/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/mapsum2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:39:40,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:39:40,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:39:40,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:39:40,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:39:40,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:39:40,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:39:40,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:39:40,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:39:40,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:39:40,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:39:40,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:39:40,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:39:40,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:39:40,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:39:40,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:39:40,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:39:40,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:39:40,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:39:40,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:39:40,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:39:40,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:39:40,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:39:40,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:39:40,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:39:40,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:39:40,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:39:40,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:39:40,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:39:40,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:39:40,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:39:40,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:39:40,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:39:40,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:39:40,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:39:40,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:39:40,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:39:40,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:39:40,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:39:40,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:39:40,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:39:40,327 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 [2020-10-28 08:39:40,385 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:39:40,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:39:40,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:39:40,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:39:40,390 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:39:40,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:39:40,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:39:40,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:39:40,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:39:40,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:39:40,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:39:40,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:39:40,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:39:40,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:39:40,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:39:40,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:39:40,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:39:40,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:39:40,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:39:40,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:39:40,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:39:40,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:39:40,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:39:40,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:39:40,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:39:40,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:39:40,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:39:40,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:39:40,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:39:40,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:39:40,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:39:40,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:39:40,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:39:40,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:39:40,914 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:39:40,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum2.i [2020-10-28 08:39:41,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc3a19cd7/07f663ee79cf49e4bd294f90cca36eea/FLAG8781b2e53 [2020-10-28 08:39:41,724 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:39:41,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum2.i [2020-10-28 08:39:41,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc3a19cd7/07f663ee79cf49e4bd294f90cca36eea/FLAG8781b2e53 [2020-10-28 08:39:42,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc3a19cd7/07f663ee79cf49e4bd294f90cca36eea [2020-10-28 08:39:42,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:39:42,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:39:42,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:39:42,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:39:42,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:39:42,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:42" (1/1) ... [2020-10-28 08:39:42,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc05a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:42, skipping insertion in model container [2020-10-28 08:39:42,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:42" (1/1) ... [2020-10-28 08:39:42,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:39:42,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:39:42,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:39:42,335 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:39:42,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:39:42,381 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:39:42,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:42 WrapperNode [2020-10-28 08:39:42,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:39:42,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:39:42,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:39:42,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:39:42,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:42" (1/1) ... [2020-10-28 08:39:42,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:42" (1/1) ... [2020-10-28 08:39:42,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:42" (1/1) ... [2020-10-28 08:39:42,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:42" (1/1) ... [2020-10-28 08:39:42,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:42" (1/1) ... [2020-10-28 08:39:42,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:42" (1/1) ... [2020-10-28 08:39:42,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:42" (1/1) ... [2020-10-28 08:39:42,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:39:42,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:39:42,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:39:42,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:39:42,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:42" (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 [2020-10-28 08:39:42,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:39:42,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:39:42,528 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:39:42,529 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-28 08:39:42,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:39:42,529 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:39:42,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:39:42,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 08:39:42,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 08:39:42,530 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:39:42,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:39:42,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 08:39:42,531 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-28 08:39:42,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:39:42,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:39:42,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:39:42,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:39:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:39:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:39:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:39:42,998 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:39:42,998 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 08:39:43,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:43 BoogieIcfgContainer [2020-10-28 08:39:43,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:39:43,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:39:43,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:39:43,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:39:43,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:39:42" (1/3) ... [2020-10-28 08:39:43,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eddf4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:43, skipping insertion in model container [2020-10-28 08:39:43,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:42" (2/3) ... [2020-10-28 08:39:43,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eddf4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:43, skipping insertion in model container [2020-10-28 08:39:43,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:43" (3/3) ... [2020-10-28 08:39:43,018 INFO L111 eAbstractionObserver]: Analyzing ICFG mapsum2.i [2020-10-28 08:39:43,065 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:39:43,075 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:39:43,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:39:43,160 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:39:43,160 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:39:43,160 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:39:43,161 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:39:43,161 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:39:43,161 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:39:43,161 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:39:43,161 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:39:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-28 08:39:43,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 08:39:43,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:43,206 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] [2020-10-28 08:39:43,207 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:43,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:43,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-28 08:39:43,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:43,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719320512] [2020-10-28 08:39:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:43,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:44,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:45,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 08:39:45,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:39:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1726 [2020-10-28 08:39:45,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:45,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:39:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:45,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:39:45,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:45,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:45,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:45,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 08:39:45,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:45,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:45,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:45,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:39:45,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:45,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:45,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:45,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:45,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:39:45,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:45,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:45,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:45,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:39:45,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:45,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:45,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:39:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:45,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:45,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:45,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 08:39:45,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:45,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:45,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:45,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:45,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:39:45,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:39:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:45,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:45,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:45,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:45,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:39:45,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:45,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:39:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:45,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 08:39:45,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719320512] [2020-10-28 08:39:45,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:45,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-28 08:39:45,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216385967] [2020-10-28 08:39:45,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:39:45,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:45,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:39:45,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:39:45,452 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-28 08:39:45,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:45,558 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-28 08:39:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:39:45,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-28 08:39:45,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:45,569 INFO L225 Difference]: With dead ends: 60 [2020-10-28 08:39:45,570 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 08:39:45,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:39:45,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 08:39:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 08:39:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 08:39:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-28 08:39:45,623 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-28 08:39:45,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:45,624 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-28 08:39:45,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:39:45,624 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-28 08:39:45,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 08:39:45,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:45,627 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] [2020-10-28 08:39:45,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:39:45,627 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:45,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:45,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1640105647, now seen corresponding path program 1 times [2020-10-28 08:39:45,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:45,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706745950] [2020-10-28 08:39:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:45,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:47,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 08:39:47,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:39:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1704 [2020-10-28 08:39:47,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:47,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:47,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:47,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:47,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:47,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:47,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:47,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:39:47,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:47,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:47,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:47,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:47,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:47,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:47,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 08:39:47,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:47,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:47,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:47,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:39:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:47,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:47,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:47,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:47,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:39:47,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:47,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:47,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:47,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:39:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:47,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:47,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:47,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:47,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:39:47,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:47,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:47,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:47,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:47,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:47,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 08:39:47,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706745950] [2020-10-28 08:39:47,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:39:47,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:39:47,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126253585] [2020-10-28 08:39:47,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:47,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:47,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:47,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:47,463 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-28 08:39:47,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:47,557 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-28 08:39:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:47,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 08:39:47,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:47,559 INFO L225 Difference]: With dead ends: 50 [2020-10-28 08:39:47,559 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 08:39:47,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:47,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 08:39:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-28 08:39:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 08:39:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-28 08:39:47,570 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-28 08:39:47,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:47,570 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-28 08:39:47,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-28 08:39:47,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 08:39:47,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:47,574 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, 1, 1] [2020-10-28 08:39:47,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:39:47,575 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:47,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:47,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1356580685, now seen corresponding path program 1 times [2020-10-28 08:39:47,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:47,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701357853] [2020-10-28 08:39:47,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:47,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:48,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:50,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 08:39:50,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:39:50,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2427 [2020-10-28 08:39:50,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:50,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:50,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:50,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:50,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:50,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:39:50,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:50,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:50,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:50,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 08:39:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:50,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:50,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:50,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:50,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:39:50,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:50,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:50,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:50,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 08:39:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:50,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:50,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:50,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:50,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 08:39:50,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:50,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:50,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:50,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:50,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:39:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:50,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:50,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:50,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 08:39:50,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:50,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:50,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 08:39:50,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701357853] [2020-10-28 08:39:50,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:50,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:39:50,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303180790] [2020-10-28 08:39:50,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:39:50,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:50,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:39:50,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:50,173 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-28 08:39:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:50,371 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-28 08:39:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:39:50,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-28 08:39:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:50,373 INFO L225 Difference]: With dead ends: 52 [2020-10-28 08:39:50,373 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 08:39:50,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:50,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 08:39:50,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 08:39:50,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 08:39:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-28 08:39:50,393 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-28 08:39:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:50,395 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-28 08:39:50,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:39:50,395 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-28 08:39:50,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 08:39:50,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:50,397 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 08:39:50,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:39:50,397 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:50,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:50,399 INFO L82 PathProgramCache]: Analyzing trace with hash 527968149, now seen corresponding path program 2 times [2020-10-28 08:39:50,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:50,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883743245] [2020-10-28 08:39:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:53,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 08:39:53,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:39:53,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3264 [2020-10-28 08:39:53,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:53,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 08:39:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:53,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:53,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:53,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:53,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:53,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:39:53,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:53,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:53,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 08:39:53,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:53,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:53,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:53,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:53,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:39:53,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:53,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:53,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:53,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 08:39:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:53,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:53,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:53,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:53,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:39:53,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:53,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:53,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:53,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:53,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:53,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:53,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:39:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:53,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:53,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:53,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:39:53,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:53,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:53,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 08:39:53,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883743245] [2020-10-28 08:39:53,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:39:53,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:39:53,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995990966] [2020-10-28 08:39:53,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:53,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:53,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:53,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:53,807 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-10-28 08:39:53,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:53,947 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-28 08:39:53,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:53,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-28 08:39:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:53,949 INFO L225 Difference]: With dead ends: 52 [2020-10-28 08:39:53,949 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 08:39:53,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 08:39:53,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-28 08:39:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 08:39:53,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-28 08:39:53,968 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 38 [2020-10-28 08:39:53,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:53,968 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-28 08:39:53,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:53,969 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-28 08:39:53,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 08:39:53,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:53,972 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-28 08:39:53,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:39:53,973 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:53,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:53,973 INFO L82 PathProgramCache]: Analyzing trace with hash 147249011, now seen corresponding path program 1 times [2020-10-28 08:39:53,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:53,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380962059] [2020-10-28 08:39:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:54,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:59,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 08:39:59,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:59,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:39:59,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:59,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:59,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:59,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 08:39:59,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:59,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:59,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:59,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:59,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:59,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:59,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:39:59,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:59,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:59,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:59,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:59,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:59,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:59,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:59,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:39:59,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:59,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:59,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:59,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:39:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:59,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:59,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:59,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:39:59,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:59,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:59,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:59,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:59,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:59,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:59,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:39:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:59,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:59,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:39:59,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:59,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:59,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:59,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:59,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 08:39:59,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380962059] [2020-10-28 08:39:59,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:59,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:39:59,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706045701] [2020-10-28 08:39:59,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:39:59,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:59,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:39:59,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:59,156 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-28 08:39:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:59,321 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-28 08:39:59,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:39:59,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-28 08:39:59,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:59,323 INFO L225 Difference]: With dead ends: 55 [2020-10-28 08:39:59,323 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 08:39:59,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:39:59,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 08:39:59,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-28 08:39:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 08:39:59,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-28 08:39:59,337 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 44 [2020-10-28 08:39:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:59,338 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-28 08:39:59,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:39:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-28 08:39:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 08:39:59,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:59,342 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-10-28 08:39:59,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:39:59,343 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:59,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:59,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1486624559, now seen corresponding path program 2 times [2020-10-28 08:39:59,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:59,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969141633] [2020-10-28 08:39:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:00,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:04,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 08:40:04,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:04,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 08:40:04,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:04,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:40:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 08:40:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:40:04,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:04,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:04,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:04,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:04,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:04,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:40:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:04,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:04,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:04,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:04,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:40:04,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:04,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:04,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:40:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:04,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:04,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:04,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:40:04,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:04,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:04,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:40:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:04,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:04,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:04,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:40:04,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:04,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-28 08:40:04,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969141633] [2020-10-28 08:40:04,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:40:04,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:40:04,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397427758] [2020-10-28 08:40:04,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:40:04,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:04,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:40:04,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:40:04,563 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-28 08:40:04,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:04,654 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-28 08:40:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:40:04,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 08:40:04,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:04,658 INFO L225 Difference]: With dead ends: 53 [2020-10-28 08:40:04,658 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 08:40:04,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:40:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 08:40:04,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-28 08:40:04,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 08:40:04,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-28 08:40:04,672 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-28 08:40:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:04,674 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-28 08:40:04,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:40:04,676 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-28 08:40:04,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 08:40:04,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:04,679 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1] [2020-10-28 08:40:04,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:40:04,679 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:04,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1352891471, now seen corresponding path program 1 times [2020-10-28 08:40:04,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:04,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157824024] [2020-10-28 08:40:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:05,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:09,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 08:40:09,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:09,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:40:09,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:09,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:40:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:09,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:09,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:09,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:09,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:09,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:40:09,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:09,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:09,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:40:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:09,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:09,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:09,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:09,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 08:40:09,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:09,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:09,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:09,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:40:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:09,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:09,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:09,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:40:09,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:09,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:09,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:09,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:40:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:09,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:09,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:09,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:09,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:40:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:09,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-28 08:40:09,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157824024] [2020-10-28 08:40:09,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:09,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:40:09,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392049920] [2020-10-28 08:40:09,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:40:09,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:09,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:40:09,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:09,881 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-28 08:40:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:10,052 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-28 08:40:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:40:10,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-28 08:40:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:10,054 INFO L225 Difference]: With dead ends: 61 [2020-10-28 08:40:10,054 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 08:40:10,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 08:40:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-28 08:40:10,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 08:40:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-28 08:40:10,061 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-28 08:40:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:10,062 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-28 08:40:10,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:40:10,062 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-28 08:40:10,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 08:40:10,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:10,063 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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, 1, 1] [2020-10-28 08:40:10,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:40:10,064 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:10,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:10,065 INFO L82 PathProgramCache]: Analyzing trace with hash -67135571, now seen corresponding path program 2 times [2020-10-28 08:40:10,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:10,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440816715] [2020-10-28 08:40:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:10,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:11,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:15,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 08:40:15,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 08:40:15,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:15,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:15,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:15,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:15,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:15,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:15,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:15,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:15,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:15,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:40:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:15,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:15,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:40:15,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:15,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:15,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:15,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:15,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:15,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:15,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 08:40:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:15,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:15,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:15,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:15,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:40:15,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:15,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:15,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:15,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:15,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:15,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:40:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:15,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:15,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:15,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:15,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:40:15,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:15,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:15,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 08:40:15,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440816715] [2020-10-28 08:40:15,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:15,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:40:15,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177886914] [2020-10-28 08:40:15,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:40:15,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:15,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:40:15,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:15,282 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-28 08:40:15,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:15,386 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-10-28 08:40:15,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:40:15,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-28 08:40:15,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:15,388 INFO L225 Difference]: With dead ends: 66 [2020-10-28 08:40:15,388 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 08:40:15,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:15,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 08:40:15,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 08:40:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 08:40:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-28 08:40:15,403 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-28 08:40:15,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:15,403 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-28 08:40:15,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:40:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-28 08:40:15,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 08:40:15,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:15,407 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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, 1, 1] [2020-10-28 08:40:15,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:40:15,408 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:15,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:15,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1202302705, now seen corresponding path program 3 times [2020-10-28 08:40:15,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:15,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038798395] [2020-10-28 08:40:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:15,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:16,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:20,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 08:40:20,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:20,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:40:20,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:20,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:20,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:40:20,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 08:40:20,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:40:20,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:20,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:20,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:20,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:20,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:40:20,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:20,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:20,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:20,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:20,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:20,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:20,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 08:40:20,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:20,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:20,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:20,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 08:40:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:20,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:20,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:20,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:40:20,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:20,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:20,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:40:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:20,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:20,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:20,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:40:20,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:20,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-28 08:40:20,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038798395] [2020-10-28 08:40:20,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:20,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:40:20,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703935613] [2020-10-28 08:40:20,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:40:20,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:20,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:40:20,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:40:20,607 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-10-28 08:40:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:20,693 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-28 08:40:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:40:20,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-28 08:40:20,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:20,694 INFO L225 Difference]: With dead ends: 61 [2020-10-28 08:40:20,694 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 08:40:20,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:40:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 08:40:20,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-28 08:40:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 08:40:20,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-28 08:40:20,701 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-28 08:40:20,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:20,701 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-28 08:40:20,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:40:20,701 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-28 08:40:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 08:40:20,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:20,703 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 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] [2020-10-28 08:40:20,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:40:20,703 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:20,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1065768205, now seen corresponding path program 4 times [2020-10-28 08:40:20,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:20,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581631458] [2020-10-28 08:40:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:25,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 08:40:25,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 08:40:25,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:25,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 