/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_break.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:43:47,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:43:47,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:43:47,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:43:47,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:43:47,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:43:47,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:43:47,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:43:47,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:43:47,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:43:47,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:43:47,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:43:47,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:43:47,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:43:47,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:43:47,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:43:47,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:43:47,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:43:47,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:43:47,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:43:47,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:43:47,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:43:47,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:43:47,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:43:47,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:43:47,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:43:47,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:43:47,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:43:47,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:43:47,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:43:47,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:43:47,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:43:47,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:43:47,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:43:47,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:43:47,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:43:47,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:43:47,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:43:47,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:43:47,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:43:47,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:43:47,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:43:47,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:43:47,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:43:47,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:43:47,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:43:47,494 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:43:47,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:43:47,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:43:47,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:43:47,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:43:47,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:43:47,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:43:47,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:43:47,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:43:47,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:43:47,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:43:47,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:43:47,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:43:47,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:43:47,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:43:47,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:43:47,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:43:47,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:43:47,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:43:47,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:43:47,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:43:47,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:43:47,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:43:47,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:43:47,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:43:47,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:43:47,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:43:47,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:43:47,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:43:47,935 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:43:47,937 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:43:47,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_break.i [2020-10-27 14:43:48,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c5c636a9/4890fc6042d34d83861be5b1ceca99a5/FLAGbdfae0d98 [2020-10-27 14:43:48,682 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:43:48,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_break.i [2020-10-27 14:43:48,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c5c636a9/4890fc6042d34d83861be5b1ceca99a5/FLAGbdfae0d98 [2020-10-27 14:43:48,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c5c636a9/4890fc6042d34d83861be5b1ceca99a5 [2020-10-27 14:43:48,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:43:48,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:43:48,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:43:48,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:43:48,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:43:48,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:43:48" (1/1) ... [2020-10-27 14:43:49,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0b85a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:43:48, skipping insertion in model container [2020-10-27 14:43:49,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:43:48" (1/1) ... [2020-10-27 14:43:49,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:43:49,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:43:49,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:43:51,096 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:43:51,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:43:51,178 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:43:51,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:43:51 WrapperNode [2020-10-27 14:43:51,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:43:51,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:43:51,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:43:51,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:43:51,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:43:51" (1/1) ... [2020-10-27 14:43:51,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:43:51" (1/1) ... [2020-10-27 14:43:51,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:43:51" (1/1) ... [2020-10-27 14:43:51,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:43:51" (1/1) ... [2020-10-27 14:43:51,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:43:51" (1/1) ... [2020-10-27 14:43:51,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:43:51" (1/1) ... [2020-10-27 14:43:51,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:43:51" (1/1) ... [2020-10-27 14:43:51,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:43:51,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:43:51,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:43:51,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:43:51,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:43:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:43:51,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:43:51,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:43:51,466 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:43:51,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:43:51,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:43:51,477 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:43:51,477 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:43:51,477 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:43:51,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:43:51,478 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:43:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:43:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:43:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:43:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:43:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:43:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:43:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:43:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:43:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:43:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:43:52,160 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:43:52,161 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:43:52,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:43:52 BoogieIcfgContainer [2020-10-27 14:43:52,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:43:52,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:43:52,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:43:52,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:43:52,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:43:48" (1/3) ... [2020-10-27 14:43:52,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b403fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:43:52, skipping insertion in model container [2020-10-27 14:43:52,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:43:51" (2/3) ... [2020-10-27 14:43:52,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b403fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:43:52, skipping insertion in model container [2020-10-27 14:43:52,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:43:52" (3/3) ... [2020-10-27 14:43:52,174 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_break.i [2020-10-27 14:43:52,188 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:43:52,195 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:43:52,212 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:43:52,244 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:43:52,245 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:43:52,245 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:43:52,245 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:43:52,245 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:43:52,245 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:43:52,246 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:43:52,246 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:43:52,266 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-27 14:43:52,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 14:43:52,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:43:52,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:43:52,274 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:43:52,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:43:52,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1575655028, now seen corresponding path program 1 times [2020-10-27 14:43:52,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:43:52,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399908991] [2020-10-27 14:43:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:43:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:52,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:52,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:52,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:43:52,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:43:52,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 14:43:52,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:43:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:43:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:43:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 14:43:52,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:43:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:52,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:52,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:52,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:43:52,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:43:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 14:43:52,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:43:52,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:43:52,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:43:52,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:43:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:43:52,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399908991] [2020-10-27 14:43:52,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:43:52,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:43:52,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768766676] [2020-10-27 14:43:52,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:43:52,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:43:52,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:43:52,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:43:52,926 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-27 14:43:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:43:53,041 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2020-10-27 14:43:53,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:43:53,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-27 14:43:53,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:43:53,053 INFO L225 Difference]: With dead ends: 61 [2020-10-27 14:43:53,053 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 14:43:53,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:43:53,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 14:43:53,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-10-27 14:43:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 14:43:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-27 14:43:53,106 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2020-10-27 14:43:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:43:53,107 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-27 14:43:53,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:43:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-27 14:43:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 14:43:53,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:43:53,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:43:53,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:43:53,109 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:43:53,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:43:53,110 INFO L82 PathProgramCache]: Analyzing trace with hash 585993527, now seen corresponding path program 1 times [2020-10-27 14:43:53,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:43:53,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270383211] [2020-10-27 14:43:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:43:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:53,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:53,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:53,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:43:53,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:43:53,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 14:43:53,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:43:53,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:43:53,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:43:53,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:43:53,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:43:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:53,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:53,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:53,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:43:53,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:43:53,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 14:43:53,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:53,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:43:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:43:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:43:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:43:53,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:43:53,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270383211] [2020-10-27 14:43:53,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:43:53,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:43:53,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362258021] [2020-10-27 14:43:53,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:43:53,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:43:53,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:43:53,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:43:53,344 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-10-27 14:43:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:43:53,589 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-10-27 14:43:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:43:53,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-27 14:43:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:43:53,591 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:43:53,591 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:43:53,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:43:53,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:43:53,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 24. [2020-10-27 14:43:53,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-27 14:43:53,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-27 14:43:53,603 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2020-10-27 14:43:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:43:53,603 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-27 14:43:53,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:43:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-27 14:43:53,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 14:43:53,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:43:53,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:43:53,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:43:53,605 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:43:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:43:53,606 INFO L82 PathProgramCache]: Analyzing trace with hash 836905597, now seen corresponding path program 1 times [2020-10-27 14:43:53,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:43:53,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509672874] [2020-10-27 14:43:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:43:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:53,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:53,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:53,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 14:43:53,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:43:53,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 14:43:53,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:53,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:43:53,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:43:53,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:43:53,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:43:54,030 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-27 14:43:54,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:43:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:54,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:54,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:54,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:43:54,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:43:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 14:43:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:43:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:43:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:43:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:43:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:43:54,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509672874] [2020-10-27 14:43:54,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:43:54,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:43:54,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723404809] [2020-10-27 14:43:54,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:43:54,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:43:54,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:43:54,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:43:54,075 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2020-10-27 14:43:54,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:43:54,364 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-10-27 14:43:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:43:54,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-27 14:43:54,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:43:54,366 INFO L225 Difference]: With dead ends: 46 [2020-10-27 14:43:54,366 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 14:43:54,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:43:54,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 14:43:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-27 14:43:54,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-27 14:43:54,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-27 14:43:54,374 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 17 [2020-10-27 14:43:54,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:43:54,375 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-27 14:43:54,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:43:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-27 14:43:54,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 14:43:54,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:43:54,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:43:54,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:43:54,376 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:43:54,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:43:54,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1977759324, now seen corresponding path program 1 times [2020-10-27 14:43:54,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:43:54,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440203759] [2020-10-27 14:43:54,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:43:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:54,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:54,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:54,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 14:43:54,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:43:54,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-27 14:43:54,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:54,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:43:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:43:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:43:54,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:43:54,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:43:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:54,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:54,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:43:54,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:43:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:43:54,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:43:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:43:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:43:54,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:43:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:43:54,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440203759] [2020-10-27 14:43:54,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:43:54,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:43:54,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264304678] [2020-10-27 14:43:54,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:43:54,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:43:54,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:43:54,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:43:54,966 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-10-27 14:43:55,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:43:55,139 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-27 14:43:55,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:43:55,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-27 14:43:55,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:43:55,141 INFO L225 Difference]: With dead ends: 53 [2020-10-27 14:43:55,141 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 14:43:55,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:43:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 14:43:55,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2020-10-27 14:43:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 14:43:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-27 14:43:55,149 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-10-27 14:43:55,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:43:55,150 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-27 14:43:55,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:43:55,150 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-27 14:43:55,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:43:55,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:43:55,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:43:55,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:43:55,152 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:43:55,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:43:55,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1335518697, now seen corresponding path program 2 times [2020-10-27 14:43:55,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:43:55,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767461172] [2020-10-27 14:43:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:43:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:55,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:55,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:55,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:55,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:43:55,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:43:55,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-27 14:43:55,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:43:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:43:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:43:55,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:43:55,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:43:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:55,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:55,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:55,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:43:55,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:43:55,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:43:55,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:55,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:43:55,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:43:55,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:43:55,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:43:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:43:55,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767461172] [2020-10-27 14:43:55,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:43:55,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:43:55,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062646864] [2020-10-27 14:43:55,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:43:55,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:43:55,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:43:55,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:43:55,765 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 9 states. [2020-10-27 14:43:56,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:43:56,131 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-27 14:43:56,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:43:56,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-27 14:43:56,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:43:56,133 INFO L225 Difference]: With dead ends: 40 [2020-10-27 14:43:56,133 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:43:56,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:43:56,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:43:56,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 14:43:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:43:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-10-27 14:43:56,141 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 22 [2020-10-27 14:43:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:43:56,142 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-10-27 14:43:56,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:43:56,142 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-10-27 14:43:56,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 14:43:56,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:43:56,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:43:56,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:43:56,144 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:43:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:43:56,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1214224133, now seen corresponding path program 1 times [2020-10-27 14:43:56,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:43:56,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470933616] [2020-10-27 14:43:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:43:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:56,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:56,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:56,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:57,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:57,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 14:43:57,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:43:57,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 945 [2020-10-27 14:43:57,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:43:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:43:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 14:43:57,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:43:57,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:43:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:57,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:57,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:43:57,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:43:57,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:43:57,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:43:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:43:57,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:43:57,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:43:57,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 14:43:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:57,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:43:57,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:43:57,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:43:57,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:43:57,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:43:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:43:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:43:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:43:57,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:43:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:43:57,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470933616] [2020-10-27 14:43:57,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:43:57,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:43:57,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403656997] [2020-10-27 14:43:57,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:43:57,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:43:57,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:43:57,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:43:57,277 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2020-10-27 14:43:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:43:57,813 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-10-27 14:43:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:43:57,813 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-27 14:43:57,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:43:57,815 INFO L225 Difference]: With dead ends: 51 [2020-10-27 14:43:57,815 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 14:43:57,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:43:57,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 14:43:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-10-27 14:43:57,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 14:43:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-10-27 14:43:57,824 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 31 [2020-10-27 14:43:57,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:43:57,825 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-10-27 14:43:57,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:43:57,825 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-10-27 14:43:57,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:43:57,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:43:57,826 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:43:57,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:43:57,827 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:43:57,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:43:57,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2639319, now seen corresponding path program 2 times [2020-10-27 14:43:57,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:43:57,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235358764] [2020-10-27 14:43:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:43:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:43:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:57,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:58,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:58,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:43:59,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:01,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:01,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:44:01,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:44:01,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3698 [2020-10-27 14:44:01,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:44:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:44:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:44:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:01,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:01,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:01,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:01,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:01,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:01,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:44:01,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:01,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:01,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:01,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 14:44:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:01,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:01,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:01,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:01,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:01,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:44:01,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:01,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:01,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:01,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:01,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:44:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:01,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:01,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:01,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:01,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:01,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:01,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:01,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:44:01,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235358764] [2020-10-27 14:44:01,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:01,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:44:01,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340824566] [2020-10-27 14:44:01,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:44:01,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:01,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:44:01,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:44:01,644 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 6 states. [2020-10-27 14:44:01,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:01,845 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2020-10-27 14:44:01,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:44:01,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-27 14:44:01,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:01,847 INFO L225 Difference]: With dead ends: 85 [2020-10-27 14:44:01,847 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 14:44:01,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:44:01,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 14:44:01,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2020-10-27 14:44:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 14:44:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-10-27 14:44:01,868 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 40 [2020-10-27 14:44:01,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:01,870 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-10-27 14:44:01,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:44:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-10-27 14:44:01,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 14:44:01,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:01,873 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:44:01,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:44:01,875 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:01,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:01,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1911900996, now seen corresponding path program 3 times [2020-10-27 14:44:01,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:01,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311357993] [2020-10-27 14:44:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:01,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:01,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:02,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:02,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:03,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:03,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:03,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:06,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:06,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 14:44:06,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:44:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:44:06,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:44:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:44:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 14:44:06,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:07,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:07,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:07,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:07,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:07,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:44:07,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:07,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 14:44:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:07,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:07,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:07,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:07,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:07,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:44:07,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:44:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:44:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:07,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:44:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:07,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:07,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:07,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:44:07,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:44:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:44:07,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:44:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:44:07,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311357993] [2020-10-27 14:44:07,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:07,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:44:07,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220640340] [2020-10-27 14:44:07,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:44:07,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:07,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:44:07,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:44:07,176 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 13 states. [2020-10-27 14:44:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:07,911 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-10-27 14:44:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:44:07,912 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-27 14:44:07,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:07,914 INFO L225 Difference]: With dead ends: 63 [2020-10-27 14:44:07,914 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 14:44:07,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:44:07,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 14:44:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2020-10-27 14:44:07,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-27 14:44:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-10-27 14:44:07,924 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 43 [2020-10-27 14:44:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:07,924 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-10-27 14:44:07,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:44:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-10-27 14:44:07,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 14:44:07,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:07,926 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:44:07,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:44:07,926 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:07,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:07,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1882199944, now seen corresponding path program 4 times [2020-10-27 14:44:07,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:07,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552512829] [2020-10-27 14:44:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:07,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:08,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:08,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:08,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:10,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:10,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:10,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:10,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:10,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:11,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:11,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:12,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:12,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:12,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:44:12,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 14:44:12,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 14:44:12,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:12,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:44:12,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:44:12,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 14:44:12,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:13,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:13,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:13,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:13,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:13,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:13,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:44:13,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:13,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:44:13,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 14:44:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:13,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:13,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:13,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:13,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:13,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:13,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:13,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:44:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:13,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:13,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:13,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:13,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:13,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:13,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:13,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:13,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:13,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:44:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:13,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:13,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:13,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:13,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:13,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:13,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:44:13,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552512829] [2020-10-27 14:44:13,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:13,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:44:13,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570830330] [2020-10-27 14:44:13,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:44:13,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:13,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:44:13,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:44:13,068 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 7 states. [2020-10-27 14:44:13,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:13,242 INFO L93 Difference]: Finished difference Result 106 states and 109 transitions. [2020-10-27 14:44:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:44:13,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-27 14:44:13,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:13,244 INFO L225 Difference]: With dead ends: 106 [2020-10-27 14:44:13,244 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 14:44:13,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:44:13,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 14:44:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2020-10-27 14:44:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 14:44:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-10-27 14:44:13,270 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 52 [2020-10-27 14:44:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:13,270 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-10-27 14:44:13,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:44:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-10-27 14:44:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 14:44:13,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:13,272 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:44:13,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:44:13,272 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:13,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:13,272 INFO L82 PathProgramCache]: Analyzing trace with hash -754503067, now seen corresponding path program 5 times [2020-10-27 14:44:13,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:13,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705724398] [2020-10-27 14:44:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:13,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:13,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:13,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:13,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:14,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:14,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:15,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:15,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:16,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:16,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:16,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:16,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:16,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:18,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:18,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 14:44:18,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 14:44:18,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:44:18,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:44:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:44:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:44:18,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:18,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:18,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:18,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:18,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:18,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:18,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:44:18,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:18,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:18,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:18,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:18,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:18,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:44:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:18,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:18,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:18,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:18,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:18,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:18,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:18,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:18,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:44:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:18,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:18,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:18,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:18,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:18,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:18,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:18,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:18,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:18,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:44:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:18,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:18,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:18,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:18,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:18,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:44:18,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:18,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:44:18,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705724398] [2020-10-27 14:44:18,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:18,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:44:18,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701717293] [2020-10-27 14:44:18,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:44:18,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:18,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:44:18,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:44:18,441 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 8 states. [2020-10-27 14:44:18,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:18,656 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2020-10-27 14:44:18,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:44:18,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-27 14:44:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:18,659 INFO L225 Difference]: With dead ends: 114 [2020-10-27 14:44:18,659 INFO L226 Difference]: Without dead ends: 75 [2020-10-27 14:44:18,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:44:18,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-27 14:44:18,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-10-27 14:44:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 14:44:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-10-27 14:44:18,682 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 55 [2020-10-27 14:44:18,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:18,685 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-10-27 14:44:18,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:44:18,685 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-10-27 14:44:18,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 14:44:18,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:18,687 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:44:18,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:44:18,689 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:18,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:18,690 INFO L82 PathProgramCache]: Analyzing trace with hash -771029672, now seen corresponding path program 6 times [2020-10-27 14:44:18,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:18,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910573204] [2020-10-27 14:44:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:18,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:18,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:18,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:18,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:19,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:19,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:20,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:20,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:21,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:21,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:21,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:22,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:22,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:22,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:23,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:23,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 14:44:23,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 14:44:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:44:23,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:44:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:44:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:44:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:23,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:23,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:23,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:23,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:23,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:44:23,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:23,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:23,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:44:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:23,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:23,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:23,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:23,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:23,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:44:23,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:44:23,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:44:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:23,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:23,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:23,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:23,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:23,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:44:23,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:23,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:23,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:23,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:23,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:44:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:23,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:23,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:23,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:23,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:23,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:23,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:23,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:23,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:23,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:23,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:44:23,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910573204] [2020-10-27 14:44:23,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:23,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:44:23,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148899051] [2020-10-27 14:44:23,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:44:23,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:23,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:44:23,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:44:23,867 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 9 states. [2020-10-27 14:44:24,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:24,088 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2020-10-27 14:44:24,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:44:24,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-27 14:44:24,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:24,092 INFO L225 Difference]: With dead ends: 122 [2020-10-27 14:44:24,093 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 14:44:24,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:44:24,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 14:44:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2020-10-27 14:44:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:44:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2020-10-27 14:44:24,104 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 58 [2020-10-27 14:44:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:24,105 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2020-10-27 14:44:24,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:44:24,105 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2020-10-27 14:44:24,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 14:44:24,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:24,106 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:44:24,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:44:24,107 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:24,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:24,107 INFO L82 PathProgramCache]: Analyzing trace with hash 806119813, now seen corresponding path program 7 times [2020-10-27 14:44:24,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:24,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035980045] [2020-10-27 14:44:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:24,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:24,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:24,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:26,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:26,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:29,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:29,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 14:44:29,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 14:44:29,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:44:29,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:44:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:44:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:44:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:29,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:29,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:29,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:29,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:29,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:29,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:44:29,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:29,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:29,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:44:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:29,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:29,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:29,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:29,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:29,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:29,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:29,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:29,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:44:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:29,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:29,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:29,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:29,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:29,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:29,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:44:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:29,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:29,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:29,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:29,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:29,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:29,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:29,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:44:29,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035980045] [2020-10-27 14:44:29,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:29,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:44:29,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346022600] [2020-10-27 14:44:29,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:44:29,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:29,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:44:29,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:44:29,282 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 10 states. [2020-10-27 14:44:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:29,559 INFO L93 Difference]: Finished difference Result 130 states and 136 transitions. [2020-10-27 14:44:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:44:29,560 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-10-27 14:44:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:29,561 INFO L225 Difference]: With dead ends: 130 [2020-10-27 14:44:29,561 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 14:44:29,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:44:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 14:44:29,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 67. [2020-10-27 14:44:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 14:44:29,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-10-27 14:44:29,569 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 61 [2020-10-27 14:44:29,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:29,569 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-10-27 14:44:29,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:44:29,569 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-10-27 14:44:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:44:29,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:29,570 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:44:29,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:44:29,571 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:29,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:29,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1275790792, now seen corresponding path program 8 times [2020-10-27 14:44:29,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:29,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027383688] [2020-10-27 14:44:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:29,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:29,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:29,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:29,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:30,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:31,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:31,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:32,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:34,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:34,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:34,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 14:44:34,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 14:44:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:44:34,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:44:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:44:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:44:34,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:34,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:34,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:34,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:34,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:34,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:34,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:44:34,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:34,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:34,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:44:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:34,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:34,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:34,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:44:34,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:44:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:44:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:34,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:44:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:34,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:34,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:34,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:34,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:44:34,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:44:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:44:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:34,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:44:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:34,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:34,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:34,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:34,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:44:34,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:44:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:44:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 79 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 14:44:34,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027383688] [2020-10-27 14:44:34,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:34,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:44:34,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113171217] [2020-10-27 14:44:34,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:44:34,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:34,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:44:34,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:44:34,887 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 15 states. [2020-10-27 14:44:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:35,871 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-10-27 14:44:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:44:35,871 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-27 14:44:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:35,873 INFO L225 Difference]: With dead ends: 82 [2020-10-27 14:44:35,873 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:44:35,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:44:35,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:44:35,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-27 14:44:35,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 14:44:35,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2020-10-27 14:44:35,883 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 64 [2020-10-27 14:44:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:35,883 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2020-10-27 14:44:35,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:44:35,883 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2020-10-27 14:44:35,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 14:44:35,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:35,884 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:44:35,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:44:35,885 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:35,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:35,885 INFO L82 PathProgramCache]: Analyzing trace with hash -577516540, now seen corresponding path program 9 times [2020-10-27 14:44:35,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:35,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764836483] [2020-10-27 14:44:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:35,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:36,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:36,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:36,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:37,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:39,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:39,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:40,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:40,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:40,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 14:44:40,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 14:44:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:44:40,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:44:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:44:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 14:44:40,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:41,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:41,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:41,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:41,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:41,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:41,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:44:41,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:41,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:41,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:41,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:41,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:44:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:41,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:41,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:41,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:41,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:41,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:41,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:41,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:41,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:44:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:41,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:41,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:41,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:41,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:41,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:41,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:41,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:41,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:44:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:41,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:41,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:41,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:41,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:41,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:41,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:41,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:41,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:41,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:41,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:44:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:41,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:41,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:41,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:41,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:41,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:41,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:41,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:41,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:44:41,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764836483] [2020-10-27 14:44:41,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:41,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:44:41,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524526671] [2020-10-27 14:44:41,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:44:41,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:41,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:44:41,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:44:41,060 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 11 states. [2020-10-27 14:44:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:41,391 INFO L93 Difference]: Finished difference Result 151 states and 157 transitions. [2020-10-27 14:44:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:44:41,392 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-10-27 14:44:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:41,393 INFO L225 Difference]: With dead ends: 151 [2020-10-27 14:44:41,394 INFO L226 Difference]: Without dead ends: 103 [2020-10-27 14:44:41,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:44:41,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-27 14:44:41,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 79. [2020-10-27 14:44:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 14:44:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-10-27 14:44:41,404 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 73 [2020-10-27 14:44:41,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:41,405 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-10-27 14:44:41,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:44:41,405 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-10-27 14:44:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:44:41,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:41,412 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:44:41,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:44:41,412 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:41,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:41,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1052895287, now seen corresponding path program 10 times [2020-10-27 14:44:41,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:41,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956520487] [2020-10-27 14:44:41,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:41,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:41,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:41,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:44,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:44,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:45,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:45,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:45,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:45,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:46,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:46,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:46,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:46,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 14:44:46,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 14:44:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:44:46,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:44:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:44:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:44:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:46,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:46,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:46,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:46,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:46,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:44:46,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:46,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:44:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:46,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:46,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:46,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:46,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:46,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:46,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:46,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:46,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:46,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:44:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:46,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:46,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:46,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:46,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:46,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:46,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:46,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:46,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:44:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:46,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:46,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:46,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:46,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:44:46,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:46,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:46,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:44:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:46,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:46,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:46,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:46,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:46,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:46,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:46,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:44:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 8 proven. 92 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:44:46,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956520487] [2020-10-27 14:44:46,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:46,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:44:46,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127376447] [2020-10-27 14:44:46,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:44:46,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:46,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:44:46,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:44:46,626 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 12 states. [2020-10-27 14:44:47,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:47,065 INFO L93 Difference]: Finished difference Result 159 states and 166 transitions. [2020-10-27 14:44:47,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:44:47,066 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2020-10-27 14:44:47,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:47,068 INFO L225 Difference]: With dead ends: 159 [2020-10-27 14:44:47,068 INFO L226 Difference]: Without dead ends: 111 [2020-10-27 14:44:47,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:44:47,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-27 14:44:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 82. [2020-10-27 14:44:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 14:44:47,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-10-27 14:44:47,097 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 76 [2020-10-27 14:44:47,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:47,099 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-10-27 14:44:47,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:44:47,099 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-10-27 14:44:47,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 14:44:47,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:47,106 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:44:47,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:44:47,106 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:47,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:47,109 INFO L82 PathProgramCache]: Analyzing trace with hash 866482980, now seen corresponding path program 11 times [2020-10-27 14:44:47,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:47,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079513516] [2020-10-27 14:44:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:47,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:47,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:47,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:48,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:48,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:49,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:49,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:49,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:49,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:49,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:52,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:52,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 14:44:52,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 14:44:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 14:44:52,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:44:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:44:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 14:44:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:52,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:52,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:52,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:52,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:52,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:52,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:44:52,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:44:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:52,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:52,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:52,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:52,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:52,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:52,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:52,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:52,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:52,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:52,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:44:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:52,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:52,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:52,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:52,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:52,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:52,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:52,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:44:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:52,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:52,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:52,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:52,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:52,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:44:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:52,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:52,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:52,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:52,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:52,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:52,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:52,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:52,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:52,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 8 proven. 117 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:44:52,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079513516] [2020-10-27 14:44:52,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:52,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:44:52,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817136173] [2020-10-27 14:44:52,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:44:52,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:52,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:44:52,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:44:52,351 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 13 states. [2020-10-27 14:44:52,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:52,674 INFO L93 Difference]: Finished difference Result 167 states and 175 transitions. [2020-10-27 14:44:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:44:52,675 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 79 [2020-10-27 14:44:52,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:52,677 INFO L225 Difference]: With dead ends: 167 [2020-10-27 14:44:52,677 INFO L226 Difference]: Without dead ends: 119 [2020-10-27 14:44:52,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:44:52,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-27 14:44:52,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 85. [2020-10-27 14:44:52,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 14:44:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2020-10-27 14:44:52,696 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 79 [2020-10-27 14:44:52,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:52,696 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2020-10-27 14:44:52,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:44:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2020-10-27 14:44:52,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:44:52,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:52,697 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:44:52,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:44:52,698 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:52,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:52,698 INFO L82 PathProgramCache]: Analyzing trace with hash 850158871, now seen corresponding path program 12 times [2020-10-27 14:44:52,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:52,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601921275] [2020-10-27 14:44:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:53,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:53,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:53,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:54,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:57,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:57,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 14:44:57,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:44:57,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:44:57,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:57,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:44:57,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:44:57,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:44:57,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:57,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:57,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:57,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:57,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:57,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:44:57,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:57,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:57,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:44:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:57,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:57,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:57,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:57,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:57,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:57,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:57,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:57,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:57,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:57,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:44:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:57,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:57,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:57,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:57,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:57,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:44:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:57,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:57,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:57,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:57,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:57,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:57,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:44:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:57,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:57,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:57,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:57,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:57,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:44:57,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:57,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 8 proven. 145 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:44:57,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601921275] [2020-10-27 14:44:57,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:57,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:44:57,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636720539] [2020-10-27 14:44:57,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:44:57,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:57,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:44:57,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:44:57,914 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 14 states. [2020-10-27 14:44:58,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:58,268 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2020-10-27 14:44:58,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:44:58,269 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 82 [2020-10-27 14:44:58,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:58,270 INFO L225 Difference]: With dead ends: 175 [2020-10-27 14:44:58,270 INFO L226 Difference]: Without dead ends: 127 [2020-10-27 14:44:58,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:44:58,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-27 14:44:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 88. [2020-10-27 14:44:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:44:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-10-27 14:44:58,289 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 82 [2020-10-27 14:44:58,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:58,289 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-10-27 14:44:58,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:44:58,289 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-10-27 14:44:58,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:44:58,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:58,290 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:44:58,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:44:58,290 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:58,291 INFO L82 PathProgramCache]: Analyzing trace with hash -130067900, now seen corresponding path program 13 times [2020-10-27 14:44:58,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:58,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262246494] [2020-10-27 14:44:58,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:58,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:58,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:59,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:00,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:00,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:00,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:03,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:03,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 14:45:03,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:45:03,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:45:03,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:45:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:45:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:45:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:03,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:03,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:03,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:03,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:03,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:03,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:03,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:45:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:03,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:03,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:03,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:03,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:03,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:03,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:03,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:45:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:03,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:03,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:03,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:03,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:03,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:03,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:45:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:03,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:03,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:03,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:03,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:03,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:03,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:03,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:45:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:03,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:03,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:03,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:03,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:03,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:03,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:03,528 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 8 proven. 176 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:45:03,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262246494] [2020-10-27 14:45:03,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:03,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:45:03,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891017688] [2020-10-27 14:45:03,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:45:03,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:03,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:45:03,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:45:03,531 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 15 states. [2020-10-27 14:45:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:03,972 INFO L93 Difference]: Finished difference Result 183 states and 193 transitions. [2020-10-27 14:45:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:45:03,974 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 85 [2020-10-27 14:45:03,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:03,979 INFO L225 Difference]: With dead ends: 183 [2020-10-27 14:45:03,979 INFO L226 Difference]: Without dead ends: 135 [2020-10-27 14:45:03,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:45:03,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-27 14:45:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 91. [2020-10-27 14:45:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 14:45:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-10-27 14:45:03,996 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 85 [2020-10-27 14:45:03,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:03,997 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-10-27 14:45:03,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:45:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-10-27 14:45:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 14:45:03,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:03,998 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:45:03,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:45:03,998 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:03,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:03,998 INFO L82 PathProgramCache]: Analyzing trace with hash -583157257, now seen corresponding path program 14 times [2020-10-27 14:45:03,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:03,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777596141] [2020-10-27 14:45:03,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:04,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:04,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:05,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:05,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:09,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:09,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 14:45:09,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:45:09,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:45:09,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:45:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:45:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:45:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:09,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:09,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:09,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:09,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:09,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:09,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:09,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:09,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:09,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:45:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:09,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:09,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:09,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:09,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:09,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:09,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:45:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:09,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:09,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:09,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:09,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:09,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:09,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:09,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:09,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:45:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:09,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:09,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:09,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:09,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:09,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:09,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:09,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:09,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:45:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:09,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:09,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:09,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:09,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:09,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 8 proven. 210 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:45:09,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777596141] [2020-10-27 14:45:09,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:09,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:45:09,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75828120] [2020-10-27 14:45:09,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:45:09,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:09,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:45:09,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:45:09,254 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 16 states. [2020-10-27 14:45:09,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:09,704 INFO L93 Difference]: Finished difference Result 191 states and 202 transitions. [2020-10-27 14:45:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:45:09,704 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-10-27 14:45:09,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:09,706 INFO L225 Difference]: With dead ends: 191 [2020-10-27 14:45:09,707 INFO L226 Difference]: Without dead ends: 143 [2020-10-27 14:45:09,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=149, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:45:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-27 14:45:09,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 94. [2020-10-27 14:45:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 14:45:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-10-27 14:45:09,727 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 88 [2020-10-27 14:45:09,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:09,727 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-10-27 14:45:09,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:45:09,727 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-10-27 14:45:09,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 14:45:09,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:09,731 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:45:09,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:45:09,731 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:09,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:09,732 INFO L82 PathProgramCache]: Analyzing trace with hash 514019684, now seen corresponding path program 15 times [2020-10-27 14:45:09,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:09,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295224686] [2020-10-27 14:45:09,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:09,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:09,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:10,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:10,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:14,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:14,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 14:45:14,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:45:14,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:45:14,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:14,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:45:14,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:45:14,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 14:45:14,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:14,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:14,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:14,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:14,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:14,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:14,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:14,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:45:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:14,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:14,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:14,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:14,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:14,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:14,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:45:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:14,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:14,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:14,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:14,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:14,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:14,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:14,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:45:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:14,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:14,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:14,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:14,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:14,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:14,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:45:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:14,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:14,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:14,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:14,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:14,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:14,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 8 proven. 247 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:45:15,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295224686] [2020-10-27 14:45:15,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:15,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:45:15,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605857925] [2020-10-27 14:45:15,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:45:15,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:15,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:45:15,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:45:15,008 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 17 states. [2020-10-27 14:45:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:15,440 INFO L93 Difference]: Finished difference Result 199 states and 211 transitions. [2020-10-27 14:45:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:45:15,440 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 91 [2020-10-27 14:45:15,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:15,442 INFO L225 Difference]: With dead ends: 199 [2020-10-27 14:45:15,442 INFO L226 Difference]: Without dead ends: 151 [2020-10-27 14:45:15,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:45:15,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-27 14:45:15,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 97. [2020-10-27 14:45:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-27 14:45:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2020-10-27 14:45:15,461 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 91 [2020-10-27 14:45:15,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:15,462 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2020-10-27 14:45:15,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:45:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2020-10-27 14:45:15,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:45:15,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:15,463 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:45:15,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:45:15,464 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:15,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:15,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1811146455, now seen corresponding path program 16 times [2020-10-27 14:45:15,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:15,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199405466] [2020-10-27 14:45:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:15,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:15,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:15,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:16,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:18,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:18,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:19,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:19,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:19,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:20,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:20,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:20,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:20,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:20,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 14:45:20,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 14:45:20,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 14:45:20,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:20,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:45:20,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:45:20,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:45:20,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:20,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:20,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:20,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:20,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:20,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:20,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:20,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:20,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:20,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:20,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:20,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:20,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:45:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:20,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:20,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:20,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:20,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:20,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:20,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:20,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:20,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:45:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:20,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:20,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:20,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:20,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:20,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:20,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:45:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:20,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:20,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:20,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:20,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:20,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:20,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:20,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:20,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:20,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:20,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:45:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:20,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:20,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:20,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:20,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:20,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:20,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:20,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 8 proven. 287 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:45:20,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199405466] [2020-10-27 14:45:20,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:20,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:45:20,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731675966] [2020-10-27 14:45:20,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:45:20,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:20,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:45:20,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:45:20,832 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 18 states. [2020-10-27 14:45:21,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:21,294 INFO L93 Difference]: Finished difference Result 207 states and 220 transitions. [2020-10-27 14:45:21,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:45:21,294 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2020-10-27 14:45:21,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:21,295 INFO L225 Difference]: With dead ends: 207 [2020-10-27 14:45:21,296 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 14:45:21,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=186, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:45:21,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 14:45:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 100. [2020-10-27 14:45:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:45:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2020-10-27 14:45:21,310 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 94 [2020-10-27 14:45:21,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:21,310 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2020-10-27 14:45:21,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:45:21,310 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2020-10-27 14:45:21,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 14:45:21,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:21,312 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:45:21,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:45:21,313 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:21,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:21,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1600948092, now seen corresponding path program 17 times [2020-10-27 14:45:21,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:21,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125418634] [2020-10-27 14:45:21,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:21,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:21,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:21,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:22,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:22,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:22,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:22,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:23,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:24,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:24,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:26,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:26,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:26,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:26,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 14:45:26,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 14:45:26,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:45:26,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:45:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:45:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 14:45:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:26,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:26,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:26,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:26,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:26,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:26,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:26,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:45:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:26,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:26,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:26,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:26,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:26,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:26,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:26,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:45:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:26,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:26,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:26,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:26,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:26,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:26,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:45:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:26,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:26,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:26,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:26,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:26,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:26,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:26,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:26,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:26,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:45:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:26,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:26,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:26,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:26,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:26,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:26,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:26,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:26,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:26,639 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 8 proven. 330 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:45:26,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125418634] [2020-10-27 14:45:26,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:26,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:45:26,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321693961] [2020-10-27 14:45:26,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:45:26,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:26,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:45:26,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:45:26,641 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand 19 states. [2020-10-27 14:45:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:27,147 INFO L93 Difference]: Finished difference Result 215 states and 229 transitions. [2020-10-27 14:45:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:45:27,151 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 97 [2020-10-27 14:45:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:27,152 INFO L225 Difference]: With dead ends: 215 [2020-10-27 14:45:27,152 INFO L226 Difference]: Without dead ends: 167 [2020-10-27 14:45:27,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=206, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:45:27,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-27 14:45:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 103. [2020-10-27 14:45:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 14:45:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-10-27 14:45:27,168 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 97 [2020-10-27 14:45:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:27,169 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-10-27 14:45:27,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:45:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-10-27 14:45:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:45:27,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:27,170 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:45:27,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:45:27,170 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:27,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:27,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1976363959, now seen corresponding path program 18 times [2020-10-27 14:45:27,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:27,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394860591] [2020-10-27 14:45:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:27,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:27,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:28,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:29,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:29,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:32,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:32,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 14:45:32,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:45:32,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:45:32,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:45:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:45:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 14:45:32,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:32,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:32,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:32,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:32,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:32,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:32,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:32,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:32,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:32,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:32,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:32,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:32,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:45:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:32,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:32,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:32,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:32,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:32,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:32,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:32,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:45:32,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:32,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:45:32,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:45:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:32,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:32,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:32,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:32,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:32,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:32,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:32,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:45:32,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:32,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:45:32,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:32,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:45:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:32,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:32,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:32,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:32,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:32,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:32,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:45:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:45:32,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:32,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:45:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:32,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:32,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:32,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:32,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:32,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:32,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:45:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:45:32,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 8 proven. 231 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-27 14:45:32,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394860591] [2020-10-27 14:45:32,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:32,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:45:32,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554112655] [2020-10-27 14:45:32,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:45:32,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:32,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:45:32,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:45:32,631 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 17 states. [2020-10-27 14:45:33,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:33,790 INFO L93 Difference]: Finished difference Result 118 states and 119 transitions. [2020-10-27 14:45:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:45:33,791 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 100 [2020-10-27 14:45:33,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:33,793 INFO L225 Difference]: With dead ends: 118 [2020-10-27 14:45:33,793 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:45:33,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:45:33,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:45:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-27 14:45:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:45:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2020-10-27 14:45:33,807 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 100 [2020-10-27 14:45:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:33,807 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2020-10-27 14:45:33,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:45:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2020-10-27 14:45:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:45:33,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:33,809 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:45:33,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:45:33,809 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:33,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1853220507, now seen corresponding path program 19 times [2020-10-27 14:45:33,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:33,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299911405] [2020-10-27 14:45:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:33,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:33,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:34,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:34,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:38,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:38,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 14:45:38,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:45:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:45:38,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:45:38,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:45:38,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:45:38,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 14:45:39,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:39,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:39,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:39,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:39,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:39,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:39,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:45:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:39,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:39,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:39,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:39,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:45:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:39,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:39,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:39,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:39,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:39,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:39,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:39,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:39,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:39,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:45:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:39,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:39,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:39,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:39,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:39,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:39,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:39,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:39,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:39,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:39,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:45:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:39,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:39,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:39,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:39,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:39,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:39,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:39,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:45:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:39,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:39,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:39,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:39,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:39,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:39,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 10 proven. 376 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:45:39,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299911405] [2020-10-27 14:45:39,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:39,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:45:39,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020997920] [2020-10-27 14:45:39,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:45:39,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:39,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:45:39,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:45:39,158 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand 20 states. [2020-10-27 14:45:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:39,730 INFO L93 Difference]: Finished difference Result 236 states and 250 transitions. [2020-10-27 14:45:39,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:45:39,730 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 109 [2020-10-27 14:45:39,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:39,732 INFO L225 Difference]: With dead ends: 236 [2020-10-27 14:45:39,733 INFO L226 Difference]: Without dead ends: 179 [2020-10-27 14:45:39,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=227, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:45:39,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-27 14:45:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 115. [2020-10-27 14:45:39,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-27 14:45:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2020-10-27 14:45:39,749 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 109 [2020-10-27 14:45:39,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:39,749 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2020-10-27 14:45:39,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:45:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2020-10-27 14:45:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 14:45:39,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:39,751 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:45:39,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:45:39,751 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:39,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:39,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1186375656, now seen corresponding path program 20 times [2020-10-27 14:45:39,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:39,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706987039] [2020-10-27 14:45:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:40,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:40,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:42,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:44,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:44,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 14:45:44,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:45:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:45:44,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:45:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:45:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 14:45:44,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:45,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:45,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:45,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:45,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:45,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:45:45,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:45,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:45,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:45:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:45,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:45,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:45,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:45,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:45,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:45,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:45:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:45,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:45,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:45,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:45,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:45,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:45,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:45,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:45,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:45:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:45,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:45,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:45,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:45,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:45,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:45,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:45,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:45:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:45,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:45,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:45,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:45,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:45,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:45,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:45,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:45,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:45,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:45,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:45:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:45,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:45,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:45,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:45,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:45,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:45,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:45,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 10 proven. 425 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:45:45,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706987039] [2020-10-27 14:45:45,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:45,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:45:45,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244827186] [2020-10-27 14:45:45,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:45:45,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:45,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:45:45,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:45:45,140 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 21 states. [2020-10-27 14:45:45,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:45,798 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2020-10-27 14:45:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:45:45,799 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 112 [2020-10-27 14:45:45,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:45,800 INFO L225 Difference]: With dead ends: 244 [2020-10-27 14:45:45,801 INFO L226 Difference]: Without dead ends: 187 [2020-10-27 14:45:45,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=249, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:45:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-27 14:45:45,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 118. [2020-10-27 14:45:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-27 14:45:45,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-10-27 14:45:45,815 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 112 [2020-10-27 14:45:45,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:45,815 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-10-27 14:45:45,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:45:45,815 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-10-27 14:45:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 14:45:45,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:45,817 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:45:45,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:45:45,817 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:45,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:45,818 INFO L82 PathProgramCache]: Analyzing trace with hash 564836485, now seen corresponding path program 21 times [2020-10-27 14:45:45,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:45,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655268194] [2020-10-27 14:45:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:45,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:46,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:46,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:48,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:50,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:50,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 14:45:50,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:45:50,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:45:50,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:50,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:45:50,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:45:50,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:45:50,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:51,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:51,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:51,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:51,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:51,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:51,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:45:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:51,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:51,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:51,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:51,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:51,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:51,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:51,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:51,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:45:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:51,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:51,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:51,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:51,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:51,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:51,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:51,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:45:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:51,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:51,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:51,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:51,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:51,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:51,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:51,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:51,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:51,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:51,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:51,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:45:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:51,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:51,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:51,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:51,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:51,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:51,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:51,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:45:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:51,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:51,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:51,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:51,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:51,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:51,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:51,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 10 proven. 477 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:45:51,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655268194] [2020-10-27 14:45:51,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:51,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:45:51,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014604426] [2020-10-27 14:45:51,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:45:51,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:51,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:45:51,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:45:51,231 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 22 states. [2020-10-27 14:45:51,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:51,946 INFO L93 Difference]: Finished difference Result 252 states and 268 transitions. [2020-10-27 14:45:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:45:51,947 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 115 [2020-10-27 14:45:51,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:51,948 INFO L225 Difference]: With dead ends: 252 [2020-10-27 14:45:51,949 INFO L226 Difference]: Without dead ends: 195 [2020-10-27 14:45:51,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:45:51,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-27 14:45:51,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 121. [2020-10-27 14:45:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-27 14:45:51,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2020-10-27 14:45:51,963 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 115 [2020-10-27 14:45:51,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:51,963 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2020-10-27 14:45:51,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:45:51,963 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2020-10-27 14:45:51,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 14:45:51,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:51,965 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:45:51,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:45:51,965 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:51,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:51,966 INFO L82 PathProgramCache]: Analyzing trace with hash -42015496, now seen corresponding path program 22 times [2020-10-27 14:45:51,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:51,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75525880] [2020-10-27 14:45:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:51,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:52,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:53,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:55,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:55,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:56,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:57,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:57,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 14:45:57,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:45:57,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 14:45:57,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:45:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:45:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 14:45:57,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:57,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:57,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:57,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:57,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:57,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:57,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:57,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:57,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:57,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:57,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:57,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:57,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:45:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:57,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:57,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:57,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:57,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:57,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:57,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:57,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:57,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:45:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:57,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:57,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:57,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:57,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:57,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:57,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:57,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:57,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:45:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:57,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:57,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:57,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:57,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:57,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:57,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:57,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:57,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:57,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:45:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:57,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:57,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:57,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:57,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:57,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:57,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:57,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:57,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:57,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:57,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:57,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:45:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:57,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:57,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:57,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:57,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:45:57,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 10 proven. 532 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:45:57,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75525880] [2020-10-27 14:45:57,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:57,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:45:57,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947889688] [2020-10-27 14:45:57,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:45:57,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:57,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:45:57,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:45:57,447 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 23 states. [2020-10-27 14:45:58,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:58,223 INFO L93 Difference]: Finished difference Result 260 states and 277 transitions. [2020-10-27 14:45:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:45:58,223 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 118 [2020-10-27 14:45:58,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:58,226 INFO L225 Difference]: With dead ends: 260 [2020-10-27 14:45:58,226 INFO L226 Difference]: Without dead ends: 203 [2020-10-27 14:45:58,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:45:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-27 14:45:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 124. [2020-10-27 14:45:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:45:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2020-10-27 14:45:58,241 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 118 [2020-10-27 14:45:58,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:58,242 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2020-10-27 14:45:58,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:45:58,242 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2020-10-27 14:45:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 14:45:58,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:58,243 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:45:58,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:45:58,244 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:58,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:58,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1252032603, now seen corresponding path program 23 times [2020-10-27 14:45:58,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:58,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049608805] [2020-10-27 14:45:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:58,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:03,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:03,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 14:46:03,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:46:03,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:46:03,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:03,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:46:03,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:46:03,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:46:03,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:03,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:03,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:03,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:03,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:03,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:03,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:46:03,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:03,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:03,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:46:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:03,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:03,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:03,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:03,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:03,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:03,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:03,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:03,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:03,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:03,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:46:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:03,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:03,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:03,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:03,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:03,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:03,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:03,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:46:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:03,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:03,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:03,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:03,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:03,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:03,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:03,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:03,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:46:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:03,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:03,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:03,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:03,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:03,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:03,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:03,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:03,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:46:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:03,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:03,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:03,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:03,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:03,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 10 proven. 590 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:46:03,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049608805] [2020-10-27 14:46:03,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:03,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:46:03,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384966240] [2020-10-27 14:46:03,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:46:03,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:03,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:46:03,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:46:03,713 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand 24 states. [2020-10-27 14:46:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:04,506 INFO L93 Difference]: Finished difference Result 268 states and 286 transitions. [2020-10-27 14:46:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:46:04,507 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 121 [2020-10-27 14:46:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:04,509 INFO L225 Difference]: With dead ends: 268 [2020-10-27 14:46:04,509 INFO L226 Difference]: Without dead ends: 211 [2020-10-27 14:46:04,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=321, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:46:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-27 14:46:04,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 127. [2020-10-27 14:46:04,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-27 14:46:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2020-10-27 14:46:04,529 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 121 [2020-10-27 14:46:04,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:04,529 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2020-10-27 14:46:04,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:46:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2020-10-27 14:46:04,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:46:04,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:04,531 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:04,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:46:04,531 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:04,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1211151912, now seen corresponding path program 24 times [2020-10-27 14:46:04,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:04,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020490262] [2020-10-27 14:46:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:05,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:08,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:09,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:09,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 14:46:09,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:46:09,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:46:09,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:46:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:46:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 14:46:09,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:10,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:10,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:10,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:10,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:10,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:10,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:46:10,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:10,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:46:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:10,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:10,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:10,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:10,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:10,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:10,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:10,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:10,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:46:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:10,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:10,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:10,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:10,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:10,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:10,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:10,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:10,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:46:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:10,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:10,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:10,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:10,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:10,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:10,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:10,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:46:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:10,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:10,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:10,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:10,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:10,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:10,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:10,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:10,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:46:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:10,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:10,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:10,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:10,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:10,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:10,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:10,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:10,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:10,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 10 proven. 651 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:46:10,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020490262] [2020-10-27 14:46:10,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:10,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:46:10,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618698132] [2020-10-27 14:46:10,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:46:10,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:10,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:46:10,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:46:10,052 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 25 states. [2020-10-27 14:46:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:10,761 INFO L93 Difference]: Finished difference Result 276 states and 295 transitions. [2020-10-27 14:46:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:46:10,762 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 124 [2020-10-27 14:46:10,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:10,764 INFO L225 Difference]: With dead ends: 276 [2020-10-27 14:46:10,764 INFO L226 Difference]: Without dead ends: 219 [2020-10-27 14:46:10,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:46:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-27 14:46:10,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 130. [2020-10-27 14:46:10,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 14:46:10,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2020-10-27 14:46:10,786 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 124 [2020-10-27 14:46:10,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:10,786 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2020-10-27 14:46:10,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:46:10,787 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2020-10-27 14:46:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 14:46:10,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:10,788 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:10,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:46:10,788 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:10,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:10,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1189768901, now seen corresponding path program 25 times [2020-10-27 14:46:10,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:10,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108768207] [2020-10-27 14:46:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:11,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:15,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:15,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:15,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 14:46:15,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:46:15,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:46:15,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:46:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:46:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 14:46:15,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:16,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:16,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:16,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:16,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:16,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:16,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:46:16,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:16,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:16,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:46:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:16,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:16,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:16,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:16,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:16,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:16,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:16,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:46:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:16,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:16,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:16,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:16,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:16,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:16,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:16,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:46:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:16,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:16,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:16,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:16,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:16,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:16,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:16,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:16,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:16,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:46:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:16,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:16,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:16,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:16,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:16,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:16,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 14:46:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:16,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:16,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:16,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:16,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:16,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 10 proven. 715 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:46:16,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108768207] [2020-10-27 14:46:16,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:16,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:46:16,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132490243] [2020-10-27 14:46:16,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:46:16,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:16,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:46:16,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:46:16,327 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 26 states. [2020-10-27 14:46:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:17,062 INFO L93 Difference]: Finished difference Result 284 states and 304 transitions. [2020-10-27 14:46:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:46:17,062 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 127 [2020-10-27 14:46:17,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:17,065 INFO L225 Difference]: With dead ends: 284 [2020-10-27 14:46:17,065 INFO L226 Difference]: Without dead ends: 227 [2020-10-27 14:46:17,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=374, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:46:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-27 14:46:17,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 133. [2020-10-27 14:46:17,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-27 14:46:17,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2020-10-27 14:46:17,082 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 127 [2020-10-27 14:46:17,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:17,082 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2020-10-27 14:46:17,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:46:17,082 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2020-10-27 14:46:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 14:46:17,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:17,084 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:17,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:46:17,084 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:17,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:17,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1363638600, now seen corresponding path program 26 times [2020-10-27 14:46:17,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:17,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803840463] [2020-10-27 14:46:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:17,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:17,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:18,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:22,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:22,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 14:46:22,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:46:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 14:46:22,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:46:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:46:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 14:46:22,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:22,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:22,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:22,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:22,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:46:22,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:22,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:22,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:46:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:22,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:22,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:22,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:22,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:22,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:22,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:22,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:46:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:22,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:22,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:22,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:22,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:22,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:22,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:46:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:22,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:22,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:22,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:22,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:22,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:22,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:22,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:22,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:22,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:46:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:22,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:22,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:22,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:22,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:22,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:22,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:46:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:22,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:22,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:22,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:22,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:22,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 10 proven. 782 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:46:22,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803840463] [2020-10-27 14:46:22,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:22,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:46:22,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558906641] [2020-10-27 14:46:22,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:46:22,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:22,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:46:22,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:46:22,721 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 27 states. [2020-10-27 14:46:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:23,530 INFO L93 Difference]: Finished difference Result 292 states and 313 transitions. [2020-10-27 14:46:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:46:23,531 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 130 [2020-10-27 14:46:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:23,533 INFO L225 Difference]: With dead ends: 292 [2020-10-27 14:46:23,533 INFO L226 Difference]: Without dead ends: 235 [2020-10-27 14:46:23,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=402, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:46:23,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-27 14:46:23,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 136. [2020-10-27 14:46:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 14:46:23,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2020-10-27 14:46:23,551 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 130 [2020-10-27 14:46:23,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:23,552 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2020-10-27 14:46:23,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:46:23,552 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2020-10-27 14:46:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 14:46:23,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:23,553 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:23,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:46:23,553 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:23,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:23,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1760721435, now seen corresponding path program 27 times [2020-10-27 14:46:23,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:23,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707528153] [2020-10-27 14:46:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:23,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:23,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:26,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:28,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:28,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 14:46:28,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:46:28,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:46:28,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:46:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:46:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:46:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:29,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:29,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:29,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:29,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:29,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:29,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:46:29,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:29,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:29,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:29,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:29,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:29,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:46:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:29,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:29,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:29,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:29,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:29,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:46:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:29,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:29,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:29,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:29,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:29,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:29,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:29,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:46:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:29,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:29,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:29,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:29,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:29,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:29,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:29,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:29,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:29,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:29,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:29,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:46:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:29,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:29,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:29,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:29,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:29,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:29,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:29,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 14:46:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:29,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:29,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:29,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:29,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:29,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:29,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:29,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 10 proven. 852 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:46:29,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707528153] [2020-10-27 14:46:29,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:29,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:46:29,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099547528] [2020-10-27 14:46:29,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:46:29,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:29,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:46:29,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:46:29,194 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 28 states. [2020-10-27 14:46:30,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:30,058 INFO L93 Difference]: Finished difference Result 300 states and 322 transitions. [2020-10-27 14:46:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:46:30,059 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 133 [2020-10-27 14:46:30,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:30,061 INFO L225 Difference]: With dead ends: 300 [2020-10-27 14:46:30,061 INFO L226 Difference]: Without dead ends: 243 [2020-10-27 14:46:30,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=431, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:46:30,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-27 14:46:30,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 139. [2020-10-27 14:46:30,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-27 14:46:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2020-10-27 14:46:30,082 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 133 [2020-10-27 14:46:30,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:30,083 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2020-10-27 14:46:30,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:46:30,083 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2020-10-27 14:46:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 14:46:30,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:30,084 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:30,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:46:30,084 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:30,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:30,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1379441560, now seen corresponding path program 28 times [2020-10-27 14:46:30,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:30,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397783935] [2020-10-27 14:46:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:30,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:30,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:33,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:35,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:35,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 14:46:35,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:46:35,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:46:35,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:35,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:46:35,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:46:35,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 14:46:35,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:35,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:35,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:35,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:35,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:46:35,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:35,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:46:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:35,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:35,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:35,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:35,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:35,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:35,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:35,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:35,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:46:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:35,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:35,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:35,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:35,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:35,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:35,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:35,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:35,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:46:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:35,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:35,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:35,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:35,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:35,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:35,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:35,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:35,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 14:46:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:35,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:35,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:35,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:35,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:35,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:35,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:46:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:35,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:35,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:35,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:35,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:35,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:35,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:35,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:35,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:35,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:35,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 10 proven. 925 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:46:35,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397783935] [2020-10-27 14:46:35,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:35,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:46:35,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037822579] [2020-10-27 14:46:35,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:46:35,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:35,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:46:35,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:46:35,743 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 29 states. [2020-10-27 14:46:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:36,813 INFO L93 Difference]: Finished difference Result 308 states and 331 transitions. [2020-10-27 14:46:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:46:36,814 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 136 [2020-10-27 14:46:36,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:36,816 INFO L225 Difference]: With dead ends: 308 [2020-10-27 14:46:36,816 INFO L226 Difference]: Without dead ends: 251 [2020-10-27 14:46:36,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=409, Invalid=461, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:46:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-27 14:46:36,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 142. [2020-10-27 14:46:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-27 14:46:36,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2020-10-27 14:46:36,837 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 136 [2020-10-27 14:46:36,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:36,837 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2020-10-27 14:46:36,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:46:36,837 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2020-10-27 14:46:36,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 14:46:36,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:36,838 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:36,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:46:36,839 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:36,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:36,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1292551429, now seen corresponding path program 29 times [2020-10-27 14:46:36,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:36,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597865409] [2020-10-27 14:46:36,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:37,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:38,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:41,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:42,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:42,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 14:46:42,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:46:42,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5184 [2020-10-27 14:46:42,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:46:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:46:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 14:46:42,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:42,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:42,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:42,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:42,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:46:42,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:42,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:42,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:42,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:42,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:46:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:42,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:42,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:42,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:42,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:42,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:42,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:42,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:42,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:42,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:46:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:42,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:42,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:42,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:42,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:42,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:42,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:46:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:42,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:42,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:42,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:42,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:42,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:42,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:42,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:46:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:42,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:42,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:42,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:42,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:42,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:42,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 14:46:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:42,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:42,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:42,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:42,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:42,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:42,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:42,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1116 backedges. 10 proven. 1001 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:46:42,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597865409] [2020-10-27 14:46:42,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:42,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:46:42,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530054543] [2020-10-27 14:46:42,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:46:42,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:42,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:46:42,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:46:42,804 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 30 states. [2020-10-27 14:46:43,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:43,896 INFO L93 Difference]: Finished difference Result 316 states and 340 transitions. [2020-10-27 14:46:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:46:43,897 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 139 [2020-10-27 14:46:43,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:43,899 INFO L225 Difference]: With dead ends: 316 [2020-10-27 14:46:43,899 INFO L226 Difference]: Without dead ends: 259 [2020-10-27 14:46:43,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=438, Invalid=492, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:46:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-27 14:46:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 145. [2020-10-27 14:46:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 14:46:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2020-10-27 14:46:43,917 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 139 [2020-10-27 14:46:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:43,917 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2020-10-27 14:46:43,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:46:43,917 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2020-10-27 14:46:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 14:46:43,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:43,918 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:43,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:46:43,919 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:43,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:43,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1681029000, now seen corresponding path program 30 times [2020-10-27 14:46:43,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:43,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035865135] [2020-10-27 14:46:43,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:43,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:44,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:44,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:46,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:48,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:48,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 14:46:48,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:46:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:46:48,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:46:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:46:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 14:46:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:49,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:49,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:49,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:49,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:49,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:46:49,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:49,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:46:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:49,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:49,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:49,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:49,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:49,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:49,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:49,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:49,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:49,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:46:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:49,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:49,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:49,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:49,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:49,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:46:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:49,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:49,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:49,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:49,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:49,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 14:46:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:49,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:49,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:49,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:49,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:49,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:49,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:49,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:46:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:49,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:49,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:49,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:49,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:49,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:49,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 10 proven. 1080 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:46:49,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035865135] [2020-10-27 14:46:49,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:49,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:46:49,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351139677] [2020-10-27 14:46:49,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:46:49,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:49,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:46:49,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:46:49,600 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 31 states. [2020-10-27 14:46:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:50,744 INFO L93 Difference]: Finished difference Result 324 states and 349 transitions. [2020-10-27 14:46:50,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:46:50,744 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 142 [2020-10-27 14:46:50,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:50,747 INFO L225 Difference]: With dead ends: 324 [2020-10-27 14:46:50,747 INFO L226 Difference]: Without dead ends: 267 [2020-10-27 14:46:50,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=468, Invalid=524, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:46:50,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-27 14:46:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 148. [2020-10-27 14:46:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-27 14:46:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2020-10-27 14:46:50,768 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 142 [2020-10-27 14:46:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:50,769 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2020-10-27 14:46:50,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:46:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2020-10-27 14:46:50,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 14:46:50,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:50,770 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:50,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:46:50,771 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:50,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:50,771 INFO L82 PathProgramCache]: Analyzing trace with hash 379857957, now seen corresponding path program 31 times [2020-10-27 14:46:50,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:50,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101892395] [2020-10-27 14:46:50,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:50,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:51,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:52,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:53,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:53,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:55,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:55,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:55,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 14:46:55,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:46:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-27 14:46:55,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:46:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:46:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 14:46:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:56,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:56,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:56,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:56,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:56,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:46:56,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:56,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:56,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:46:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:56,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:56,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:56,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:56,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:56,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:56,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:56,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:56,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:46:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:56,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:56,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:56,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:56,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:56,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 14:46:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:56,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:56,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:56,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:56,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:56,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:56,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:56,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:56,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:56,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:56,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:46:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:56,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:56,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:56,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:56,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:56,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:56,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 14:46:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:56,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:56,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:56,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:56,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:46:56,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:56,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1277 backedges. 10 proven. 1162 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:46:56,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101892395] [2020-10-27 14:46:56,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:56,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:46:56,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725628566] [2020-10-27 14:46:56,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:46:56,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:56,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:46:56,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:46:56,610 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 32 states. [2020-10-27 14:46:57,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:57,789 INFO L93 Difference]: Finished difference Result 332 states and 358 transitions. [2020-10-27 14:46:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:46:57,790 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 145 [2020-10-27 14:46:57,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:57,791 INFO L225 Difference]: With dead ends: 332 [2020-10-27 14:46:57,792 INFO L226 Difference]: Without dead ends: 275 [2020-10-27 14:46:57,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=499, Invalid=557, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:46:57,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-27 14:46:57,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 151. [2020-10-27 14:46:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 14:46:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-10-27 14:46:57,811 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 145 [2020-10-27 14:46:57,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:57,811 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-10-27 14:46:57,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:46:57,812 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-10-27 14:46:57,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 14:46:57,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:57,812 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:57,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:46:57,813 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:57,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:57,813 INFO L82 PathProgramCache]: Analyzing trace with hash -294302376, now seen corresponding path program 32 times [2020-10-27 14:46:57,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:57,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481677140] [2020-10-27 14:46:57,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:58,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:59,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:02,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:02,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 14:47:02,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:47:02,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-27 14:47:02,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:47:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:47:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 14:47:02,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:03,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:03,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:03,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:03,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:47:03,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:03,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:47:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:03,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:03,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:03,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:03,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:03,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:03,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:03,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:47:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:03,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:03,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:03,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:03,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:03,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:03,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:03,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:03,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:03,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:47:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:03,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:03,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:03,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:03,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:03,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:03,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:03,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:03,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 14:47:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:03,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:03,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:03,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:03,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:03,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:03,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:03,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:03,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 14:47:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:03,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:03,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:03,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:03,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:03,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:03,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 10 proven. 1247 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:47:03,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481677140] [2020-10-27 14:47:03,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:03,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:47:03,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218582052] [2020-10-27 14:47:03,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:47:03,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:03,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:47:03,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:47:03,740 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 33 states. [2020-10-27 14:47:05,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:05,049 INFO L93 Difference]: Finished difference Result 340 states and 367 transitions. [2020-10-27 14:47:05,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:47:05,050 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 148 [2020-10-27 14:47:05,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:05,052 INFO L225 Difference]: With dead ends: 340 [2020-10-27 14:47:05,052 INFO L226 Difference]: Without dead ends: 283 [2020-10-27 14:47:05,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:47:05,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-27 14:47:05,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 154. [2020-10-27 14:47:05,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 14:47:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2020-10-27 14:47:05,079 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 148 [2020-10-27 14:47:05,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:05,079 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2020-10-27 14:47:05,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:47:05,079 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2020-10-27 14:47:05,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 14:47:05,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:05,081 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:05,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:47:05,081 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:05,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:05,081 INFO L82 PathProgramCache]: Analyzing trace with hash -937706683, now seen corresponding path program 33 times [2020-10-27 14:47:05,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:05,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350910871] [2020-10-27 14:47:05,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:05,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:08,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:09,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:10,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:10,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:10,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 14:47:10,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:47:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5576 [2020-10-27 14:47:10,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:47:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:47:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 14:47:10,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:11,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:11,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:11,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:11,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:11,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:11,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:47:11,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:11,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:11,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:11,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:11,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:47:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:11,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:11,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:11,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:11,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:11,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:11,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:11,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:11,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:11,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:11,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:11,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:47:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:11,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:11,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:11,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:11,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:11,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:11,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:11,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:11,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:11,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:11,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:11,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 14:47:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:11,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:11,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:11,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:11,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:11,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:47:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:11,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:11,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:11,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:11,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:11,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:47:11,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:11,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:11,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:11,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:11,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:11,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 14:47:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:11,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:11,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:11,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:11,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:11,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 10 proven. 1335 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:47:11,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350910871] [2020-10-27 14:47:11,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:11,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:47:11,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118294808] [2020-10-27 14:47:11,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:47:11,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:11,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:47:11,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:47:11,519 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 34 states. [2020-10-27 14:47:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:12,708 INFO L93 Difference]: Finished difference Result 348 states and 376 transitions. [2020-10-27 14:47:12,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:47:12,709 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 151 [2020-10-27 14:47:12,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:12,711 INFO L225 Difference]: With dead ends: 348 [2020-10-27 14:47:12,712 INFO L226 Difference]: Without dead ends: 291 [2020-10-27 14:47:12,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=564, Invalid=626, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:47:12,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-27 14:47:12,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 157. [2020-10-27 14:47:12,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-27 14:47:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2020-10-27 14:47:12,736 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 151 [2020-10-27 14:47:12,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:12,736 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2020-10-27 14:47:12,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:47:12,736 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2020-10-27 14:47:12,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 14:47:12,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:12,737 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:12,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:47:12,738 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:12,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:12,738 INFO L82 PathProgramCache]: Analyzing trace with hash -156374472, now seen corresponding path program 34 times [2020-10-27 14:47:12,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:12,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368998690] [2020-10-27 14:47:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:15,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:16,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:17,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:17,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 14:47:17,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:47:17,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:47:17,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:47:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:47:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 14:47:17,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:18,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:18,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:18,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:18,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:18,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:18,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:47:18,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:18,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:18,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:47:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:18,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:18,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:18,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:18,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:18,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:18,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:18,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:18,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:18,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:18,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:18,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 14:47:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:18,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:18,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:18,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:18,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:18,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:18,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:18,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:18,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:18,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:18,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:18,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:47:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:18,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:18,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:18,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:18,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:18,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:18,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:18,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:18,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:18,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:18,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 14:47:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:18,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:18,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:18,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:18,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:18,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:18,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:18,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:18,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:18,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:18,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:47:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:18,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:18,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:18,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:18,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:18,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:18,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:18,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 10 proven. 1426 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:47:18,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368998690] [2020-10-27 14:47:18,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:18,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 14:47:18,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871490897] [2020-10-27 14:47:18,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 14:47:18,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:18,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 14:47:18,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:47:18,657 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 35 states. [2020-10-27 14:47:20,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:20,189 INFO L93 Difference]: Finished difference Result 356 states and 385 transitions. [2020-10-27 14:47:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:47:20,190 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 154 [2020-10-27 14:47:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:20,192 INFO L225 Difference]: With dead ends: 356 [2020-10-27 14:47:20,192 INFO L226 Difference]: Without dead ends: 299 [2020-10-27 14:47:20,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=598, Invalid=662, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:47:20,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-27 14:47:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 160. [2020-10-27 14:47:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-27 14:47:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2020-10-27 14:47:20,223 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 154 [2020-10-27 14:47:20,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:20,223 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2020-10-27 14:47:20,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 14:47:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2020-10-27 14:47:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 14:47:20,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:20,225 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:20,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 14:47:20,225 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:20,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:20,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2083746405, now seen corresponding path program 35 times [2020-10-27 14:47:20,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:20,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387890087] [2020-10-27 14:47:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:20,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:21,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:22,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:25,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:25,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 14:47:25,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:47:25,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:47:25,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 14:47:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:47:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 14:47:25,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:26,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:26,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:26,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:26,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:26,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:47:26,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:26,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:47:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:26,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:26,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:26,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:26,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:26,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:26,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:26,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:26,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:26,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:26,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:47:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:26,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:26,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:26,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:26,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:26,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:26,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:26,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:26,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:26,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:26,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 14:47:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:26,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:26,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:26,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:26,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:26,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:26,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:26,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 14:47:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:26,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:26,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:26,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:26,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:26,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:26,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:26,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:26,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-27 14:47:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:26,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:26,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:26,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:26,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:26,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1635 backedges. 10 proven. 1520 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:47:26,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387890087] [2020-10-27 14:47:26,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:26,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:47:26,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781169843] [2020-10-27 14:47:26,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:47:26,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:26,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:47:26,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:47:26,176 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand 36 states. [2020-10-27 14:47:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:27,853 INFO L93 Difference]: Finished difference Result 364 states and 394 transitions. [2020-10-27 14:47:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:47:27,854 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 157 [2020-10-27 14:47:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:27,856 INFO L225 Difference]: With dead ends: 364 [2020-10-27 14:47:27,856 INFO L226 Difference]: Without dead ends: 307 [2020-10-27 14:47:27,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=633, Invalid=699, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:47:27,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-27 14:47:27,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 163. [2020-10-27 14:47:27,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-27 14:47:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2020-10-27 14:47:27,885 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 157 [2020-10-27 14:47:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:27,885 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2020-10-27 14:47:27,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:47:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2020-10-27 14:47:27,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 14:47:27,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:27,887 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:27,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 14:47:27,887 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:27,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:27,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1972019432, now seen corresponding path program 36 times [2020-10-27 14:47:27,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:27,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750351712] [2020-10-27 14:47:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:27,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:28,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking...