unknown=0, NotChecked=0, Total=6162 [2020-10-27 14:10:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 14:10:33,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-27 14:10:33,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 14:10:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-10-27 14:10:33,764 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 236 [2020-10-27 14:10:33,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:10:33,765 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-10-27 14:10:33,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-27 14:10:33,765 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-10-27 14:10:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-27 14:10:33,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:10:33,767 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 18, 18, 3, 3, 3, 3, 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 14:10:33,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:10:33,768 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:10:33,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:10:33,768 INFO L82 PathProgramCache]: Analyzing trace with hash 781032915, now seen corresponding path program 18 times [2020-10-27 14:10:33,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:10:33,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851582789] [2020-10-27 14:10:33,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:10:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:33,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:33,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:33,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:38,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:38,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 14:10:38,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:10:38,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:10:38,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:38,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:10:38,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-27 14:10:38,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:10:38,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:39,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:10:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:39,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:39,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:10:39,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:10:39,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:10:39,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:10:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:10:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:10:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:39,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:10:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:39,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:39,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:39,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:10:39,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:39,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 14:10:39,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:10:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:10:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:10:39,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:40,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:10:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:40,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:40,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:40,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:10:40,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-27 14:10:40,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:10:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:10:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:10:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:40,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 14:10:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:40,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:40,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:41,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:41,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:10:41,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:41,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 14:10:41,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:10:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-27 14:10:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:10:41,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8082 backedges. 841 proven. 6335 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2020-10-27 14:10:41,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851582789] [2020-10-27 14:10:41,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:10:41,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-27 14:10:41,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134414174] [2020-10-27 14:10:41,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-27 14:10:41,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:10:41,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-27 14:10:41,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=1945, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:10:41,209 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 52 states. [2020-10-27 14:10:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:10:44,132 INFO L93 Difference]: Finished difference Result 237 states and 248 transitions. [2020-10-27 14:10:44,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 14:10:44,134 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 244 [2020-10-27 14:10:44,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:10:44,136 INFO L225 Difference]: With dead ends: 237 [2020-10-27 14:10:44,136 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:10:44,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1697, Invalid=4945, Unknown=0, NotChecked=0, Total=6642 [2020-10-27 14:10:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:10:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-27 14:10:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:10:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2020-10-27 14:10:44,147 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 244 [2020-10-27 14:10:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:10:44,147 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2020-10-27 14:10:44,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-27 14:10:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2020-10-27 14:10:44,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 14:10:44,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:10:44,149 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 19, 19, 3, 3, 3, 3, 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 14:10:44,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:10:44,149 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:10:44,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:10:44,150 INFO L82 PathProgramCache]: Analyzing trace with hash 398621871, now seen corresponding path program 19 times [2020-10-27 14:10:44,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:10:44,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258907977] [2020-10-27 14:10:44,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:10:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:44,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:44,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:49,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:49,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 14:10:49,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:10:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 14:10:49,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:10:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 14:10:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:10:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:10:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:49,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:49,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:49,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:10:49,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:10:49,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:10:49,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:10:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:10:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:10:49,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:49,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:10:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:49,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:49,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:49,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:10:49,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:49,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-27 14:10:49,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:10:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:10:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:10:49,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:51,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:10:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:51,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:51,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:51,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:51,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:10:51,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:51,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 14:10:51,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:10:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:10:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:10:51,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-27 14:10:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:51,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:51,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:51,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:10:51,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:10:51,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:10:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 14:10:51,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:10:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:10:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 14:10:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:10:51,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:10:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8656 backedges. 900 proven. 6789 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2020-10-27 14:10:51,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258907977] [2020-10-27 14:10:51,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:10:51,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-27 14:10:51,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615037855] [2020-10-27 14:10:51,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-27 14:10:51,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:10:51,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-27 14:10:51,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:10:51,767 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 54 states. [2020-10-27 14:10:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:10:55,087 INFO L93 Difference]: Finished difference Result 245 states and 256 transitions. [2020-10-27 14:10:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 14:10:55,088 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 252 [2020-10-27 14:10:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:10:55,091 INFO L225 Difference]: With dead ends: 245 [2020-10-27 14:10:55,092 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 14:10:55,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1814, Invalid=5326, Unknown=0, NotChecked=0, Total=7140 [2020-10-27 14:10:55,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 14:10:55,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-27 14:10:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 14:10:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2020-10-27 14:10:55,104 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 252 [2020-10-27 14:10:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:10:55,105 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2020-10-27 14:10:55,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-27 14:10:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2020-10-27 14:10:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 14:10:55,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:10:55,107 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 20, 20, 3, 3, 3, 3, 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 14:10:55,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:10:55,108 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:10:55,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:10:55,108 INFO L82 PathProgramCache]: Analyzing trace with hash 763700875, now seen corresponding path program 20 times [2020-10-27 14:10:55,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:10:55,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67789470] [2020-10-27 14:10:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:10:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:10:55,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:55,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:10:55,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:00,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:00,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 14:11:00,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:11:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:11:00,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:11:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-27 14:11:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:11:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:00,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:00,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:00,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:00,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:11:00,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:00,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:11:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:00,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:00,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:00,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:00,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:11:00,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:11:00,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-27 14:11:00,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:00,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:11:00,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:11:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:11:00,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0