08:40:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:25,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:25,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:25,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:25,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:25,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:25,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:25,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:25,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:25,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:25,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:25,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:25,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:25,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:25,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:25,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:25,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:40:25,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:25,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:25,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:25,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:25,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:25,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 08:40:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:25,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:25,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:25,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:25,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:40:25,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:25,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:25,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 08:40:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:25,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:25,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:25,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:25,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:40:25,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:25,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-28 08:40:25,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581631458] [2020-10-28 08:40:25,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:25,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:40:25,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360989038] [2020-10-28 08:40:25,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:40:25,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:25,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:40:25,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:25,903 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-28 08:40:26,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:26,094 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-28 08:40:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:40:26,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-28 08:40:26,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:26,096 INFO L225 Difference]: With dead ends: 71 [2020-10-28 08:40:26,096 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 08:40:26,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:40:26,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 08:40:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-28 08:40:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 08:40:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-28 08:40:26,102 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-28 08:40:26,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:26,103 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-28 08:40:26,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:40:26,103 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-28 08:40:26,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 08:40:26,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:26,104 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 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] [2020-10-28 08:40:26,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:40:26,104 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:26,105 INFO L82 PathProgramCache]: Analyzing trace with hash 54216939, now seen corresponding path program 5 times [2020-10-28 08:40:26,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:26,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460044245] [2020-10-28 08:40:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:28,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:31,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 08:40:31,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:31,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:40:31,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:31,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:31,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:31,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 08:40:31,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:31,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:31,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:31,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:31,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:31,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:31,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:31,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:31,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:31,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:40:31,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:31,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 08:40:31,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:31,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:31,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:31,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:40:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:31,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:31,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:40:31,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 08:40:31,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:31,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 08:40:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:31,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:31,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:40:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:31,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:31,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:40:31,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 08:40:31,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:31,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 08:40:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 08:40:31,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460044245] [2020-10-28 08:40:31,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:31,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:40:31,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196864090] [2020-10-28 08:40:31,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:40:31,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:31,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:40:31,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:31,329 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-10-28 08:40:31,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:31,728 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-10-28 08:40:31,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:40:31,729 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-28 08:40:31,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:31,730 INFO L225 Difference]: With dead ends: 75 [2020-10-28 08:40:31,730 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 08:40:31,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:40:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 08:40:31,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 08:40:31,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 08:40:31,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-28 08:40:31,739 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-28 08:40:31,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:31,739 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-28 08:40:31,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:40:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-28 08:40:31,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 08:40:31,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:31,740 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 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] [2020-10-28 08:40:31,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:40:31,741 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:31,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:31,741 INFO L82 PathProgramCache]: Analyzing trace with hash -861790647, now seen corresponding path program 6 times [2020-10-28 08:40:31,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:31,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620224397] [2020-10-28 08:40:31,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:36,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 08:40:36,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:36,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:40:36,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:36,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:36,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:36,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:36,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:36,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:36,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:36,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:36,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:36,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:36,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:36,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:36,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:36,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:36,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:36,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:36,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:36,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:36,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:36,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:40:36,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:36,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:36,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:40:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:36,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:36,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:36,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:36,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:40:36,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:36,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:36,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:36,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:40:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:36,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:36,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:36,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:36,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 08:40:36,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:36,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:36,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:36,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-28 08:40:36,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620224397] [2020-10-28 08:40:36,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:36,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:40:36,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074234731] [2020-10-28 08:40:36,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:40:36,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:36,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:40:36,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:36,965 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-28 08:40:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:37,100 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-28 08:40:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:40:37,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-28 08:40:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:37,102 INFO L225 Difference]: With dead ends: 80 [2020-10-28 08:40:37,102 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 08:40:37,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:37,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 08:40:37,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 08:40:37,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 08:40:37,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-28 08:40:37,109 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 74 [2020-10-28 08:40:37,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:37,109 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-28 08:40:37,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:40:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-28 08:40:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 08:40:37,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:37,110 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 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] [2020-10-28 08:40:37,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:40:37,111 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:37,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:37,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1083321429, now seen corresponding path program 7 times [2020-10-28 08:40:37,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:37,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490771564] [2020-10-28 08:40:37,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:40,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:42,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:40:42,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:42,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 08:40:42,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:42,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:42,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:42,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:42,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:42,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:42,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:42,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:42,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:42,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:40:42,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:42,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:42,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:42,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:42,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:42,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:42,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 08:40:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:42,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:42,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 08:40:42,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:42,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 08:40:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:42,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:42,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:42,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:40:42,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:42,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:42,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:42,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:40:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:42,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:42,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:42,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:42,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 08:40:42,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:42,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:42,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-28 08:40:42,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490771564] [2020-10-28 08:40:42,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:42,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:40:42,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662826451] [2020-10-28 08:40:42,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:40:42,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:42,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:40:42,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:42,350 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-28 08:40:42,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:42,507 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-28 08:40:42,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:40:42,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-28 08:40:42,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:42,509 INFO L225 Difference]: With dead ends: 82 [2020-10-28 08:40:42,509 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 08:40:42,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:42,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 08:40:42,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-28 08:40:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 08:40:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-28 08:40:42,518 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-28 08:40:42,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:42,518 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-28 08:40:42,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:40:42,519 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-28 08:40:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 08:40:42,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:42,520 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 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] [2020-10-28 08:40:42,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:40:42,520 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:42,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:42,520 INFO L82 PathProgramCache]: Analyzing trace with hash 773961869, now seen corresponding path program 8 times [2020-10-28 08:40:42,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:42,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931171064] [2020-10-28 08:40:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:42,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:47,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 08:40:47,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:40:47,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:47,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 08:40:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:47,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:47,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:47,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:47,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:47,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:47,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:47,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:47,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:47,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:47,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:47,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:47,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 08:40:47,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:47,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:47,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 08:40:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:47,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:47,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:47,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 08:40:47,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:47,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:47,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:47,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:47,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:47,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 08:40:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:47,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:47,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:47,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:47,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 08:40:47,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:47,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:47,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 08:40:47,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931171064] [2020-10-28 08:40:47,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:47,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:40:47,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255415780] [2020-10-28 08:40:47,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:40:47,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:47,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:40:47,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:47,831 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-10-28 08:40:47,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:47,967 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-28 08:40:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:40:47,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-28 08:40:47,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:47,969 INFO L225 Difference]: With dead ends: 75 [2020-10-28 08:40:47,969 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 08:40:47,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:47,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 08:40:47,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-28 08:40:47,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 08:40:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-28 08:40:47,990 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-28 08:40:47,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:47,993 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-28 08:40:47,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:40:47,993 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-28 08:40:47,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 08:40:47,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:47,995 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 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] [2020-10-28 08:40:47,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:40:47,995 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:47,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:47,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1570956555, now seen corresponding path program 9 times [2020-10-28 08:40:47,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:48,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652937750] [2020-10-28 08:40:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:48,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:52,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:53,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 08:40:53,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:53,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 08:40:53,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:53,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 08:40:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:53,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:53,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:53,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:53,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:53,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:53,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:53,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:53,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:53,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:53,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:53,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:53,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 08:40:53,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:53,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:53,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 08:40:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:53,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:53,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:53,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 08:40:53,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:53,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:53,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:53,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:53,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:53,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:53,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:40:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:53,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:53,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:53,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 08:40:53,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:53,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:53,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-28 08:40:53,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652937750] [2020-10-28 08:40:53,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:53,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:40:53,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205301927] [2020-10-28 08:40:53,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:40:53,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:53,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:40:53,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:53,325 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-28 08:40:53,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:53,681 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-28 08:40:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:40:53,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-28 08:40:53,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:53,682 INFO L225 Difference]: With dead ends: 87 [2020-10-28 08:40:53,683 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 08:40:53,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:40:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 08:40:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-28 08:40:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 08:40:53,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-28 08:40:53,689 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-28 08:40:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:53,689 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-28 08:40:53,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:40:53,690 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-28 08:40:53,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 08:40:53,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:53,691 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 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] [2020-10-28 08:40:53,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:40:53,691 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:53,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:53,691 INFO L82 PathProgramCache]: Analyzing trace with hash -2099887767, now seen corresponding path program 10 times [2020-10-28 08:40:53,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:53,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592895609] [2020-10-28 08:40:53,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:53,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:58,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 08:40:58,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:58,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 08:40:58,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:58,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:58,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:58,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 08:40:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:58,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:58,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:58,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:58,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:58,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:58,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:58,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:58,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:58,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:58,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:58,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:58,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 08:40:58,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:58,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:58,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:58,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:40:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:58,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:58,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:58,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:58,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 08:40:58,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:58,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:58,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:58,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:40:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:59,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:59,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:59,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 08:40:59,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:59,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:40:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:59,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-28 08:40:59,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592895609] [2020-10-28 08:40:59,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:59,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:40:59,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586244908] [2020-10-28 08:40:59,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:40:59,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:59,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:40:59,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:40:59,069 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 10 states. [2020-10-28 08:40:59,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:59,385 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-28 08:40:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:40:59,386 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-28 08:40:59,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:59,387 INFO L225 Difference]: With dead ends: 91 [2020-10-28 08:40:59,387 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 08:40:59,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:40:59,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 08:40:59,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-28 08:40:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 08:40:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-28 08:40:59,402 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-28 08:40:59,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:59,402 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-28 08:40:59,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:40:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-28 08:40:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 08:40:59,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:59,404 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 5, 5, 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] [2020-10-28 08:40:59,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:40:59,404 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:59,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:59,405 INFO L82 PathProgramCache]: Analyzing trace with hash -773972153, now seen corresponding path program 11 times [2020-10-28 08:40:59,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:59,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224303620] [2020-10-28 08:40:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:59,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:59,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:59,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:59,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:04,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 08:41:04,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 08:41:04,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:04,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:41:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:41:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:04,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:04,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:04,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:04,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:41:04,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:04,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:04,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:04,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:41:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:04,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:04,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:04,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:04,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 08:41:04,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:04,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:04,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:04,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:04,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:04,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:04,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 08:41:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:04,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:04,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:04,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 08:41:04,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:04,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:04,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:41:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:04,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:04,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:04,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 08:41:04,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:04,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-28 08:41:04,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224303620] [2020-10-28 08:41:04,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:04,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:41:04,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235179812] [2020-10-28 08:41:04,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:41:04,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:04,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:41:04,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:41:04,732 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-28 08:41:04,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:04,872 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-28 08:41:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:41:04,872 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-28 08:41:04,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:04,873 INFO L225 Difference]: With dead ends: 96 [2020-10-28 08:41:04,873 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 08:41:04,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:41:04,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 08:41:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 08:41:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 08:41:04,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-28 08:41:04,880 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 92 [2020-10-28 08:41:04,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:04,880 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-28 08:41:04,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:41:04,880 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-28 08:41:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 08:41:04,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:04,881 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 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] [2020-10-28 08:41:04,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 08:41:04,882 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:04,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:04,882 INFO L82 PathProgramCache]: Analyzing trace with hash -96468951, now seen corresponding path program 12 times [2020-10-28 08:41:04,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:04,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938297558] [2020-10-28 08:41:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:04,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:09,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:09,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 08:41:09,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:09,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 08:41:09,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:09,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:09,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:41:09,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:09,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:41:09,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:10,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:10,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:10,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:10,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:41:10,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:10,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:10,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 08:41:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:10,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:10,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 08:41:10,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:10,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:10,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:41:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:10,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:10,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:10,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 08:41:10,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:10,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:10,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 08:41:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:10,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:10,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 08:41:10,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:10,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-28 08:41:10,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938297558] [2020-10-28 08:41:10,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:10,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:41:10,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676428683] [2020-10-28 08:41:10,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:41:10,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:10,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:41:10,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:41:10,198 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-28 08:41:10,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:10,324 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-28 08:41:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:41:10,325 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-28 08:41:10,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:10,326 INFO L225 Difference]: With dead ends: 98 [2020-10-28 08:41:10,326 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 08:41:10,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:41:10,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 08:41:10,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 08:41:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 08:41:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-28 08:41:10,334 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-28 08:41:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:10,334 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-28 08:41:10,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:41:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-28 08:41:10,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 08:41:10,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:10,336 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 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] [2020-10-28 08:41:10,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 08:41:10,336 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:10,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1850920821, now seen corresponding path program 13 times [2020-10-28 08:41:10,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:10,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705790171] [2020-10-28 08:41:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:10,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:15,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 08:41:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 08:41:15,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:15,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:41:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 08:41:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:41:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:15,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:15,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:15,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:15,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:15,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:15,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:15,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:15,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:15,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:15,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:15,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:15,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 08:41:15,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:15,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:15,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:15,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:15,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:41:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:15,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:15,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 08:41:15,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:15,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:15,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:15,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:15,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:15,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:41:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:15,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:15,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:15,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 08:41:15,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:15,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-28 08:41:15,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705790171] [2020-10-28 08:41:15,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:15,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:41:15,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586465217] [2020-10-28 08:41:15,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:41:15,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:15,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:41:15,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:41:15,593 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 7 states. [2020-10-28 08:41:15,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:15,729 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-28 08:41:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:41:15,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-28 08:41:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:15,730 INFO L225 Difference]: With dead ends: 89 [2020-10-28 08:41:15,730 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 08:41:15,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:41:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 08:41:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 08:41:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 08:41:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-28 08:41:15,739 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-28 08:41:15,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:15,740 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-28 08:41:15,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:41:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-28 08:41:15,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 08:41:15,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:15,741 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 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] [2020-10-28 08:41:15,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 08:41:15,741 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:15,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:15,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1286956425, now seen corresponding path program 14 times [2020-10-28 08:41:15,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:15,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35953615] [2020-10-28 08:41:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:20,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:20,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 08:41:20,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:20,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:41:20,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:20,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:41:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 08:41:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:41:20,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:20,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:20,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:20,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:20,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:20,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:20,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:20,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:20,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:20,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:20,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:20,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:20,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:20,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:20,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:20,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:20,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 08:41:20,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:20,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:20,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:20,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:41:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:20,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:20,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:20,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:20,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:20,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 08:41:20,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:20,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:41:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:41:20,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:20,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 08:41:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:20,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:20,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:21,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:21,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:21,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:21,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 08:41:21,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:21,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:21,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:21,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:21,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:21,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-28 08:41:21,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35953615] [2020-10-28 08:41:21,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:21,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:41:21,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708523520] [2020-10-28 08:41:21,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:41:21,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:21,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:41:21,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:41:21,040 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-28 08:41:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:21,417 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2020-10-28 08:41:21,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:41:21,418 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-28 08:41:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:21,419 INFO L225 Difference]: With dead ends: 103 [2020-10-28 08:41:21,419 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 08:41:21,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:41:21,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 08:41:21,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-28 08:41:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 08:41:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-28 08:41:21,434 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-28 08:41:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:21,435 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-28 08:41:21,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:41:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-28 08:41:21,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 08:41:21,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:21,438 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 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] [2020-10-28 08:41:21,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 08:41:21,439 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:21,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:21,439 INFO L82 PathProgramCache]: Analyzing trace with hash 375589479, now seen corresponding path program 15 times [2020-10-28 08:41:21,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:21,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40665161] [2020-10-28 08:41:21,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:21,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:21,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:21,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:21,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:26,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 08:41:26,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 08:41:26,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:26,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:41:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:26,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:41:26,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:26,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:26,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:26,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:41:26,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:26,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:26,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:26,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:26,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:26,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:26,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:26,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 08:41:26,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:26,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:26,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:41:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:26,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:26,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:26,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 08:41:26,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:26,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:26,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:26,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:26,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:26,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:26,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 08:41:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:26,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:26,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:26,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:26,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 08:41:26,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:26,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:26,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:26,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:26,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:26,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2020-10-28 08:41:26,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40665161] [2020-10-28 08:41:26,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:26,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:41:26,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830828439] [2020-10-28 08:41:26,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:41:26,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:26,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:41:26,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:41:26,810 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-28 08:41:26,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:26,950 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-10-28 08:41:26,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:41:26,951 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-28 08:41:26,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:26,952 INFO L225 Difference]: With dead ends: 108 [2020-10-28 08:41:26,952 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 08:41:26,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:41:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 08:41:26,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-28 08:41:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 08:41:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-28 08:41:26,959 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2020-10-28 08:41:26,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:26,959 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-28 08:41:26,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:41:26,960 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-28 08:41:26,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 08:41:26,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:26,961 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 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] [2020-10-28 08:41:26,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 08:41:26,961 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:26,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:26,963 INFO L82 PathProgramCache]: Analyzing trace with hash -358569911, now seen corresponding path program 16 times [2020-10-28 08:41:26,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:26,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385290141] [2020-10-28 08:41:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:26,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:27,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:32,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 08:41:32,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 08:41:32,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:32,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:41:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 08:41:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:41:32,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:32,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:32,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:32,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:32,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:32,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:41:32,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:32,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:32,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:32,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:32,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:32,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:32,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 08:41:32,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:32,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:32,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:32,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:41:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:32,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:32,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:32,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:32,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 08:41:32,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:32,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:32,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:32,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:32,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:32,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:32,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:41:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:32,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:32,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:32,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:32,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 08:41:32,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:32,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:32,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:32,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:32,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:32,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-28 08:41:32,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385290141] [2020-10-28 08:41:32,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:32,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:41:32,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229376578] [2020-10-28 08:41:32,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:41:32,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:32,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:41:32,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:41:32,293 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 8 states. [2020-10-28 08:41:32,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:32,414 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-28 08:41:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:41:32,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-28 08:41:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:32,418 INFO L225 Difference]: With dead ends: 97 [2020-10-28 08:41:32,418 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 08:41:32,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:41:32,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 08:41:32,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-28 08:41:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 08:41:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-28 08:41:32,425 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-28 08:41:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:32,425 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-28 08:41:32,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:41:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-28 08:41:32,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 08:41:32,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:32,426 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 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] [2020-10-28 08:41:32,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 08:41:32,427 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:32,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:32,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1219924537, now seen corresponding path program 17 times [2020-10-28 08:41:32,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:32,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860842005] [2020-10-28 08:41:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:32,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:37,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 08:41:37,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 08:41:37,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:37,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 08:41:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:37,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:37,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:37,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:37,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:37,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:37,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:37,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:37,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:37,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:37,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:37,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 08:41:37,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:37,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:37,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:37,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:41:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:37,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:37,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:37,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 08:41:37,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:37,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:37,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 08:41:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:37,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:37,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:37,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 08:41:37,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:37,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 148 proven. 212 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2020-10-28 08:41:37,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860842005] [2020-10-28 08:41:37,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:37,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:41:37,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045731475] [2020-10-28 08:41:37,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:41:37,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:37,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:41:37,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:37,814 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-28 08:41:38,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:38,251 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-10-28 08:41:38,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:41:38,251 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-28 08:41:38,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:38,252 INFO L225 Difference]: With dead ends: 113 [2020-10-28 08:41:38,252 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 08:41:38,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:41:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 08:41:38,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-28 08:41:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 08:41:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-28 08:41:38,263 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-28 08:41:38,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:38,268 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-28 08:41:38,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:41:38,268 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-28 08:41:38,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 08:41:38,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:38,270 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 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] [2020-10-28 08:41:38,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 08:41:38,270 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:38,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:38,271 INFO L82 PathProgramCache]: Analyzing trace with hash 112757541, now seen corresponding path program 18 times [2020-10-28 08:41:38,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:38,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956474866] [2020-10-28 08:41:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:38,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:43,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 08:41:43,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:43,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 08:41:43,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:43,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 08:41:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:43,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:43,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:43,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:43,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:43,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:43,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:43,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:43,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:43,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:43,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 08:41:43,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:43,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:43,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:43,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:43,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:43,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:43,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 08:41:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:43,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:43,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:43,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 08:41:43,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:43,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 08:41:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:43,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 08:41:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:43,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:43,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:43,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 08:41:43,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:43,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 08:41:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:43,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2020-10-28 08:41:43,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956474866] [2020-10-28 08:41:43,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:43,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:41:43,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743095766] [2020-10-28 08:41:43,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:41:43,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:43,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:41:43,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:43,710 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-28 08:41:44,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:44,214 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-28 08:41:44,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:41:44,214 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-28 08:41:44,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:44,215 INFO L225 Difference]: With dead ends: 117 [2020-10-28 08:41:44,215 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 08:41:44,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:41:44,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 08:41:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-28 08:41:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 08:41:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-28 08:41:44,222 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 114 [2020-10-28 08:41:44,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:44,223 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-28 08:41:44,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:41:44,223 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-28 08:41:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 08:41:44,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:44,224 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 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] [2020-10-28 08:41:44,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 08:41:44,225 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:44,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:44,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1720576515, now seen corresponding path program 19 times [2020-10-28 08:41:44,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:44,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420289868] [2020-10-28 08:41:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:44,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:44,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:44,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:44,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:49,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 08:41:49,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:49,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 08:41:49,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:49,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:49,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:49,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:49,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:49,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:41:49,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:49,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:49,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:49,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:49,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:49,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:49,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 08:41:49,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:49,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:49,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:49,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:41:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:49,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:49,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 08:41:49,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:49,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:49,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 08:41:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:49,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:49,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:49,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 08:41:49,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:49,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:49,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-10-28 08:41:49,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420289868] [2020-10-28 08:41:49,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:49,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:41:49,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043006600] [2020-10-28 08:41:49,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:41:49,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:49,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:41:49,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:49,727 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-28 08:41:49,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:49,892 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2020-10-28 08:41:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:41:49,893 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-28 08:41:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:49,894 INFO L225 Difference]: With dead ends: 122 [2020-10-28 08:41:49,894 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 08:41:49,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 08:41:49,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 08:41:49,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 08:41:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-28 08:41:49,905 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-28 08:41:49,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:49,905 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-28 08:41:49,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:41:49,906 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-28 08:41:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 08:41:49,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:49,909 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 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] [2020-10-28 08:41:49,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 08:41:49,909 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2081979419, now seen corresponding path program 20 times [2020-10-28 08:41:49,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:49,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653988788] [2020-10-28 08:41:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:49,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:54,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:54,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 08:41:54,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:54,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:41:54,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:54,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:54,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:54,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:54,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:54,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:55,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:55,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:55,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:55,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:41:55,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:55,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:55,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:55,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:41:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:55,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:55,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:55,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:55,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 08:41:55,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:55,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:55,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:55,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 08:41:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:55,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:55,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:55,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 08:41:55,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:55,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:55,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:55,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:55,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:55,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:55,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 08:41:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:55,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:55,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 08:41:55,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:55,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-10-28 08:41:55,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653988788] [2020-10-28 08:41:55,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:55,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:41:55,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028813572] [2020-10-28 08:41:55,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:41:55,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:55,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:41:55,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:55,349 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-28 08:41:55,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:55,512 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2020-10-28 08:41:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:41:55,512 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-28 08:41:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:55,513 INFO L225 Difference]: With dead ends: 124 [2020-10-28 08:41:55,513 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 08:41:55,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:55,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 08:41:55,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-28 08:41:55,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 08:41:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-28 08:41:55,520 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-28 08:41:55,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:55,520 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-28 08:41:55,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:41:55,521 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-28 08:41:55,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 08:41:55,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:55,522 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 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] [2020-10-28 08:41:55,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 08:41:55,522 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:55,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:55,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1321063097, now seen corresponding path program 21 times [2020-10-28 08:41:55,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:55,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987383951] [2020-10-28 08:41:55,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:55,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:00,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 08:42:00,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:00,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 08:42:00,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:00,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:42:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 08:42:00,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:42:00,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:00,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:00,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:00,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:00,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:00,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:00,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:00,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:00,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:00,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:42:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:00,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:00,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:42:00,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:00,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 08:42:00,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:00,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:00,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:00,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:00,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:00,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:42:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 08:42:00,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:00,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:00,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 08:42:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:00,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:00,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:42:00,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:00,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 08:42:00,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:00,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:42:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:00,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-28 08:42:00,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987383951] [2020-10-28 08:42:00,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:00,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:42:00,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653589134] [2020-10-28 08:42:00,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:42:00,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:00,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:42:00,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:42:00,994 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 9 states. [2020-10-28 08:42:01,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:01,138 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-28 08:42:01,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:42:01,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-10-28 08:42:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:01,140 INFO L225 Difference]: With dead ends: 111 [2020-10-28 08:42:01,140 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 08:42:01,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:42:01,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 08:42:01,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-28 08:42:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-28 08:42:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-28 08:42:01,150 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-28 08:42:01,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:01,151 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-28 08:42:01,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:42:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-28 08:42:01,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 08:42:01,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:01,155 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 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] [2020-10-28 08:42:01,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 08:42:01,155 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:01,156 INFO L82 PathProgramCache]: Analyzing trace with hash -938034363, now seen corresponding path program 22 times [2020-10-28 08:42:01,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:01,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279778433] [2020-10-28 08:42:01,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:01,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:01,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:06,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 08:42:06,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:06,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:42:06,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:06,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:42:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 08:42:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:42:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:42:06,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:06,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:06,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:06,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:06,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:06,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:06,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:06,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:42:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:06,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:06,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:42:06,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 08:42:06,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:06,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:42:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:42:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:06,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:42:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:06,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:06,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:42:06,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 08:42:06,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:06,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:42:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:06,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:06,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 08:42:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:06,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:06,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:42:06,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 08:42:06,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:06,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:42:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:06,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:06,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2020-10-28 08:42:06,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279778433] [2020-10-28 08:42:06,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:06,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:42:06,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843292759] [2020-10-28 08:42:06,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:42:06,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:06,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:42:06,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:42:06,644 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-28 08:42:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:07,180 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-10-28 08:42:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:42:07,181 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-28 08:42:07,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:07,182 INFO L225 Difference]: With dead ends: 129 [2020-10-28 08:42:07,183 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 08:42:07,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:42:07,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 08:42:07,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-28 08:42:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 08:42:07,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-28 08:42:07,190 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-28 08:42:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:07,191 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-28 08:42:07,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:42:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-28 08:42:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 08:42:07,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:07,192 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 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] [2020-10-28 08:42:07,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 08:42:07,193 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:07,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:07,193 INFO L82 PathProgramCache]: Analyzing trace with hash -791420637, now seen corresponding path program 23 times [2020-10-28 08:42:07,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:07,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595145543] [2020-10-28 08:42:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:07,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:07,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:12,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 08:42:12,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:12,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 08:42:12,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:12,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:42:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:42:12,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:12,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:12,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:12,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:12,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:12,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:12,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:12,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:12,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:42:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:12,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:12,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:12,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:12,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 08:42:12,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:12,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:12,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 08:42:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:12,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:12,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:12,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:12,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 08:42:12,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:12,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:12,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:12,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:12,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:12,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:12,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 08:42:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:12,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:12,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:12,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:12,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 08:42:12,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:12,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:12,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2020-10-28 08:42:12,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595145543] [2020-10-28 08:42:12,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:12,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:42:12,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795006379] [2020-10-28 08:42:12,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:42:12,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:12,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:42:12,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:42:12,760 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-28 08:42:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:12,919 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-28 08:42:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:42:12,920 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-28 08:42:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:12,921 INFO L225 Difference]: With dead ends: 134 [2020-10-28 08:42:12,921 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 08:42:12,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:42:12,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 08:42:12,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-28 08:42:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 08:42:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-28 08:42:12,931 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 132 [2020-10-28 08:42:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:12,931 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-28 08:42:12,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:42:12,931 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-28 08:42:12,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 08:42:12,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:12,933 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 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] [2020-10-28 08:42:12,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 08:42:12,933 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:12,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:12,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1891911675, now seen corresponding path program 24 times [2020-10-28 08:42:12,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:12,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148425443] [2020-10-28 08:42:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:12,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:13,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:13,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:18,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 08:42:18,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 08:42:18,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:18,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:42:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-28 08:42:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:42:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:18,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:18,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:18,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:18,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:18,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:18,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:18,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:18,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:18,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:18,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:18,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:18,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:18,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:18,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:18,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 08:42:18,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:18,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:18,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:18,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:18,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:18,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:18,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:42:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:18,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:18,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:18,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 08:42:18,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:18,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:18,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:18,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 08:42:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:18,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:18,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:18,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:18,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 08:42:18,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:18,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:18,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:18,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:18,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:18,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-28 08:42:18,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148425443] [2020-10-28 08:42:18,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:18,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:42:18,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976072355] [2020-10-28 08:42:18,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:42:18,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:18,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:42:18,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:42:18,429 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 10 states. [2020-10-28 08:42:18,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:18,587 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-28 08:42:18,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:42:18,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-10-28 08:42:18,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:18,589 INFO L225 Difference]: With dead ends: 119 [2020-10-28 08:42:18,589 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 08:42:18,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:42:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 08:42:18,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-28 08:42:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 08:42:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-28 08:42:18,597 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-28 08:42:18,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:18,598 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-28 08:42:18,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:42:18,598 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-28 08:42:18,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 08:42:18,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:18,599 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 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] [2020-10-28 08:42:18,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 08:42:18,599 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:18,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:18,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1431169405, now seen corresponding path program 25 times [2020-10-28 08:42:18,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:18,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798030940] [2020-10-28 08:42:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:23,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 08:42:23,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:23,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 08:42:23,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:23,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 08:42:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:23,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:23,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:23,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:23,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:23,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:23,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:23,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:23,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:23,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 08:42:23,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:23,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:23,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:42:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:23,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:24,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:24,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:24,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:24,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 08:42:24,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:24,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:24,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:24,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 08:42:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:24,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:24,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:24,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:24,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:24,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:24,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 08:42:24,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:24,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:24,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:24,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:24,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:24,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2020-10-28 08:42:24,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798030940] [2020-10-28 08:42:24,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:24,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:42:24,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210243824] [2020-10-28 08:42:24,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:42:24,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:24,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:42:24,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:24,272 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-28 08:42:24,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:24,872 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-10-28 08:42:24,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:42:24,873 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-28 08:42:24,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:24,874 INFO L225 Difference]: With dead ends: 139 [2020-10-28 08:42:24,874 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 08:42:24,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-28 08:42:24,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 08:42:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-28 08:42:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 08:42:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-28 08:42:24,881 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-28 08:42:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:24,882 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-28 08:42:24,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:42:24,882 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-28 08:42:24,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 08:42:24,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:24,883 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 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] [2020-10-28 08:42:24,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 08:42:24,883 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:24,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1394510623, now seen corresponding path program 26 times [2020-10-28 08:42:24,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:24,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906777705] [2020-10-28 08:42:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:24,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:25,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:29,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:29,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 08:42:29,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:29,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 08:42:29,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:29,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 08:42:29,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:29,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:29,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:29,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:29,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:29,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:29,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:42:29,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:29,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:29,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:29,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:29,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:29,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:30,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:42:30,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:30,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 08:42:30,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:30,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:30,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 08:42:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:30,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:30,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:42:30,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 08:42:30,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:30,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:30,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:30,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 08:42:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:30,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:30,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:42:30,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:30,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 08:42:30,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:30,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 08:42:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:30,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 316 proven. 460 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2020-10-28 08:42:30,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906777705] [2020-10-28 08:42:30,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:30,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:42:30,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407486359] [2020-10-28 08:42:30,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:42:30,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:30,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:42:30,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:30,523 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-28 08:42:31,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:31,164 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-10-28 08:42:31,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:42:31,164 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-28 08:42:31,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:31,166 INFO L225 Difference]: With dead ends: 143 [2020-10-28 08:42:31,166 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 08:42:31,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-28 08:42:31,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 08:42:31,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-28 08:42:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 08:42:31,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-28 08:42:31,174 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 142 [2020-10-28 08:42:31,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:31,174 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-28 08:42:31,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:42:31,174 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-28 08:42:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 08:42:31,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:31,175 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 11, 11, 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] [2020-10-28 08:42:31,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 08:42:31,176 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:31,176 INFO L82 PathProgramCache]: Analyzing trace with hash -544680769, now seen corresponding path program 27 times [2020-10-28 08:42:31,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:31,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701503659] [2020-10-28 08:42:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:31,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:31,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:31,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:31,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:36,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 08:42:36,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:36,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 08:42:36,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:36,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:36,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:36,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:36,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:36,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:36,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:36,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:36,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:36,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:36,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:42:36,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:36,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:36,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:36,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:36,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:36,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:36,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 08:42:36,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:36,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:36,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:36,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 08:42:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:36,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:36,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:36,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 08:42:36,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:36,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:36,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 08:42:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:36,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:36,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:36,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 08:42:36,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:36,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:36,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 08:42:36,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701503659] [2020-10-28 08:42:36,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:36,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:42:36,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533709618] [2020-10-28 08:42:36,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:42:36,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:36,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:42:36,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:36,823 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-28 08:42:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:37,016 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2020-10-28 08:42:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:42:37,016 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-28 08:42:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:37,017 INFO L225 Difference]: With dead ends: 148 [2020-10-28 08:42:37,017 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 08:42:37,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:37,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 08:42:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-28 08:42:37,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 08:42:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-28 08:42:37,024 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 148 [2020-10-28 08:42:37,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:37,024 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-28 08:42:37,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:42:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-28 08:42:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 08:42:37,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:37,026 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 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] [2020-10-28 08:42:37,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 08:42:37,026 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:37,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:37,027 INFO L82 PathProgramCache]: Analyzing trace with hash 628795297, now seen corresponding path program 28 times [2020-10-28 08:42:37,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:37,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771283212] [2020-10-28 08:42:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:37,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:37,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:37,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:42,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:42,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 08:42:42,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:42,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 08:42:42,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:42,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:42,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:42,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:42,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:42,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:42,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:42,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:42,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:42,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:42,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:42:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:42,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:42,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:42,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:42,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:42,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 08:42:42,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:42,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:42,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:42,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 08:42:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:42,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:42,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:42,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:42,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:42,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 08:42:42,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:42,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:42,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:42,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 08:42:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:42,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:42,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:42,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:42,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:42,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 08:42:42,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:42,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:42,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:42,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 08:42:42,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771283212] [2020-10-28 08:42:42,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:42,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:42:42,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719888266] [2020-10-28 08:42:42,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:42:42,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:42,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:42:42,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:42,732 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-28 08:42:42,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:42,944 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-28 08:42:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:42:42,945 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-10-28 08:42:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:42,946 INFO L225 Difference]: With dead ends: 150 [2020-10-28 08:42:42,946 INFO L226 Difference]: Without dead ends: 92 [2020-10-28 08:42:42,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:42,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-28 08:42:42,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-28 08:42:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 08:42:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-28 08:42:42,954 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 150 [2020-10-28 08:42:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:42,955 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-28 08:42:42,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:42:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-28 08:42:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 08:42:42,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:42,956 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 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] [2020-10-28 08:42:42,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 08:42:42,956 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:42,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:42,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1237104125, now seen corresponding path program 29 times [2020-10-28 08:42:42,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:42,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153450956] [2020-10-28 08:42:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:43,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:43,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:43,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:48,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:48,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 08:42:48,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:48,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 08:42:48,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:48,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:48,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:42:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 08:42:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:42:48,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:48,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:48,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:48,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:48,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:48,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:48,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:48,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:48,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:42:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:48,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:48,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:48,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:48,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:48,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:48,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 08:42:48,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:48,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:48,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:48,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:42:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:48,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:48,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:48,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:48,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:48,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 08:42:48,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:48,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:48,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:48,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:48,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:48,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:48,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 08:42:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:48,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:48,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:48,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:48,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 08:42:48,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:48,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:48,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-28 08:42:48,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153450956] [2020-10-28 08:42:48,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:48,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:42:48,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836087011] [2020-10-28 08:42:48,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:42:48,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:48,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:42:48,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:42:48,598 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 11 states. [2020-10-28 08:42:48,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:48,708 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-28 08:42:48,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:42:48,709 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-10-28 08:42:48,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:48,710 INFO L225 Difference]: With dead ends: 133 [2020-10-28 08:42:48,710 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 08:42:48,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:42:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 08:42:48,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-28 08:42:48,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 08:42:48,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-28 08:42:48,717 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-28 08:42:48,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:48,718 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-28 08:42:48,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:42:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-28 08:42:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 08:42:48,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:48,719 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 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] [2020-10-28 08:42:48,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 08:42:48,720 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:48,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:48,720 INFO L82 PathProgramCache]: Analyzing trace with hash -7720703, now seen corresponding path program 30 times [2020-10-28 08:42:48,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:48,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130438260] [2020-10-28 08:42:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:48,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:48,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:53,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:53,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 08:42:53,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:53,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 08:42:53,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:53,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:53,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:53,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:54,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:54,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:54,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:42:54,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:54,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:54,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:42:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:54,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:54,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:54,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 08:42:54,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:54,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:54,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:42:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:54,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:54,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:54,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 08:42:54,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:54,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:54,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:54,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 08:42:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:54,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:54,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:54,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:54,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 08:42:54,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:54,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:54,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:54,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:54,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:54,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-28 08:42:54,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130438260] [2020-10-28 08:42:54,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:54,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:42:54,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642600097] [2020-10-28 08:42:54,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:42:54,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:54,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:42:54,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:54,534 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-28 08:42:54,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:54,758 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2020-10-28 08:42:54,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:42:54,758 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-28 08:42:54,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:54,760 INFO L225 Difference]: With dead ends: 156 [2020-10-28 08:42:54,760 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 08:42:54,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:54,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 08:42:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-28 08:42:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 08:42:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-28 08:42:54,768 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-28 08:42:54,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:54,768 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-28 08:42:54,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:42:54,768 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-28 08:42:54,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 08:42:54,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:54,769 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 14, 14, 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] [2020-10-28 08:42:54,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 08:42:54,770 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:54,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:54,770 INFO L82 PathProgramCache]: Analyzing trace with hash -594095517, now seen corresponding path program 31 times [2020-10-28 08:42:54,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:54,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660535800] [2020-10-28 08:42:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:54,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:59,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 08:42:59,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:59,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 08:42:59,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:59,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:59,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:42:59,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:59,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:42:59,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:00,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:00,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:00,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:00,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:00,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:00,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:43:00,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:00,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:00,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:00,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:43:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:00,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:00,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:43:00,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:00,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 08:43:00,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:00,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:00,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:00,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:43:00,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:00,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:00,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 08:43:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:00,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:00,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:00,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:43:00,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:00,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 08:43:00,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:00,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:43:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:00,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:00,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 08:43:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:00,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:00,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:00,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:43:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 08:43:00,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:00,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:00,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:00,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:43:00,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1874 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-28 08:43:00,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660535800] [2020-10-28 08:43:00,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:00,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:43:00,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908327471] [2020-10-28 08:43:00,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:43:00,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:00,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:43:00,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:43:00,506 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 18 states. [2020-10-28 08:43:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:00,649 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2020-10-28 08:43:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:43:00,650 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 156 [2020-10-28 08:43:00,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:00,651 INFO L225 Difference]: With dead ends: 158 [2020-10-28 08:43:00,651 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 08:43:00,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:43:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 08:43:00,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-28 08:43:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 08:43:00,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-28 08:43:00,662 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 156 [2020-10-28 08:43:00,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:00,662 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-28 08:43:00,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:43:00,663 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-28 08:43:00,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 08:43:00,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:00,664 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 15, 15, 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] [2020-10-28 08:43:00,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 08:43:00,664 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:00,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:00,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1459575995, now seen corresponding path program 32 times [2020-10-28 08:43:00,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:00,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920106524] [2020-10-28 08:43:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:00,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:00,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:00,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:00,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:05,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:05,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 08:43:05,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:05,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 08:43:05,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:05,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:05,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:43:05,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 08:43:05,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:43:05,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:05,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:05,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:05,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:05,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:05,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:05,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:05,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:05,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:05,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:05,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:05,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:05,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:05,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:43:05,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 08:43:05,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:05,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:05,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 08:43:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:05,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:05,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:05,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:43:05,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 08:43:05,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:05,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:43:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:43:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:43:05,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:06,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 08:43:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:06,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:06,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:06,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:06,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:43:06,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 08:43:06,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:06,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:43:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:06,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 368 proven. 537 refuted. 0 times theorem prover too weak. 998 trivial. 0 not checked. [2020-10-28 08:43:06,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920106524] [2020-10-28 08:43:06,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:06,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:43:06,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438280136] [2020-10-28 08:43:06,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:43:06,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:06,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:43:06,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:43:06,369 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 17 states. [2020-10-28 08:43:07,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:07,077 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2020-10-28 08:43:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:43:07,077 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 158 [2020-10-28 08:43:07,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:07,078 INFO L225 Difference]: With dead ends: 159 [2020-10-28 08:43:07,078 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 08:43:07,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-28 08:43:07,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 08:43:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-28 08:43:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 08:43:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-28 08:43:07,085 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 158 [2020-10-28 08:43:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:07,086 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-28 08:43:07,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:43:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-28 08:43:07,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 08:43:07,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:07,087 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 15, 15, 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] [2020-10-28 08:43:07,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 08:43:07,088 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:07,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:07,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1744570147, now seen corresponding path program 33 times [2020-10-28 08:43:07,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:07,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601403653] [2020-10-28 08:43:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:07,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:07,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:12,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 08:43:12,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:12,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 08:43:12,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:12,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:43:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 08:43:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:43:12,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:12,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:12,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:12,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:12,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:12,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:12,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:12,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:12,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:12,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:12,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:12,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:12,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:12,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:12,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:43:12,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 08:43:12,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:12,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:43:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:43:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:43:12,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:12,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 08:43:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:12,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:43:12,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:12,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 08:43:12,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:12,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 08:43:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:12,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:12,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 08:43:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:12,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:43:12,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:12,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 08:43:12,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:12,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 08:43:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2020-10-28 08:43:13,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601403653] [2020-10-28 08:43:13,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:13,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:43:13,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278547712] [2020-10-28 08:43:13,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:43:13,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:13,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:43:13,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:43:13,018 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-28 08:43:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:13,749 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-10-28 08:43:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:43:13,749 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-10-28 08:43:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:13,750 INFO L225 Difference]: With dead ends: 163 [2020-10-28 08:43:13,750 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 08:43:13,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 08:43:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 08:43:13,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-28 08:43:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 08:43:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-28 08:43:13,757 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 164 [2020-10-28 08:43:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:13,758 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-28 08:43:13,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:43:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-28 08:43:13,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 08:43:13,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:13,759 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 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] [2020-10-28 08:43:13,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 08:43:13,759 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:13,760 INFO L82 PathProgramCache]: Analyzing trace with hash -781693823, now seen corresponding path program 34 times [2020-10-28 08:43:13,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:13,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200023400] [2020-10-28 08:43:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:13,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:13,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:13,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:13,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:18,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 08:43:18,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:43:18,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:18,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:43:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-28 08:43:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:43:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:18,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:18,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:18,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:18,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:18,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:43:18,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:18,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:18,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:18,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:18,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:19,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:19,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:19,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 08:43:19,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:19,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:19,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:19,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:19,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:19,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:19,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 08:43:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:19,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:19,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:19,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:19,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 08:43:19,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:19,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:19,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:19,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:19,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:19,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:19,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 08:43:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:19,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:19,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 08:43:19,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:19,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-28 08:43:19,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200023400] [2020-10-28 08:43:19,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:19,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:43:19,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008229968] [2020-10-28 08:43:19,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:43:19,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:19,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:43:19,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:43:19,518 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 12 states. [2020-10-28 08:43:19,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:19,625 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-28 08:43:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:43:19,625 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-10-28 08:43:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:19,626 INFO L225 Difference]: With dead ends: 147 [2020-10-28 08:43:19,626 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 08:43:19,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:43:19,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 08:43:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-28 08:43:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 08:43:19,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-28 08:43:19,633 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-28 08:43:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:19,633 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-28 08:43:19,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:43:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-28 08:43:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 08:43:19,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:19,635 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 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] [2020-10-28 08:43:19,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 08:43:19,635 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:19,635 INFO L82 PathProgramCache]: Analyzing trace with hash 433953791, now seen corresponding path program 35 times [2020-10-28 08:43:19,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:19,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232856570] [2020-10-28 08:43:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:19,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:24,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:24,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 08:43:24,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:24,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 08:43:24,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:24,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:24,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:43:24,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:43:24,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:43:24,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:24,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:24,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:24,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:24,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:24,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:43:24,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:24,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:24,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:24,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:24,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:24,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:24,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:24,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:24,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:25,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:25,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:25,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 08:43:25,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:25,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:25,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:25,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:25,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:25,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 08:43:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:25,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:25,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:25,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:25,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 08:43:25,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:25,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:25,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:25,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 08:43:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:25,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:25,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:25,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:25,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 08:43:25,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:25,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2436 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2211 trivial. 0 not checked. [2020-10-28 08:43:25,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232856570] [2020-10-28 08:43:25,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:25,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:43:25,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079937435] [2020-10-28 08:43:25,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:43:25,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:25,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:43:25,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:43:25,589 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 19 states. [2020-10-28 08:43:25,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:25,831 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2020-10-28 08:43:25,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:43:25,832 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 172 [2020-10-28 08:43:25,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:25,833 INFO L225 Difference]: With dead ends: 172 [2020-10-28 08:43:25,834 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 08:43:25,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:43:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 08:43:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-28 08:43:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 08:43:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-28 08:43:25,841 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-28 08:43:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:25,841 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-28 08:43:25,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:43:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-28 08:43:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 08:43:25,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:25,843 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 16, 16, 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] [2020-10-28 08:43:25,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 08:43:25,843 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:25,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:25,844 INFO L82 PathProgramCache]: Analyzing trace with hash 782067937, now seen corresponding path program 36 times [2020-10-28 08:43:25,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:25,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073859539] [2020-10-28 08:43:25,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:30,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:30,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 08:43:30,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:30,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 08:43:30,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:30,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:30,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:43:30,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 08:43:30,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:43:30,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:30,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:30,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:30,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:30,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:30,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:30,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:30,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:30,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:30,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:43:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:31,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:31,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:31,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:31,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 08:43:31,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:31,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:31,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:43:31,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:43:31,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:43:31,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:31,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 08:43:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:31,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:31,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:31,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:31,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-28 08:43:31,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:31,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:31,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:31,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 08:43:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:31,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:31,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:31,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:31,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:31,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 08:43:31,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:31,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2467 backedges. 0 proven. 1193 refuted. 0 times theorem prover too weak. 1274 trivial. 0 not checked. [2020-10-28 08:43:31,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073859539] [2020-10-28 08:43:31,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:31,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:43:31,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160876236] [2020-10-28 08:43:31,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:43:31,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:31,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:43:31,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:43:31,855 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-28 08:43:32,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:32,740 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2020-10-28 08:43:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:43:32,741 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-10-28 08:43:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:32,742 INFO L225 Difference]: With dead ends: 173 [2020-10-28 08:43:32,742 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 08:43:32,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 08:43:32,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 08:43:32,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-28 08:43:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 08:43:32,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-28 08:43:32,750 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 174 [2020-10-28 08:43:32,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:32,750 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-28 08:43:32,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:43:32,751 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-28 08:43:32,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 08:43:32,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:32,752 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 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] [2020-10-28 08:43:32,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 08:43:32,752 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:32,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:32,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1999341247, now seen corresponding path program 37 times [2020-10-28 08:43:32,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:32,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683149633] [2020-10-28 08:43:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:32,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:32,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking...