/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:30:09,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:30:09,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:30:09,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:30:09,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:30:09,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:30:09,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:30:09,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:30:09,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:30:09,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:30:09,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:30:09,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:30:09,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:30:09,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:30:09,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:30:09,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:30:09,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:30:09,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:30:09,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:30:09,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:30:09,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:30:09,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:30:09,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:30:09,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:30:09,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:30:09,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:30:09,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:30:09,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:30:09,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:30:09,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:30:09,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:30:09,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:30:09,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:30:09,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:30:09,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:30:09,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:30:09,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:30:09,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:30:09,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:30:09,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:30:09,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:30:09,730 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 17:30:09,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:30:09,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:30:09,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:30:09,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:30:09,790 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:30:09,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:30:09,791 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:30:09,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:30:09,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:30:09,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:30:09,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:30:09,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:30:09,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:30:09,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:30:09,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:30:09,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:30:09,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:30:09,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:30:09,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:30:09,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:30:09,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:30:09,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:30:09,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:30:09,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:30:09,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:30:09,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:30:09,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:30:09,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:30:09,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:30:09,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:30:10,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:30:10,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:30:10,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:30:10,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:30:10,266 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:30:10,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label11.c [2020-10-27 17:30:10,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1634e1103/6880f18ac9794e798cd8951d9f7d73ef/FLAG9b98d2504 [2020-10-27 17:30:11,260 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:30:11,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label11.c [2020-10-27 17:30:11,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1634e1103/6880f18ac9794e798cd8951d9f7d73ef/FLAG9b98d2504 [2020-10-27 17:30:11,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1634e1103/6880f18ac9794e798cd8951d9f7d73ef [2020-10-27 17:30:11,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:30:11,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:30:11,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:30:11,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:30:11,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:30:11,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:30:11" (1/1) ... [2020-10-27 17:30:11,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225af211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:11, skipping insertion in model container [2020-10-27 17:30:11,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:30:11" (1/1) ... [2020-10-27 17:30:11,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:30:11,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:30:12,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:30:12,074 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:30:12,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:30:12,272 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:30:12,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:12 WrapperNode [2020-10-27 17:30:12,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:30:12,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:30:12,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:30:12,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:30:12,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:12" (1/1) ... [2020-10-27 17:30:12,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:12" (1/1) ... [2020-10-27 17:30:12,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:12" (1/1) ... [2020-10-27 17:30:12,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:12" (1/1) ... [2020-10-27 17:30:12,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:12" (1/1) ... [2020-10-27 17:30:12,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:12" (1/1) ... [2020-10-27 17:30:12,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:12" (1/1) ... [2020-10-27 17:30:12,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:30:12,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:30:12,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:30:12,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:30:12,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:12" (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 17:30:12,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:30:12,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:30:12,593 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:30:12,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:30:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:30:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:30:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:30:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:30:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:30:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:30:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:30:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:30:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:30:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:30:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:30:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:30:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:30:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:30:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:30:14,389 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:30:14,389 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:30:14,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:30:14 BoogieIcfgContainer [2020-10-27 17:30:14,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:30:14,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:30:14,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:30:14,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:30:14,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:30:11" (1/3) ... [2020-10-27 17:30:14,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43200fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:30:14, skipping insertion in model container [2020-10-27 17:30:14,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:12" (2/3) ... [2020-10-27 17:30:14,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43200fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:30:14, skipping insertion in model container [2020-10-27 17:30:14,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:30:14" (3/3) ... [2020-10-27 17:30:14,401 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label11.c [2020-10-27 17:30:14,413 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:30:14,419 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:30:14,433 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:30:14,464 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:30:14,464 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:30:14,464 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:30:14,464 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:30:14,465 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:30:14,465 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:30:14,465 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:30:14,465 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:30:14,490 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-27 17:30:14,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 17:30:14,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:30:14,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:30:14,502 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:30:14,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:30:14,508 INFO L82 PathProgramCache]: Analyzing trace with hash 212567024, now seen corresponding path program 1 times [2020-10-27 17:30:14,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:30:14,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845939724] [2020-10-27 17:30:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:30:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:14,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:15,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:15,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 17:30:15,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:15,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-27 17:30:15,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:30:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:30:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 17:30:15,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:30:15,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:30:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:15,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:15,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:30:15,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:15,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 17:30:15,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:15,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:30:15,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:15,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:30:15,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:30:15,746 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 17:30:15,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845939724] [2020-10-27 17:30:15,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:30:15,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:30:15,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763931221] [2020-10-27 17:30:15,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:30:15,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:30:15,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:30:15,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:30:15,782 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-27 17:30:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:30:18,616 INFO L93 Difference]: Finished difference Result 811 states and 1410 transitions. [2020-10-27 17:30:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:30:18,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-27 17:30:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:30:18,655 INFO L225 Difference]: With dead ends: 811 [2020-10-27 17:30:18,656 INFO L226 Difference]: Without dead ends: 435 [2020-10-27 17:30:18,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:30:18,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-27 17:30:18,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 429. [2020-10-27 17:30:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-27 17:30:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 618 transitions. [2020-10-27 17:30:18,759 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 618 transitions. Word has length 68 [2020-10-27 17:30:18,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:30:18,760 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 618 transitions. [2020-10-27 17:30:18,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:30:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 618 transitions. [2020-10-27 17:30:18,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 17:30:18,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:30:18,767 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:30:18,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:30:18,768 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:30:18,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:30:18,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1769431564, now seen corresponding path program 1 times [2020-10-27 17:30:18,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:30:18,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18988723] [2020-10-27 17:30:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:30:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:18,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:19,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:19,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:20,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:20,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 17:30:20,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:30:20,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2100 [2020-10-27 17:30:20,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:30:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 17:30:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 17:30:20,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:30:21,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:30:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:21,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:21,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:21,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:30:21,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:21,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:30:21,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:30:21,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:21,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:30:21,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:21,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:30:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:21,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:21,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:30:21,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 17:30:21,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:30:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 17:30:21,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:30:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:30:21,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18988723] [2020-10-27 17:30:21,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:30:21,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:30:21,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377243299] [2020-10-27 17:30:21,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:30:21,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:30:21,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:30:21,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:30:21,418 INFO L87 Difference]: Start difference. First operand 429 states and 618 transitions. Second operand 5 states. [2020-10-27 17:30:21,851 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 17:30:23,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:30:23,405 INFO L93 Difference]: Finished difference Result 877 states and 1263 transitions. [2020-10-27 17:30:23,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:30:23,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-27 17:30:23,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:30:23,410 INFO L225 Difference]: With dead ends: 877 [2020-10-27 17:30:23,410 INFO L226 Difference]: Without dead ends: 433 [2020-10-27 17:30:23,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:30:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-27 17:30:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 429. [2020-10-27 17:30:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-27 17:30:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 616 transitions. [2020-10-27 17:30:23,440 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 616 transitions. Word has length 140 [2020-10-27 17:30:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:30:23,440 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 616 transitions. [2020-10-27 17:30:23,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:30:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 616 transitions. [2020-10-27 17:30:23,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 17:30:23,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:30:23,444 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:30:23,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:30:23,444 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:30:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:30:23,445 INFO L82 PathProgramCache]: Analyzing trace with hash 478459052, now seen corresponding path program 1 times [2020-10-27 17:30:23,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:30:23,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190068124] [2020-10-27 17:30:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:30:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:23,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:26,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:26,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 17:30:26,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:30:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3327 [2020-10-27 17:30:26,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:30:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 17:30:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 17:30:26,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:27,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:30:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:27,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:27,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:27,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:30:27,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:27,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:30:27,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:27,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:30:27,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:27,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:30:27,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:27,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:30:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:27,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:27,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:27,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 17:30:27,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:27,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 17:30:27,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:30:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 17:30:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:30:27,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190068124] [2020-10-27 17:30:27,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:30:27,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:30:27,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825942469] [2020-10-27 17:30:27,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:30:27,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:30:27,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:30:27,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:30:27,634 INFO L87 Difference]: Start difference. First operand 429 states and 616 transitions. Second operand 8 states. [2020-10-27 17:30:28,333 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2020-10-27 17:30:28,659 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2020-10-27 17:30:29,241 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2020-10-27 17:30:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:30:31,152 INFO L93 Difference]: Finished difference Result 982 states and 1374 transitions. [2020-10-27 17:30:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 17:30:31,152 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2020-10-27 17:30:31,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:30:31,156 INFO L225 Difference]: With dead ends: 982 [2020-10-27 17:30:31,156 INFO L226 Difference]: Without dead ends: 433 [2020-10-27 17:30:31,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-27 17:30:31,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-27 17:30:31,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 429. [2020-10-27 17:30:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-27 17:30:31,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 609 transitions. [2020-10-27 17:30:31,195 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 609 transitions. Word has length 141 [2020-10-27 17:30:31,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:30:31,196 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 609 transitions. [2020-10-27 17:30:31,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:30:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 609 transitions. [2020-10-27 17:30:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 17:30:31,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:30:31,204 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:30:31,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:30:31,205 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:30:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:30:31,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1944049288, now seen corresponding path program 1 times [2020-10-27 17:30:31,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:30:31,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641371736] [2020-10-27 17:30:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:30:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:31,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:32,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:32,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 17:30:32,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:30:32,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1676 [2020-10-27 17:30:32,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:30:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 17:30:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:30:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:33,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:30:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:33,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:33,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:33,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:30:33,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:33,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 17:30:33,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:30:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:30:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:33,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:30:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:33,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:33,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:33,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:30:33,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:33,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 17:30:33,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:30:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 17:30:33,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:30:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:30:33,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641371736] [2020-10-27 17:30:33,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:30:33,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:30:33,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619032357] [2020-10-27 17:30:33,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:30:33,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:30:33,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:30:33,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:30:33,265 INFO L87 Difference]: Start difference. First operand 429 states and 609 transitions. Second operand 5 states. [2020-10-27 17:30:35,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:30:35,699 INFO L93 Difference]: Finished difference Result 1258 states and 1808 transitions. [2020-10-27 17:30:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:30:35,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-27 17:30:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:30:35,709 INFO L225 Difference]: With dead ends: 1258 [2020-10-27 17:30:35,709 INFO L226 Difference]: Without dead ends: 835 [2020-10-27 17:30:35,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:30:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-10-27 17:30:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 828. [2020-10-27 17:30:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2020-10-27 17:30:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1118 transitions. [2020-10-27 17:30:35,746 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1118 transitions. Word has length 142 [2020-10-27 17:30:35,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:30:35,747 INFO L481 AbstractCegarLoop]: Abstraction has 828 states and 1118 transitions. [2020-10-27 17:30:35,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:30:35,748 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1118 transitions. [2020-10-27 17:30:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 17:30:35,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:30:35,750 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:30:35,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:30:35,751 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:30:35,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:30:35,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1387734140, now seen corresponding path program 1 times [2020-10-27 17:30:35,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:30:35,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710279139] [2020-10-27 17:30:35,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:30:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:35,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:36,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:37,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:37,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 17:30:37,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:30:37,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1813 [2020-10-27 17:30:37,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:30:37,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-27 17:30:37,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 17:30:37,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:30:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:37,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:37,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:37,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:30:37,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:37,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:30:37,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:30:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:30:37,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:37,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:30:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:37,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:37,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 17:30:37,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:37,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 17:30:37,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:37,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:30:37,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:37,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 17:30:37,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:30:38,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710279139] [2020-10-27 17:30:38,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:30:38,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:30:38,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350899005] [2020-10-27 17:30:38,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:30:38,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:30:38,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:30:38,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:30:38,025 INFO L87 Difference]: Start difference. First operand 828 states and 1118 transitions. Second operand 5 states. [2020-10-27 17:30:39,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:30:39,905 INFO L93 Difference]: Finished difference Result 1671 states and 2265 transitions. [2020-10-27 17:30:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:30:39,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-27 17:30:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:30:39,919 INFO L225 Difference]: With dead ends: 1671 [2020-10-27 17:30:39,919 INFO L226 Difference]: Without dead ends: 832 [2020-10-27 17:30:39,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:30:39,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-27 17:30:39,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 828. [2020-10-27 17:30:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2020-10-27 17:30:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1114 transitions. [2020-10-27 17:30:39,963 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1114 transitions. Word has length 165 [2020-10-27 17:30:39,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:30:39,964 INFO L481 AbstractCegarLoop]: Abstraction has 828 states and 1114 transitions. [2020-10-27 17:30:39,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:30:39,964 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1114 transitions. [2020-10-27 17:30:39,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 17:30:39,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:30:39,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:30:39,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:30:39,969 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:30:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:30:39,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1466752814, now seen corresponding path program 1 times [2020-10-27 17:30:39,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:30:39,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776938567] [2020-10-27 17:30:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:30:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:40,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:41,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:41,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 17:30:41,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:30:41,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1936 [2020-10-27 17:30:41,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:30:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-27 17:30:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 17:30:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:42,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:30:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:42,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:42,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:42,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:30:42,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:42,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:30:42,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:30:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:30:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:42,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:30:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:42,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:42,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:42,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:30:42,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:42,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 17:30:42,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:30:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 17:30:42,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:30:42,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776938567] [2020-10-27 17:30:42,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:30:42,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:30:42,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896706893] [2020-10-27 17:30:42,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:30:42,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:30:42,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:30:42,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:30:42,324 INFO L87 Difference]: Start difference. First operand 828 states and 1114 transitions. Second operand 5 states. [2020-10-27 17:30:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:30:44,950 INFO L93 Difference]: Finished difference Result 2038 states and 2821 transitions. [2020-10-27 17:30:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:30:44,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-27 17:30:44,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:30:44,965 INFO L225 Difference]: With dead ends: 2038 [2020-10-27 17:30:44,965 INFO L226 Difference]: Without dead ends: 1216 [2020-10-27 17:30:44,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:30:44,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-10-27 17:30:45,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1210. [2020-10-27 17:30:45,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-10-27 17:30:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1551 transitions. [2020-10-27 17:30:45,011 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1551 transitions. Word has length 170 [2020-10-27 17:30:45,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:30:45,011 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1551 transitions. [2020-10-27 17:30:45,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:30:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1551 transitions. [2020-10-27 17:30:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-27 17:30:45,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:30:45,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:30:45,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:30:45,016 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:30:45,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:30:45,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1434179827, now seen corresponding path program 1 times [2020-10-27 17:30:45,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:30:45,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740175416] [2020-10-27 17:30:45,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:30:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:45,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:45,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:45,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 17:30:45,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-27 17:30:45,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:30:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:30:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 17:30:45,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:45,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:30:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:45,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:45,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:45,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:30:45,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:45,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 17:30:45,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:30:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:30:45,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:30:45,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:30:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:45,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:45,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:30:45,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:45,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 17:30:45,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:30:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:30:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:30:45,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:30:45,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740175416] [2020-10-27 17:30:45,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:30:45,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 17:30:45,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637320634] [2020-10-27 17:30:45,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:30:45,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:30:45,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:30:45,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:30:45,948 INFO L87 Difference]: Start difference. First operand 1210 states and 1551 transitions. Second operand 7 states. [2020-10-27 17:30:49,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:30:49,094 INFO L93 Difference]: Finished difference Result 3053 states and 3963 transitions. [2020-10-27 17:30:49,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:30:49,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-10-27 17:30:49,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:30:49,105 INFO L225 Difference]: With dead ends: 3053 [2020-10-27 17:30:49,105 INFO L226 Difference]: Without dead ends: 1849 [2020-10-27 17:30:49,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:30:49,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2020-10-27 17:30:49,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1825. [2020-10-27 17:30:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2020-10-27 17:30:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2293 transitions. [2020-10-27 17:30:49,174 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2293 transitions. Word has length 182 [2020-10-27 17:30:49,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:30:49,175 INFO L481 AbstractCegarLoop]: Abstraction has 1825 states and 2293 transitions. [2020-10-27 17:30:49,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:30:49,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2293 transitions. [2020-10-27 17:30:49,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 17:30:49,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:30:49,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:30:49,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:30:49,179 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:30:49,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:30:49,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1164768893, now seen corresponding path program 1 times [2020-10-27 17:30:49,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:30:49,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660789579] [2020-10-27 17:30:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:30:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:49,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:49,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:49,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-27 17:30:49,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:49,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-27 17:30:49,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:49,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:30:49,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 17:30:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 17:30:49,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:49,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:30:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:49,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:49,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:49,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:30:49,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:49,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:30:49,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:49,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:30:49,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:30:49,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:30:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:30:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:49,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:49,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:30:49,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:49,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 17:30:49,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:30:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 17:30:49,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:30:50,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660789579] [2020-10-27 17:30:50,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:30:50,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:30:50,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371577428] [2020-10-27 17:30:50,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:30:50,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:30:50,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:30:50,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:30:50,047 INFO L87 Difference]: Start difference. First operand 1825 states and 2293 transitions. Second operand 5 states. [2020-10-27 17:30:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:30:52,933 INFO L93 Difference]: Finished difference Result 5014 states and 6483 transitions. [2020-10-27 17:30:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:30:52,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-27 17:30:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:30:52,954 INFO L225 Difference]: With dead ends: 5014 [2020-10-27 17:30:52,955 INFO L226 Difference]: Without dead ends: 3195 [2020-10-27 17:30:52,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:30:52,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2020-10-27 17:30:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 2987. [2020-10-27 17:30:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2987 states. [2020-10-27 17:30:53,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 3808 transitions. [2020-10-27 17:30:53,064 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 3808 transitions. Word has length 199 [2020-10-27 17:30:53,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:30:53,064 INFO L481 AbstractCegarLoop]: Abstraction has 2987 states and 3808 transitions. [2020-10-27 17:30:53,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:30:53,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 3808 transitions. [2020-10-27 17:30:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-27 17:30:53,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:30:53,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:30:53,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:30:53,072 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:30:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:30:53,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2006903800, now seen corresponding path program 1 times [2020-10-27 17:30:53,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:30:53,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981260060] [2020-10-27 17:30:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:30:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:53,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:58,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:58,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 17:30:58,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:30:58,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 17:30:58,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:30:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 17:30:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:30:58,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:30:58,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:30:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:58,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:58,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:58,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:30:58,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:58,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:30:58,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:58,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:30:58,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:58,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:30:58,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:58,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:30:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:58,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:58,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:58,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:30:58,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 17:30:58,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:30:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:30:58,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:30:58,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 17:30:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:30:58,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:30:58,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:30:58,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:30:58,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:30:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 17:30:58,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:30:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:30:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:30:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 17:30:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 17:30:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-27 17:30:58,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981260060] [2020-10-27 17:30:58,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:30:58,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:30:58,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610742333] [2020-10-27 17:30:58,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:30:58,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:30:58,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:30:58,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:30:58,766 INFO L87 Difference]: Start difference. First operand 2987 states and 3808 transitions. Second operand 5 states. [2020-10-27 17:31:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:31:01,536 INFO L93 Difference]: Finished difference Result 7737 states and 10020 transitions. [2020-10-27 17:31:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:31:01,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2020-10-27 17:31:01,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:31:01,566 INFO L225 Difference]: With dead ends: 7737 [2020-10-27 17:31:01,567 INFO L226 Difference]: Without dead ends: 4756 [2020-10-27 17:31:01,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:31:01,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2020-10-27 17:31:01,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 4728. [2020-10-27 17:31:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4728 states. [2020-10-27 17:31:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4728 states to 4728 states and 5883 transitions. [2020-10-27 17:31:01,702 INFO L78 Accepts]: Start accepts. Automaton has 4728 states and 5883 transitions. Word has length 236 [2020-10-27 17:31:01,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:31:01,703 INFO L481 AbstractCegarLoop]: Abstraction has 4728 states and 5883 transitions. [2020-10-27 17:31:01,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:31:01,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4728 states and 5883 transitions. [2020-10-27 17:31:01,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-27 17:31:01,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:31:01,711 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:31:01,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:31:01,712 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:31:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:31:01,712 INFO L82 PathProgramCache]: Analyzing trace with hash -515928215, now seen corresponding path program 1 times [2020-10-27 17:31:01,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:31:01,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282773664] [2020-10-27 17:31:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:31:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:01,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:03,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:03,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-27 17:31:03,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:31:03,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1620 [2020-10-27 17:31:03,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:03,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:31:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-27 17:31:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:31:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:03,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:31:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:03,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:03,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:31:03,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:03,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 17:31:03,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:03,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:03,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:31:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:03,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:03,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:31:03,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:03,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 17:31:03,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:03,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:03,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 17:31:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:03,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:03,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:03,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 17:31:03,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 17:31:03,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:31:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 17:31:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-27 17:31:03,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282773664] [2020-10-27 17:31:03,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:31:03,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:31:03,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606443922] [2020-10-27 17:31:03,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:31:03,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:31:03,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:31:03,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:31:03,879 INFO L87 Difference]: Start difference. First operand 4728 states and 5883 transitions. Second operand 5 states. [2020-10-27 17:31:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:31:06,699 INFO L93 Difference]: Finished difference Result 10639 states and 13504 transitions. [2020-10-27 17:31:06,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:31:06,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-27 17:31:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:31:06,738 INFO L225 Difference]: With dead ends: 10639 [2020-10-27 17:31:06,738 INFO L226 Difference]: Without dead ends: 6105 [2020-10-27 17:31:06,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:31:06,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2020-10-27 17:31:06,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 6080. [2020-10-27 17:31:06,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6080 states. [2020-10-27 17:31:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 7526 transitions. [2020-10-27 17:31:06,937 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 7526 transitions. Word has length 280 [2020-10-27 17:31:06,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:31:06,938 INFO L481 AbstractCegarLoop]: Abstraction has 6080 states and 7526 transitions. [2020-10-27 17:31:06,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:31:06,938 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 7526 transitions. [2020-10-27 17:31:06,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-27 17:31:06,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:31:06,953 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:31:06,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 17:31:06,953 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:31:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:31:06,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1752638532, now seen corresponding path program 1 times [2020-10-27 17:31:06,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:31:06,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579928706] [2020-10-27 17:31:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:31:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:07,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:07,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:07,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:09,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:09,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 17:31:09,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 17:31:09,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2129 [2020-10-27 17:31:09,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:31:09,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 256 [2020-10-27 17:31:09,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 17:31:09,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:09,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:31:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:09,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:09,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:09,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:31:09,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:09,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:31:09,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:09,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:09,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:09,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:09,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:09,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:31:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:09,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:09,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:09,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:31:09,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 17:31:09,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:09,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:09,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:09,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:09,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:09,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 17:31:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:09,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:09,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:09,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:09,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:31:09,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:31:09,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 17:31:09,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:31:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-27 17:31:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:31:09,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-27 17:31:09,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579928706] [2020-10-27 17:31:09,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:31:09,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:31:09,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751477660] [2020-10-27 17:31:09,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:31:09,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:31:09,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:31:09,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:31:09,701 INFO L87 Difference]: Start difference. First operand 6080 states and 7526 transitions. Second operand 6 states. [2020-10-27 17:31:11,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:31:11,665 INFO L93 Difference]: Finished difference Result 11971 states and 14864 transitions. [2020-10-27 17:31:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:31:11,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 313 [2020-10-27 17:31:11,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:31:11,695 INFO L225 Difference]: With dead ends: 11971 [2020-10-27 17:31:11,695 INFO L226 Difference]: Without dead ends: 6085 [2020-10-27 17:31:11,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:31:11,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6085 states. [2020-10-27 17:31:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6085 to 6072. [2020-10-27 17:31:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6072 states. [2020-10-27 17:31:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 7501 transitions. [2020-10-27 17:31:11,867 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 7501 transitions. Word has length 313 [2020-10-27 17:31:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:31:11,868 INFO L481 AbstractCegarLoop]: Abstraction has 6072 states and 7501 transitions. [2020-10-27 17:31:11,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:31:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 7501 transitions. [2020-10-27 17:31:11,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-27 17:31:11,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:31:11,880 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:31:11,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 17:31:11,881 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:31:11,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:31:11,882 INFO L82 PathProgramCache]: Analyzing trace with hash 536484806, now seen corresponding path program 1 times [2020-10-27 17:31:11,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:31:11,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168545286] [2020-10-27 17:31:11,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:31:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:12,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:12,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 17:31:12,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:12,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-27 17:31:12,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:31:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 17:31:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 17:31:12,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:12,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:31:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:12,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:12,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:31:12,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:31:12,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:12,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:12,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:31:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:12,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:12,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:12,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:31:12,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 17:31:12,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:31:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 17:31:12,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:12,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 17:31:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:12,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:12,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:31:12,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:12,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 17:31:12,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:31:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:31:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:31:12,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:31:13,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168545286] [2020-10-27 17:31:13,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:31:13,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:31:13,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543267180] [2020-10-27 17:31:13,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:31:13,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:31:13,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:31:13,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:31:13,378 INFO L87 Difference]: Start difference. First operand 6072 states and 7501 transitions. Second operand 8 states. [2020-10-27 17:31:18,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:31:18,201 INFO L93 Difference]: Finished difference Result 13186 states and 16764 transitions. [2020-10-27 17:31:18,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 17:31:18,203 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 313 [2020-10-27 17:31:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:31:18,235 INFO L225 Difference]: With dead ends: 13186 [2020-10-27 17:31:18,235 INFO L226 Difference]: Without dead ends: 7308 [2020-10-27 17:31:18,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 17:31:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7308 states. [2020-10-27 17:31:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7308 to 7284. [2020-10-27 17:31:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7284 states. [2020-10-27 17:31:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7284 states to 7284 states and 9191 transitions. [2020-10-27 17:31:18,442 INFO L78 Accepts]: Start accepts. Automaton has 7284 states and 9191 transitions. Word has length 313 [2020-10-27 17:31:18,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:31:18,443 INFO L481 AbstractCegarLoop]: Abstraction has 7284 states and 9191 transitions. [2020-10-27 17:31:18,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:31:18,443 INFO L276 IsEmpty]: Start isEmpty. Operand 7284 states and 9191 transitions. [2020-10-27 17:31:18,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-27 17:31:18,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:31:18,463 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:31:18,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 17:31:18,464 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:31:18,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:31:18,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1347496878, now seen corresponding path program 1 times [2020-10-27 17:31:18,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:31:18,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311350603] [2020-10-27 17:31:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:31:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:18,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:19,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:22,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:23,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:23,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-27 17:31:23,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:31:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 17:31:23,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:31:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-27 17:31:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:31:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:23,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:31:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:23,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:23,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:23,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:31:23,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:23,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:31:23,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:23,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:23,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:23,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:23,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:31:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:23,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:23,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 17:31:23,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:23,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:31:23,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 17:31:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:23,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:23,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:31:23,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:23,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 17:31:23,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:23,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:23,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 17:31:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:23,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:23,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:23,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 17:31:23,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:23,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 17:31:23,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:23,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:31:23,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:23,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 17:31:23,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 183 proven. 3 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-10-27 17:31:23,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311350603] [2020-10-27 17:31:23,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:31:23,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:31:23,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641572080] [2020-10-27 17:31:23,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:31:23,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:31:23,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:31:23,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:31:23,997 INFO L87 Difference]: Start difference. First operand 7284 states and 9191 transitions. Second operand 5 states. [2020-10-27 17:31:26,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:31:26,889 INFO L93 Difference]: Finished difference Result 15893 states and 20507 transitions. [2020-10-27 17:31:26,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:31:26,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 363 [2020-10-27 17:31:26,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:31:26,927 INFO L225 Difference]: With dead ends: 15893 [2020-10-27 17:31:26,927 INFO L226 Difference]: Without dead ends: 8803 [2020-10-27 17:31:26,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:31:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8803 states. [2020-10-27 17:31:27,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8803 to 8788. [2020-10-27 17:31:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8788 states. [2020-10-27 17:31:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8788 states to 8788 states and 11045 transitions. [2020-10-27 17:31:27,151 INFO L78 Accepts]: Start accepts. Automaton has 8788 states and 11045 transitions. Word has length 363 [2020-10-27 17:31:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:31:27,152 INFO L481 AbstractCegarLoop]: Abstraction has 8788 states and 11045 transitions. [2020-10-27 17:31:27,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:31:27,152 INFO L276 IsEmpty]: Start isEmpty. Operand 8788 states and 11045 transitions. [2020-10-27 17:31:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-27 17:31:27,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:31:27,173 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:31:27,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 17:31:27,173 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:31:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:31:27,174 INFO L82 PathProgramCache]: Analyzing trace with hash 233323406, now seen corresponding path program 1 times [2020-10-27 17:31:27,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:31:27,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471195329] [2020-10-27 17:31:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:31:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:27,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:28,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:31,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:32,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:32,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-27 17:31:32,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:31:32,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 17:31:32,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:31:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 314 [2020-10-27 17:31:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:31:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:31:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:32,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:32,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:31:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:31:32,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:32,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:31:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:32,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:32,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:32,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 17:31:32,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:32,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:31:32,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:32,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:32,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:32,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:32,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:32,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 17:31:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:32,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:32,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:31:32,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 17:31:32,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:32,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 17:31:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:32,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:32,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:32,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 17:31:32,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:32,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 17:31:32,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:31:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 17:31:32,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 183 proven. 3 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-27 17:31:32,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471195329] [2020-10-27 17:31:32,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:31:32,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:31:32,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142551490] [2020-10-27 17:31:32,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:31:32,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:31:32,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:31:32,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:31:32,743 INFO L87 Difference]: Start difference. First operand 8788 states and 11045 transitions. Second operand 5 states. [2020-10-27 17:31:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:31:35,457 INFO L93 Difference]: Finished difference Result 19860 states and 25561 transitions. [2020-10-27 17:31:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:31:35,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 368 [2020-10-27 17:31:35,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:31:35,497 INFO L225 Difference]: With dead ends: 19860 [2020-10-27 17:31:35,497 INFO L226 Difference]: Without dead ends: 11266 [2020-10-27 17:31:35,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:31:35,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11266 states. [2020-10-27 17:31:35,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11266 to 11262. [2020-10-27 17:31:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11262 states. [2020-10-27 17:31:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11262 states to 11262 states and 14352 transitions. [2020-10-27 17:31:35,785 INFO L78 Accepts]: Start accepts. Automaton has 11262 states and 14352 transitions. Word has length 368 [2020-10-27 17:31:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:31:35,786 INFO L481 AbstractCegarLoop]: Abstraction has 11262 states and 14352 transitions. [2020-10-27 17:31:35,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:31:35,786 INFO L276 IsEmpty]: Start isEmpty. Operand 11262 states and 14352 transitions. [2020-10-27 17:31:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-27 17:31:35,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:31:35,815 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:31:35,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 17:31:35,816 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:31:35,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:31:35,817 INFO L82 PathProgramCache]: Analyzing trace with hash 733406062, now seen corresponding path program 1 times [2020-10-27 17:31:35,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:31:35,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459089052] [2020-10-27 17:31:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:31:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:35,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:36,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:37,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:37,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-27 17:31:37,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:31:37,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-10-27 17:31:37,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:31:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-27 17:31:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:31:37,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:37,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:31:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:37,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:37,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:37,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:31:37,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:31:37,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:31:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:37,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:37,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:37,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:31:37,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:37,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:31:37,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:37,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 17:31:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:37,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:37,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 17:31:37,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 17:31:37,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:31:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-27 17:31:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-27 17:31:38,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459089052] [2020-10-27 17:31:38,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:31:38,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:31:38,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210879671] [2020-10-27 17:31:38,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:31:38,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:31:38,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:31:38,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:31:38,083 INFO L87 Difference]: Start difference. First operand 11262 states and 14352 transitions. Second operand 5 states. [2020-10-27 17:31:40,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:31:40,993 INFO L93 Difference]: Finished difference Result 25345 states and 32470 transitions. [2020-10-27 17:31:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:31:40,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 374 [2020-10-27 17:31:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:31:41,057 INFO L225 Difference]: With dead ends: 25345 [2020-10-27 17:31:41,057 INFO L226 Difference]: Without dead ends: 14277 [2020-10-27 17:31:41,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:31:41,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14277 states. [2020-10-27 17:31:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14277 to 13900. [2020-10-27 17:31:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13900 states. [2020-10-27 17:31:41,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13900 states to 13900 states and 17279 transitions. [2020-10-27 17:31:41,411 INFO L78 Accepts]: Start accepts. Automaton has 13900 states and 17279 transitions. Word has length 374 [2020-10-27 17:31:41,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:31:41,412 INFO L481 AbstractCegarLoop]: Abstraction has 13900 states and 17279 transitions. [2020-10-27 17:31:41,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:31:41,412 INFO L276 IsEmpty]: Start isEmpty. Operand 13900 states and 17279 transitions. [2020-10-27 17:31:41,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-27 17:31:41,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:31:41,435 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:31:41,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 17:31:41,436 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:31:41,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:31:41,436 INFO L82 PathProgramCache]: Analyzing trace with hash 230624038, now seen corresponding path program 1 times [2020-10-27 17:31:41,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:31:41,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728171634] [2020-10-27 17:31:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:31:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:41,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:41,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:43,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:43,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-27 17:31:43,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:31:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1858 [2020-10-27 17:31:43,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:31:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 17:31:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:31:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:43,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:31:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:43,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:43,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:43,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:31:43,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:43,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:31:43,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:43,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:31:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:43,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:43,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:43,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:31:43,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:43,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 17:31:43,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:43,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:43,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:43,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:43,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:43,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 17:31:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:43,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:43,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:43,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 17:31:43,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:43,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 17:31:43,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:31:43,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:43,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 17:31:43,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:43,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-27 17:31:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:43,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:43,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:31:43,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 17:31:43,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:31:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:31:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:31:43,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 17:31:43,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728171634] [2020-10-27 17:31:43,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:31:43,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:31:43,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8010241] [2020-10-27 17:31:43,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:31:43,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:31:43,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:31:43,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:31:43,897 INFO L87 Difference]: Start difference. First operand 13900 states and 17279 transitions. Second operand 7 states. [2020-10-27 17:31:46,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:31:46,958 INFO L93 Difference]: Finished difference Result 29176 states and 36604 transitions. [2020-10-27 17:31:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:31:46,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-27 17:31:46,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:31:47,020 INFO L225 Difference]: With dead ends: 29176 [2020-10-27 17:31:47,020 INFO L226 Difference]: Without dead ends: 15470 [2020-10-27 17:31:47,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:31:47,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15470 states. [2020-10-27 17:31:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15470 to 15414. [2020-10-27 17:31:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15414 states. [2020-10-27 17:31:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15414 states to 15414 states and 19064 transitions. [2020-10-27 17:31:47,435 INFO L78 Accepts]: Start accepts. Automaton has 15414 states and 19064 transitions. Word has length 383 [2020-10-27 17:31:47,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:31:47,436 INFO L481 AbstractCegarLoop]: Abstraction has 15414 states and 19064 transitions. [2020-10-27 17:31:47,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:31:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 15414 states and 19064 transitions. [2020-10-27 17:31:47,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-27 17:31:47,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:31:47,473 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:31:47,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 17:31:47,473 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:31:47,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:31:47,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1704066791, now seen corresponding path program 1 times [2020-10-27 17:31:47,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:31:47,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133347645] [2020-10-27 17:31:47,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:31:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:47,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:47,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:48,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:50,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:50,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-27 17:31:50,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:31:50,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2930 [2020-10-27 17:31:50,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:31:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-10-27 17:31:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 17:31:50,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:31:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:50,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:50,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:50,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:31:50,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:50,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:31:50,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:50,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:50,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:31:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:50,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:50,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:50,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 17:31:50,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:50,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:31:50,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:50,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:50,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:50,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:50,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:50,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 17:31:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:50,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:50,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:50,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:31:50,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:50,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 17:31:50,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:31:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 17:31:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:50,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 17:31:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:50,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:50,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:50,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 17:31:50,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:50,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 17:31:50,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:50,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:31:50,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:31:50,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 17:31:50,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-27 17:31:51,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133347645] [2020-10-27 17:31:51,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:31:51,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:31:51,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517769394] [2020-10-27 17:31:51,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:31:51,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:31:51,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:31:51,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:31:51,367 INFO L87 Difference]: Start difference. First operand 15414 states and 19064 transitions. Second operand 7 states. [2020-10-27 17:31:54,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:31:54,260 INFO L93 Difference]: Finished difference Result 30052 states and 37301 transitions. [2020-10-27 17:31:54,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 17:31:54,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 384 [2020-10-27 17:31:54,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:31:54,310 INFO L225 Difference]: With dead ends: 30052 [2020-10-27 17:31:54,310 INFO L226 Difference]: Without dead ends: 14832 [2020-10-27 17:31:54,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 17:31:54,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14832 states. [2020-10-27 17:31:54,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14832 to 13699. [2020-10-27 17:31:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13699 states. [2020-10-27 17:31:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13699 states to 13699 states and 16301 transitions. [2020-10-27 17:31:54,634 INFO L78 Accepts]: Start accepts. Automaton has 13699 states and 16301 transitions. Word has length 384 [2020-10-27 17:31:54,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:31:54,634 INFO L481 AbstractCegarLoop]: Abstraction has 13699 states and 16301 transitions. [2020-10-27 17:31:54,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:31:54,634 INFO L276 IsEmpty]: Start isEmpty. Operand 13699 states and 16301 transitions. [2020-10-27 17:31:54,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-27 17:31:54,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:31:54,655 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:31:54,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 17:31:54,655 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:31:54,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:31:54,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1397005846, now seen corresponding path program 1 times [2020-10-27 17:31:54,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:31:54,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899334285] [2020-10-27 17:31:54,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:31:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:54,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:54,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:55,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:56,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:56,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-27 17:31:56,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:31:56,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1664 [2020-10-27 17:31:56,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:31:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 221 [2020-10-27 17:31:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:31:56,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:56,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:31:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:56,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:56,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:31:56,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:31:56,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:56,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:56,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:31:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:56,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:56,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:31:56,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:56,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 17:31:56,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:31:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:31:56,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:56,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 17:31:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:56,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:56,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:56,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 17:31:56,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 17:31:56,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:31:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:31:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 17:31:56,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:56,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-27 17:31:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:31:56,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:31:56,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:31:56,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:31:56,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:31:56,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 17:31:56,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:31:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:31:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:31:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:31:56,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:31:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 369 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-27 17:31:57,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899334285] [2020-10-27 17:31:57,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:31:57,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:31:57,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483901477] [2020-10-27 17:31:57,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:31:57,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:31:57,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:31:57,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:31:57,005 INFO L87 Difference]: Start difference. First operand 13699 states and 16301 transitions. Second operand 7 states. [2020-10-27 17:32:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:32:01,567 INFO L93 Difference]: Finished difference Result 31935 states and 38152 transitions. [2020-10-27 17:32:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:32:01,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2020-10-27 17:32:01,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:32:01,628 INFO L225 Difference]: With dead ends: 31935 [2020-10-27 17:32:01,628 INFO L226 Difference]: Without dead ends: 17474 [2020-10-27 17:32:01,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:32:01,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17474 states. [2020-10-27 17:32:01,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17474 to 17092. [2020-10-27 17:32:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17092 states. [2020-10-27 17:32:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17092 states to 17092 states and 20270 transitions. [2020-10-27 17:32:02,029 INFO L78 Accepts]: Start accepts. Automaton has 17092 states and 20270 transitions. Word has length 391 [2020-10-27 17:32:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:32:02,030 INFO L481 AbstractCegarLoop]: Abstraction has 17092 states and 20270 transitions. [2020-10-27 17:32:02,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:32:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 17092 states and 20270 transitions. [2020-10-27 17:32:02,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-27 17:32:02,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:32:02,051 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:32:02,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 17:32:02,051 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:32:02,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:32:02,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1931565717, now seen corresponding path program 1 times [2020-10-27 17:32:02,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:32:02,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714329616] [2020-10-27 17:32:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:32:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:02,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:02,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:02,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-27 17:32:02,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:02,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-10-27 17:32:02,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:02,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:02,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-27 17:32:02,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:32:02,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:03,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:32:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:03,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:03,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:03,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:32:03,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:03,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:32:03,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:03,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:03,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:32:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:03,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:03,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:03,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 17:32:03,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:03,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 17:32:03,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:03,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:03,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:03,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:03,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 17:32:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:03,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:03,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:32:03,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:03,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 17:32:03,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:03,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:32:03,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:03,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 17:32:03,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 17:32:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:03,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:03,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:32:03,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:03,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 17:32:03,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:03,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:32:03,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:32:03,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-27 17:32:03,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714329616] [2020-10-27 17:32:03,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:32:03,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:32:03,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443978365] [2020-10-27 17:32:03,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:32:03,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:32:03,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:32:03,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:32:03,550 INFO L87 Difference]: Start difference. First operand 17092 states and 20270 transitions. Second operand 7 states. [2020-10-27 17:32:06,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:32:06,856 INFO L93 Difference]: Finished difference Result 31762 states and 37777 transitions. [2020-10-27 17:32:06,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:32:06,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-10-27 17:32:06,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:32:06,913 INFO L225 Difference]: With dead ends: 31762 [2020-10-27 17:32:06,913 INFO L226 Difference]: Without dead ends: 17322 [2020-10-27 17:32:06,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 17:32:06,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17322 states. [2020-10-27 17:32:07,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17322 to 17316. [2020-10-27 17:32:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17316 states. [2020-10-27 17:32:07,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17316 states to 17316 states and 20574 transitions. [2020-10-27 17:32:07,381 INFO L78 Accepts]: Start accepts. Automaton has 17316 states and 20574 transitions. Word has length 394 [2020-10-27 17:32:07,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:32:07,381 INFO L481 AbstractCegarLoop]: Abstraction has 17316 states and 20574 transitions. [2020-10-27 17:32:07,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:32:07,382 INFO L276 IsEmpty]: Start isEmpty. Operand 17316 states and 20574 transitions. [2020-10-27 17:32:07,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-10-27 17:32:07,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:32:07,402 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:32:07,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 17:32:07,403 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:32:07,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:32:07,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1434051384, now seen corresponding path program 1 times [2020-10-27 17:32:07,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:32:07,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023004350] [2020-10-27 17:32:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:32:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:08,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:08,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-27 17:32:08,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-27 17:32:08,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 17:32:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 17:32:08,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:08,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:32:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:08,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:08,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:08,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:32:08,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:32:08,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:08,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:32:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:08,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:08,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:08,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:32:08,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:08,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 17:32:08,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:32:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 17:32:08,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:08,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 17:32:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:08,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:08,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 17:32:08,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 17:32:08,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:32:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 17:32:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:08,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-27 17:32:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:08,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:08,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:32:08,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 17:32:08,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-27 17:32:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 288 proven. 106 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 17:32:08,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023004350] [2020-10-27 17:32:08,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:32:08,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:32:08,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667090184] [2020-10-27 17:32:08,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:32:08,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:32:08,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:32:08,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:32:08,620 INFO L87 Difference]: Start difference. First operand 17316 states and 20574 transitions. Second operand 7 states. [2020-10-27 17:32:11,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:32:11,781 INFO L93 Difference]: Finished difference Result 35040 states and 41812 transitions. [2020-10-27 17:32:11,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:32:11,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 420 [2020-10-27 17:32:11,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:32:11,837 INFO L225 Difference]: With dead ends: 35040 [2020-10-27 17:32:11,837 INFO L226 Difference]: Without dead ends: 19804 [2020-10-27 17:32:11,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:32:11,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19804 states. [2020-10-27 17:32:12,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19804 to 18848. [2020-10-27 17:32:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18848 states. [2020-10-27 17:32:12,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18848 states to 18848 states and 22366 transitions. [2020-10-27 17:32:12,267 INFO L78 Accepts]: Start accepts. Automaton has 18848 states and 22366 transitions. Word has length 420 [2020-10-27 17:32:12,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:32:12,267 INFO L481 AbstractCegarLoop]: Abstraction has 18848 states and 22366 transitions. [2020-10-27 17:32:12,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:32:12,267 INFO L276 IsEmpty]: Start isEmpty. Operand 18848 states and 22366 transitions. [2020-10-27 17:32:12,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-27 17:32:12,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:32:12,286 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:32:12,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 17:32:12,287 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:32:12,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:32:12,287 INFO L82 PathProgramCache]: Analyzing trace with hash 123178825, now seen corresponding path program 1 times [2020-10-27 17:32:12,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:32:12,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033867139] [2020-10-27 17:32:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:32:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:12,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:12,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:12,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-27 17:32:12,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:12,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-27 17:32:12,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-27 17:32:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:32:12,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:32:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:12,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:32:13,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:32:13,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:13,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:32:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:13,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:13,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 17:32:13,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:13,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 17:32:13,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:13,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 17:32:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:13,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:13,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:13,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:32:13,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:13,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 17:32:13,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:32:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 17:32:13,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:13,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 17:32:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:13,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:13,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:13,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:32:13,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:13,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 17:32:13,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:32:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:32:13,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-27 17:32:13,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033867139] [2020-10-27 17:32:13,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:32:13,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:32:13,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469406664] [2020-10-27 17:32:13,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:32:13,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:32:13,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:32:13,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:32:13,704 INFO L87 Difference]: Start difference. First operand 18848 states and 22366 transitions. Second operand 8 states. [2020-10-27 17:32:18,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:32:18,169 INFO L93 Difference]: Finished difference Result 35427 states and 42007 transitions. [2020-10-27 17:32:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 17:32:18,169 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 429 [2020-10-27 17:32:18,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:32:18,204 INFO L225 Difference]: With dead ends: 35427 [2020-10-27 17:32:18,205 INFO L226 Difference]: Without dead ends: 19423 [2020-10-27 17:32:18,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-27 17:32:18,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19423 states. [2020-10-27 17:32:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19423 to 19036. [2020-10-27 17:32:18,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19036 states. [2020-10-27 17:32:18,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19036 states to 19036 states and 22520 transitions. [2020-10-27 17:32:18,617 INFO L78 Accepts]: Start accepts. Automaton has 19036 states and 22520 transitions. Word has length 429 [2020-10-27 17:32:18,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:32:18,617 INFO L481 AbstractCegarLoop]: Abstraction has 19036 states and 22520 transitions. [2020-10-27 17:32:18,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:32:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 19036 states and 22520 transitions. [2020-10-27 17:32:18,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-10-27 17:32:18,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:32:18,639 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:32:18,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 17:32:18,640 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:32:18,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:32:18,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1430427733, now seen corresponding path program 1 times [2020-10-27 17:32:18,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:32:18,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136243029] [2020-10-27 17:32:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:32:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:18,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:20,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:20,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-27 17:32:20,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:32:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1954 [2020-10-27 17:32:20,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 283 [2020-10-27 17:32:20,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:32:20,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:20,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:32:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:20,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:20,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:32:20,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:20,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:32:20,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:20,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:20,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:20,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:32:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:20,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:20,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 17:32:20,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:20,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 17:32:20,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:20,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:20,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 17:32:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:20,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:21,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:21,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 17:32:21,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:21,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 17:32:21,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:32:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-27 17:32:21,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:21,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-27 17:32:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:21,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:21,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:21,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:32:21,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 17:32:21,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:32:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:32:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-27 17:32:21,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136243029] [2020-10-27 17:32:21,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:32:21,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:32:21,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390645988] [2020-10-27 17:32:21,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:32:21,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:32:21,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:32:21,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:32:21,568 INFO L87 Difference]: Start difference. First operand 19036 states and 22520 transitions. Second operand 7 states. [2020-10-27 17:32:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:32:24,693 INFO L93 Difference]: Finished difference Result 39225 states and 46515 transitions. [2020-10-27 17:32:24,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:32:24,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 453 [2020-10-27 17:32:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:32:24,736 INFO L225 Difference]: With dead ends: 39225 [2020-10-27 17:32:24,736 INFO L226 Difference]: Without dead ends: 20573 [2020-10-27 17:32:24,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 17:32:24,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20573 states. [2020-10-27 17:32:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20573 to 20368. [2020-10-27 17:32:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20368 states. [2020-10-27 17:32:25,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20368 states to 20368 states and 23922 transitions. [2020-10-27 17:32:25,105 INFO L78 Accepts]: Start accepts. Automaton has 20368 states and 23922 transitions. Word has length 453 [2020-10-27 17:32:25,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:32:25,106 INFO L481 AbstractCegarLoop]: Abstraction has 20368 states and 23922 transitions. [2020-10-27 17:32:25,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:32:25,106 INFO L276 IsEmpty]: Start isEmpty. Operand 20368 states and 23922 transitions. [2020-10-27 17:32:25,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-10-27 17:32:25,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:32:25,133 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:32:25,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 17:32:25,136 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:32:25,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:32:25,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1193713183, now seen corresponding path program 1 times [2020-10-27 17:32:25,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:32:25,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200634547] [2020-10-27 17:32:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:32:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:25,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:25,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:28,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:28,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-27 17:32:28,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:32:28,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3187 [2020-10-27 17:32:28,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 362 [2020-10-27 17:32:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 17:32:28,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:28,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:32:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:28,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:28,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:28,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:32:28,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:32:28,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:28,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:32:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:28,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:28,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:28,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 17:32:28,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 17:32:28,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:28,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 17:32:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:28,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:28,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:28,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:32:28,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 17:32:28,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:28,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 17:32:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:28,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:28,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:32:28,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:32:28,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 17:32:28,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:28,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:32:28,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 17:32:28,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:32:28,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:28,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-27 17:32:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:29,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:29,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 17:32:29,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 17:32:29,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:32:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 17:32:29,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 539 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-27 17:32:29,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200634547] [2020-10-27 17:32:29,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:32:29,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:32:29,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152212389] [2020-10-27 17:32:29,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:32:29,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:32:29,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:32:29,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:32:29,194 INFO L87 Difference]: Start difference. First operand 20368 states and 23922 transitions. Second operand 8 states. [2020-10-27 17:32:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:32:37,361 INFO L93 Difference]: Finished difference Result 42271 states and 49658 transitions. [2020-10-27 17:32:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 17:32:37,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 523 [2020-10-27 17:32:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:32:37,402 INFO L225 Difference]: With dead ends: 42271 [2020-10-27 17:32:37,402 INFO L226 Difference]: Without dead ends: 20757 [2020-10-27 17:32:37,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-27 17:32:37,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20757 states. [2020-10-27 17:32:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20757 to 20553. [2020-10-27 17:32:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20553 states. [2020-10-27 17:32:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20553 states to 20553 states and 23667 transitions. [2020-10-27 17:32:37,736 INFO L78 Accepts]: Start accepts. Automaton has 20553 states and 23667 transitions. Word has length 523 [2020-10-27 17:32:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:32:37,737 INFO L481 AbstractCegarLoop]: Abstraction has 20553 states and 23667 transitions. [2020-10-27 17:32:37,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:32:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 20553 states and 23667 transitions. [2020-10-27 17:32:37,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2020-10-27 17:32:37,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:32:37,768 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:32:37,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 17:32:37,768 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:32:37,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:32:37,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1966150577, now seen corresponding path program 1 times [2020-10-27 17:32:37,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:32:37,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6395008] [2020-10-27 17:32:37,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:32:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:39,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:42,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:42,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 662 [2020-10-27 17:32:42,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:32:42,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4125 [2020-10-27 17:32:42,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:42,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:42,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 17:32:42,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:32:42,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:42,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:32:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:42,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:42,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:42,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:32:42,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:42,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:32:42,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:42,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:42,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:32:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:42,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:42,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:42,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 17:32:42,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:42,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 17:32:42,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:42,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:42,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:42,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:42,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-27 17:32:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:42,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:42,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 17:32:42,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 17:32:42,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:42,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-27 17:32:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:42,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:42,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 17:32:42,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:42,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 17:32:42,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:42,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:32:42,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-27 17:32:42,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:42,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 17:32:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:42,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:42,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:42,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:32:42,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:42,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 17:32:42,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:32:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:32:42,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 577 proven. 2 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2020-10-27 17:32:43,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6395008] [2020-10-27 17:32:43,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:32:43,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:32:43,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532043012] [2020-10-27 17:32:43,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:32:43,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:32:43,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:32:43,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:32:43,191 INFO L87 Difference]: Start difference. First operand 20553 states and 23667 transitions. Second operand 7 states. [2020-10-27 17:32:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:32:46,188 INFO L93 Difference]: Finished difference Result 37894 states and 43616 transitions. [2020-10-27 17:32:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:32:46,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 644 [2020-10-27 17:32:46,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:32:46,237 INFO L225 Difference]: With dead ends: 37894 [2020-10-27 17:32:46,238 INFO L226 Difference]: Without dead ends: 20567 [2020-10-27 17:32:46,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 17:32:46,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20567 states. [2020-10-27 17:32:46,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20567 to 20361. [2020-10-27 17:32:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20361 states. [2020-10-27 17:32:46,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20361 states to 20361 states and 23444 transitions. [2020-10-27 17:32:46,705 INFO L78 Accepts]: Start accepts. Automaton has 20361 states and 23444 transitions. Word has length 644 [2020-10-27 17:32:46,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:32:46,705 INFO L481 AbstractCegarLoop]: Abstraction has 20361 states and 23444 transitions. [2020-10-27 17:32:46,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:32:46,705 INFO L276 IsEmpty]: Start isEmpty. Operand 20361 states and 23444 transitions. [2020-10-27 17:32:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2020-10-27 17:32:46,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:32:46,728 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:32:46,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 17:32:46,728 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:32:46,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:32:46,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1525988389, now seen corresponding path program 1 times [2020-10-27 17:32:46,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:32:46,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66235302] [2020-10-27 17:32:46,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:32:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:47,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:51,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:51,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 663 [2020-10-27 17:32:51,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:32:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 17:32:51,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:32:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 475 [2020-10-27 17:32:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 17:32:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:52,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:32:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:52,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:52,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:52,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:32:52,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:52,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:32:52,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:52,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:52,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:52,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:52,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:52,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:32:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:52,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:52,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:52,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 17:32:52,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 17:32:52,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:52,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-27 17:32:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:52,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:52,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:52,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 17:32:52,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:52,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 17:32:52,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:52,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:32:52,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:52,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:32:52,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:52,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-27 17:32:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:52,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:52,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:32:52,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 17:32:52,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 17:32:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:32:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-27 17:32:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:52,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-27 17:32:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:52,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:52,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:32:52,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:32:52,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:32:52,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 17:32:52,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:32:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:32:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:32:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:32:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:32:53,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 577 proven. 2 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2020-10-27 17:32:53,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66235302] [2020-10-27 17:32:53,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:32:53,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:32:53,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247235051] [2020-10-27 17:32:53,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:32:53,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:32:53,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:32:53,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:32:53,428 INFO L87 Difference]: Start difference. First operand 20361 states and 23444 transitions. Second operand 8 states. [2020-10-27 17:32:54,366 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-27 17:32:58,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:32:58,506 INFO L93 Difference]: Finished difference Result 38072 states and 43755 transitions. [2020-10-27 17:32:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 17:32:58,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 645 [2020-10-27 17:32:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:32:58,547 INFO L225 Difference]: With dead ends: 38072 [2020-10-27 17:32:58,547 INFO L226 Difference]: Without dead ends: 20937 [2020-10-27 17:32:58,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-27 17:32:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20937 states. [2020-10-27 17:32:58,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20937 to 20359. [2020-10-27 17:32:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20359 states. [2020-10-27 17:32:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20359 states to 20359 states and 23420 transitions. [2020-10-27 17:32:58,883 INFO L78 Accepts]: Start accepts. Automaton has 20359 states and 23420 transitions. Word has length 645 [2020-10-27 17:32:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:32:58,884 INFO L481 AbstractCegarLoop]: Abstraction has 20359 states and 23420 transitions. [2020-10-27 17:32:58,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:32:58,884 INFO L276 IsEmpty]: Start isEmpty. Operand 20359 states and 23420 transitions. [2020-10-27 17:32:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2020-10-27 17:32:58,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:32:58,917 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:32:58,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 17:32:58,918 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:32:58,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:32:58,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1074092948, now seen corresponding path program 1 times [2020-10-27 17:32:58,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:32:58,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172281429] [2020-10-27 17:32:58,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:32:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:32:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:32:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:02,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:02,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 668 [2020-10-27 17:33:02,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:33:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3037 [2020-10-27 17:33:02,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:02,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:33:02,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 372 [2020-10-27 17:33:02,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 17:33:02,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:33:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:02,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:02,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:33:02,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:33:02,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:33:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:02,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:02,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:33:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:02,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:02,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:02,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 17:33:02,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 17:33:02,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:33:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:02,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-27 17:33:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:02,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:02,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:02,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 17:33:02,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 17:33:02,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:33:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:33:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-27 17:33:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-27 17:33:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:02,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:02,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:02,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 17:33:02,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:02,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 17:33:02,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:02,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:33:02,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:33:02,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 17:33:02,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:02,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-10-27 17:33:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:02,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:02,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:02,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:33:02,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:02,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 17:33:02,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-27 17:33:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:02,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 461 proven. 106 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-27 17:33:03,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172281429] [2020-10-27 17:33:03,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:33:03,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:33:03,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137557909] [2020-10-27 17:33:03,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:33:03,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:33:03,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:33:03,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:33:03,118 INFO L87 Difference]: Start difference. First operand 20359 states and 23420 transitions. Second operand 7 states. [2020-10-27 17:33:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:33:06,346 INFO L93 Difference]: Finished difference Result 39788 states and 45769 transitions. [2020-10-27 17:33:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:33:06,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 650 [2020-10-27 17:33:06,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:33:06,386 INFO L225 Difference]: With dead ends: 39788 [2020-10-27 17:33:06,386 INFO L226 Difference]: Without dead ends: 22083 [2020-10-27 17:33:06,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:33:06,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22083 states. [2020-10-27 17:33:06,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22083 to 21689. [2020-10-27 17:33:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21689 states. [2020-10-27 17:33:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21689 states to 21689 states and 24944 transitions. [2020-10-27 17:33:06,813 INFO L78 Accepts]: Start accepts. Automaton has 21689 states and 24944 transitions. Word has length 650 [2020-10-27 17:33:06,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:33:06,813 INFO L481 AbstractCegarLoop]: Abstraction has 21689 states and 24944 transitions. [2020-10-27 17:33:06,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:33:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 21689 states and 24944 transitions. [2020-10-27 17:33:06,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-27 17:33:06,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:33:06,836 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:33:06,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 17:33:06,836 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:33:06,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:33:06,837 INFO L82 PathProgramCache]: Analyzing trace with hash -617759150, now seen corresponding path program 1 times [2020-10-27 17:33:06,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:33:06,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034894763] [2020-10-27 17:33:06,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:33:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:07,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:09,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:09,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 695 [2020-10-27 17:33:09,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:33:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2741 [2020-10-27 17:33:09,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:33:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 508 [2020-10-27 17:33:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 17:33:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:09,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:33:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:09,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:09,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:09,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:33:09,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:09,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:33:09,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:33:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:09,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:33:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:09,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:09,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:09,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 17:33:09,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:09,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 17:33:09,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:09,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:09,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:33:09,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:09,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:10,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-27 17:33:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:10,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:10,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 17:33:10,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 17:33:10,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:33:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:10,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-27 17:33:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:10,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:10,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 17:33:10,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 17:33:10,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:33:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:33:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-27 17:33:10,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:10,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-27 17:33:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:10,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:10,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:33:10,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:10,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 17:33:10,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:33:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:33:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:33:10,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 577 proven. 2 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2020-10-27 17:33:11,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034894763] [2020-10-27 17:33:11,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:33:11,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:33:11,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364625523] [2020-10-27 17:33:11,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:33:11,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:33:11,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:33:11,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:33:11,412 INFO L87 Difference]: Start difference. First operand 21689 states and 24944 transitions. Second operand 8 states. [2020-10-27 17:33:16,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:33:16,619 INFO L93 Difference]: Finished difference Result 42052 states and 48178 transitions. [2020-10-27 17:33:16,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 17:33:16,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 677 [2020-10-27 17:33:16,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:33:16,662 INFO L225 Difference]: With dead ends: 42052 [2020-10-27 17:33:16,662 INFO L226 Difference]: Without dead ends: 20753 [2020-10-27 17:33:16,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-27 17:33:16,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20753 states. [2020-10-27 17:33:17,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20753 to 20153. [2020-10-27 17:33:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20153 states. [2020-10-27 17:33:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20153 states to 20153 states and 22584 transitions. [2020-10-27 17:33:17,146 INFO L78 Accepts]: Start accepts. Automaton has 20153 states and 22584 transitions. Word has length 677 [2020-10-27 17:33:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:33:17,147 INFO L481 AbstractCegarLoop]: Abstraction has 20153 states and 22584 transitions. [2020-10-27 17:33:17,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:33:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 20153 states and 22584 transitions. [2020-10-27 17:33:17,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2020-10-27 17:33:17,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:33:17,181 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:33:17,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 17:33:17,182 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:33:17,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:33:17,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1479017707, now seen corresponding path program 1 times [2020-10-27 17:33:17,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:33:17,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938072916] [2020-10-27 17:33:17,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:33:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:17,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:18,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:22,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:22,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 762 [2020-10-27 17:33:22,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:33:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 17:33:22,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 17:33:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:33:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 357 [2020-10-27 17:33:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:22,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:33:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:22,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:22,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:22,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:33:22,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 17:33:22,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:22,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:33:22,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:33:22,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:33:22,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:22,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:33:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:22,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:22,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:22,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 17:33:22,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:22,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 17:33:22,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:33:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:33:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 17:33:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:22,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 17:33:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:22,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:23,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:23,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:33:23,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 17:33:23,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:33:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:33:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 17:33:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:23,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 17:33:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:23,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:23,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:23,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:23,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:33:23,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:33:23,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-27 17:33:23,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:33:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:33:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:33:23,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:23,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-27 17:33:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:23,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:23,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:23,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:33:23,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:23,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 17:33:23,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:23,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:23,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 17:33:23,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:23,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-27 17:33:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:23,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:23,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:23,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 17:33:23,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:23,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 17:33:23,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 17:33:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:23,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:23,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2020-10-27 17:33:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:23,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:23,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:23,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:33:23,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 17:33:23,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-27 17:33:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 465 proven. 943 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2020-10-27 17:33:24,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938072916] [2020-10-27 17:33:24,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:33:24,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 17:33:24,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958148564] [2020-10-27 17:33:24,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 17:33:24,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:33:24,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 17:33:24,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-27 17:33:24,432 INFO L87 Difference]: Start difference. First operand 20153 states and 22584 transitions. Second operand 10 states. [2020-10-27 17:33:24,616 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-27 17:33:28,361 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-27 17:33:28,589 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-27 17:33:29,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:33:29,112 INFO L93 Difference]: Finished difference Result 39863 states and 44540 transitions. [2020-10-27 17:33:29,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 17:33:29,114 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 740 [2020-10-27 17:33:29,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:33:29,147 INFO L225 Difference]: With dead ends: 39863 [2020-10-27 17:33:29,147 INFO L226 Difference]: Without dead ends: 22356 [2020-10-27 17:33:29,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-10-27 17:33:29,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22356 states. [2020-10-27 17:33:29,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22356 to 21551. [2020-10-27 17:33:29,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21551 states. [2020-10-27 17:33:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21551 states to 21551 states and 24032 transitions. [2020-10-27 17:33:29,430 INFO L78 Accepts]: Start accepts. Automaton has 21551 states and 24032 transitions. Word has length 740 [2020-10-27 17:33:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:33:29,430 INFO L481 AbstractCegarLoop]: Abstraction has 21551 states and 24032 transitions. [2020-10-27 17:33:29,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 17:33:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 21551 states and 24032 transitions. [2020-10-27 17:33:29,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2020-10-27 17:33:29,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:33:29,455 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:33:29,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 17:33:29,456 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:33:29,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:33:29,456 INFO L82 PathProgramCache]: Analyzing trace with hash -989566090, now seen corresponding path program 1 times [2020-10-27 17:33:29,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:33:29,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013083197] [2020-10-27 17:33:29,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:33:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:29,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:33,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:33,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 909 [2020-10-27 17:33:33,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:33:33,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3858 [2020-10-27 17:33:33,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:33:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 238 [2020-10-27 17:33:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 17:33:33,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:33:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:33,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:33,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:33,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:33:33,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:33:33,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:33:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:33,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:33:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:33,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:33,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 17:33:33,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:33,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 17:33:33,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:33:33,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:33,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:33,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 17:33:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:33,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:33,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 17:33:33,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 17:33:33,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:33:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:33:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 17:33:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:33,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 17:33:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:33,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:33,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:33,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:33:33,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 17:33:33,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:33:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:33:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 17:33:33,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:34,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-27 17:33:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:34,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:34,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:34,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:33:34,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:34,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 17:33:34,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:33:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:34,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:34,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-10-27 17:33:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:34,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:34,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:34,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:33:34,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:34,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 17:33:34,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 17:33:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:34,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:34,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-10-27 17:33:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:34,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:34,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 17:33:34,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:34,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 17:33:34,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 17:33:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:34,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:34,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 711 [2020-10-27 17:33:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:34,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:33:34,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:33:34,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:33:34,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 17:33:34,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:33:34,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:33:34,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-27 17:33:34,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:33:34,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:33:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2694 backedges. 677 proven. 440 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2020-10-27 17:33:34,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013083197] [2020-10-27 17:33:34,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:33:34,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:33:34,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680411406] [2020-10-27 17:33:34,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:33:34,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:33:34,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:33:34,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:33:34,914 INFO L87 Difference]: Start difference. First operand 21551 states and 24032 transitions. Second operand 7 states. [2020-10-27 17:33:38,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:33:38,386 INFO L93 Difference]: Finished difference Result 43344 states and 48347 transitions. [2020-10-27 17:33:38,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:33:38,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 885 [2020-10-27 17:33:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:33:38,426 INFO L225 Difference]: With dead ends: 43344 [2020-10-27 17:33:38,426 INFO L226 Difference]: Without dead ends: 21987 [2020-10-27 17:33:38,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:33:38,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21987 states. [2020-10-27 17:33:38,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21987 to 21551. [2020-10-27 17:33:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21551 states. [2020-10-27 17:33:38,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21551 states to 21551 states and 23778 transitions. [2020-10-27 17:33:38,731 INFO L78 Accepts]: Start accepts. Automaton has 21551 states and 23778 transitions. Word has length 885 [2020-10-27 17:33:38,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:33:38,732 INFO L481 AbstractCegarLoop]: Abstraction has 21551 states and 23778 transitions. [2020-10-27 17:33:38,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:33:38,732 INFO L276 IsEmpty]: Start isEmpty. Operand 21551 states and 23778 transitions. [2020-10-27 17:33:38,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2020-10-27 17:33:38,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:33:38,759 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:33:38,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 17:33:38,759 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:33:38,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:33:38,760 INFO L82 PathProgramCache]: Analyzing trace with hash 240107846, now seen corresponding path program 1 times [2020-10-27 17:33:38,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:33:38,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280652134] [2020-10-27 17:33:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:33:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:33:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:39,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:39,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:33:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking...