/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/Problem16_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:41:16,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:41:16,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:41:16,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:41:16,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:41:16,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:41:16,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:41:16,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:41:16,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:41:16,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:41:16,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:41:16,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:41:16,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:41:16,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:41:16,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:41:16,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:41:16,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:41:16,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:41:16,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:41:16,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:41:16,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:41:16,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:41:16,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:41:16,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:41:16,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:41:16,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:41:16,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:41:16,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:41:16,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:41:16,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:41:16,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:41:16,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:41:16,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:41:16,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:41:16,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:41:16,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:41:16,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:41:16,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:41:16,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:41:16,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:41:16,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:41:16,672 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 18:41:16,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:41:16,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:41:16,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:41:16,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:41:16,716 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:41:16,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:41:16,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:41:16,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:41:16,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:41:16,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:41:16,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:41:16,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:41:16,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:41:16,718 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:41:16,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:41:16,718 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:41:16,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:41:16,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:41:16,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:41:16,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:41:16,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:41:16,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:41:16,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:41:16,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:41:16,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:41:16,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:41:16,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:41:16,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:41:16,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:41:16,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:41:17,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:41:17,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:41:17,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:41:17,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:41:17,195 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:41:17,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label31.c [2020-10-27 18:41:17,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44bafd853/0abda378ed51401ea134fff37122a751/FLAG14ae0cb8a [2020-10-27 18:41:18,333 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:41:18,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label31.c [2020-10-27 18:41:18,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44bafd853/0abda378ed51401ea134fff37122a751/FLAG14ae0cb8a [2020-10-27 18:41:18,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44bafd853/0abda378ed51401ea134fff37122a751 [2020-10-27 18:41:18,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:41:18,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:41:18,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:41:18,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:41:18,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:41:18,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:41:18" (1/1) ... [2020-10-27 18:41:18,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd763fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:41:18, skipping insertion in model container [2020-10-27 18:41:18,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:41:18" (1/1) ... [2020-10-27 18:41:18,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:41:18,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:41:19,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:41:19,282 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:41:19,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:41:19,552 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:41:19,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:41:19 WrapperNode [2020-10-27 18:41:19,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:41:19,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:41:19,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:41:19,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:41:19,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:41:19" (1/1) ... [2020-10-27 18:41:19,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:41:19" (1/1) ... [2020-10-27 18:41:19,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:41:19" (1/1) ... [2020-10-27 18:41:19,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:41:19" (1/1) ... [2020-10-27 18:41:19,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:41:19" (1/1) ... [2020-10-27 18:41:19,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:41:19" (1/1) ... [2020-10-27 18:41:19,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:41:19" (1/1) ... [2020-10-27 18:41:19,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:41:19,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:41:19,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:41:19,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:41:19,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:41:19" (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 18:41:19,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:41:19,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:41:19,905 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:41:19,905 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:41:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:41:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:41:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:41:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:41:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:41:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:41:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:41:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:41:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:41:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:41:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:41:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:41:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:41:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:41:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:41:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:41:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:41:22,409 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:41:22,409 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:41:22,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:41:22 BoogieIcfgContainer [2020-10-27 18:41:22,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:41:22,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:41:22,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:41:22,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:41:22,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:41:18" (1/3) ... [2020-10-27 18:41:22,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a09cdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:41:22, skipping insertion in model container [2020-10-27 18:41:22,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:41:19" (2/3) ... [2020-10-27 18:41:22,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a09cdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:41:22, skipping insertion in model container [2020-10-27 18:41:22,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:41:22" (3/3) ... [2020-10-27 18:41:22,422 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label31.c [2020-10-27 18:41:22,434 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:41:22,440 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:41:22,455 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:41:22,486 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:41:22,487 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:41:22,487 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:41:22,487 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:41:22,487 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:41:22,487 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:41:22,487 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:41:22,488 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:41:22,517 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 18:41:22,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 18:41:22,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:22,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:41:22,525 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:22,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:22,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1926687852, now seen corresponding path program 1 times [2020-10-27 18:41:22,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:22,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415781695] [2020-10-27 18:41:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:23,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:23,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 18:41:23,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-27 18:41:23,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:41:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:41:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 18:41:23,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:41:23,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:23,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:23,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:23,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:41:23,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:41:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:23,424 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 18:41:23,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415781695] [2020-10-27 18:41:23,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:41:23,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:41:23,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336019396] [2020-10-27 18:41:23,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:41:23,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:23,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:41:23,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:41:23,464 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 18:41:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:27,943 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-27 18:41:27,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:41:27,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-27 18:41:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:27,981 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 18:41:27,981 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 18:41:27,994 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 18:41:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 18:41:28,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-27 18:41:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-27 18:41:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-27 18:41:28,135 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 15 [2020-10-27 18:41:28,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:28,136 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-27 18:41:28,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:41:28,136 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-27 18:41:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 18:41:28,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:28,144 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 18:41:28,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:41:28,144 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:28,147 INFO L82 PathProgramCache]: Analyzing trace with hash 954480813, now seen corresponding path program 1 times [2020-10-27 18:41:28,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:28,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936889342] [2020-10-27 18:41:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:28,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:28,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:29,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:29,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:41:29,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:41:29,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-10-27 18:41:29,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:41:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 18:41:29,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 18:41:29,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:29,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:29,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:29,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:29,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 18:41:29,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:29,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:29,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:29,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:29,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 18:41:29,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 18:41:29,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:41:29,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:41:29,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936889342] [2020-10-27 18:41:29,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:29,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:41:29,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425450042] [2020-10-27 18:41:29,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:41:29,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:29,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:41:29,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:41:29,873 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 5 states. [2020-10-27 18:41:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:34,351 INFO L93 Difference]: Finished difference Result 2065 states and 3256 transitions. [2020-10-27 18:41:34,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:41:34,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-27 18:41:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:34,362 INFO L225 Difference]: With dead ends: 2065 [2020-10-27 18:41:34,362 INFO L226 Difference]: Without dead ends: 1381 [2020-10-27 18:41:34,365 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 18:41:34,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-10-27 18:41:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1377. [2020-10-27 18:41:34,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1377 states. [2020-10-27 18:41:34,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1889 transitions. [2020-10-27 18:41:34,431 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1889 transitions. Word has length 90 [2020-10-27 18:41:34,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:34,432 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1889 transitions. [2020-10-27 18:41:34,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:41:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1889 transitions. [2020-10-27 18:41:34,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 18:41:34,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:34,449 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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 18:41:34,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:41:34,449 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:34,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:34,450 INFO L82 PathProgramCache]: Analyzing trace with hash -286826554, now seen corresponding path program 1 times [2020-10-27 18:41:34,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:34,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112994652] [2020-10-27 18:41:34,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:34,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:34,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:35,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:35,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:36,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:38,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:38,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 18:41:38,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:41:38,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3811 [2020-10-27 18:41:38,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-27 18:41:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 18:41:38,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:38,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:38,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:38,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:38,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:38,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:41:38,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:38,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:38,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:38,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:38,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:38,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:38,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:38,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:38,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:41:38,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:38,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:41:38,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:38,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:38,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:38,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:41:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:38,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:38,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:41:38,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 18:41:38,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 18:41:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 18:41:38,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112994652] [2020-10-27 18:41:38,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:38,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:41:38,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636267817] [2020-10-27 18:41:38,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:41:38,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:38,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:41:38,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:41:38,734 INFO L87 Difference]: Start difference. First operand 1377 states and 1889 transitions. Second operand 5 states. [2020-10-27 18:41:43,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:43,179 INFO L93 Difference]: Finished difference Result 3436 states and 4845 transitions. [2020-10-27 18:41:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:41:43,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-27 18:41:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:43,198 INFO L225 Difference]: With dead ends: 3436 [2020-10-27 18:41:43,198 INFO L226 Difference]: Without dead ends: 2065 [2020-10-27 18:41:43,202 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 18:41:43,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2020-10-27 18:41:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 2061. [2020-10-27 18:41:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-27 18:41:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2794 transitions. [2020-10-27 18:41:43,293 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2794 transitions. Word has length 178 [2020-10-27 18:41:43,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:43,294 INFO L481 AbstractCegarLoop]: Abstraction has 2061 states and 2794 transitions. [2020-10-27 18:41:43,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:41:43,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2794 transitions. [2020-10-27 18:41:43,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 18:41:43,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:43,298 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 18:41:43,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:41:43,298 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:43,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:43,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1603749148, now seen corresponding path program 1 times [2020-10-27 18:41:43,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:43,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208544538] [2020-10-27 18:41:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:43,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:43,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:43,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:43,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:44,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:44,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:46,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:46,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 18:41:46,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:41:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3198 [2020-10-27 18:41:46,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 18:41:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 18:41:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:46,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:46,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:46,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:46,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:41:46,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:46,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:46,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:46,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:46,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:46,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:46,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:46,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:41:46,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:41:46,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:46,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:46,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:41:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:46,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:46,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:46,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:41:46,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:46,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 18:41:46,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:41:46,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 18:41:46,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208544538] [2020-10-27 18:41:46,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:46,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:41:46,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428928351] [2020-10-27 18:41:46,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:41:46,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:46,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:41:46,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:41:46,881 INFO L87 Difference]: Start difference. First operand 2061 states and 2794 transitions. Second operand 6 states. [2020-10-27 18:41:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:53,478 INFO L93 Difference]: Finished difference Result 4804 states and 6667 transitions. [2020-10-27 18:41:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:41:53,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2020-10-27 18:41:53,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:53,498 INFO L225 Difference]: With dead ends: 4804 [2020-10-27 18:41:53,498 INFO L226 Difference]: Without dead ends: 2749 [2020-10-27 18:41:53,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:41:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2020-10-27 18:41:53,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2745. [2020-10-27 18:41:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2745 states. [2020-10-27 18:41:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 3591 transitions. [2020-10-27 18:41:53,602 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 3591 transitions. Word has length 189 [2020-10-27 18:41:53,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:53,607 INFO L481 AbstractCegarLoop]: Abstraction has 2745 states and 3591 transitions. [2020-10-27 18:41:53,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:41:53,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 3591 transitions. [2020-10-27 18:41:53,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-27 18:41:53,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:53,618 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:41:53,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:41:53,619 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:53,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:53,619 INFO L82 PathProgramCache]: Analyzing trace with hash -549041376, now seen corresponding path program 1 times [2020-10-27 18:41:53,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:53,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041074665] [2020-10-27 18:41:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:53,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:54,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:55,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:57,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:57,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-27 18:41:57,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:41:57,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3587 [2020-10-27 18:41:57,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:57,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:57,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:41:57,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 18:41:57,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:57,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:57,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:57,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:57,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:57,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:57,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:41:57,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:57,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:57,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:57,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:57,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:57,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:57,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:41:57,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:57,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:41:57,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:57,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:57,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:41:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:57,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:57,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:57,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:41:57,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:57,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-27 18:41:57,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:57,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:41:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:41:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 18:41:58,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041074665] [2020-10-27 18:41:58,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:58,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:41:58,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618481644] [2020-10-27 18:41:58,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:41:58,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:58,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:41:58,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:41:58,154 INFO L87 Difference]: Start difference. First operand 2745 states and 3591 transitions. Second operand 6 states. [2020-10-27 18:42:03,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:03,023 INFO L93 Difference]: Finished difference Result 7531 states and 9977 transitions. [2020-10-27 18:42:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:42:03,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 379 [2020-10-27 18:42:03,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:03,053 INFO L225 Difference]: With dead ends: 7531 [2020-10-27 18:42:03,054 INFO L226 Difference]: Without dead ends: 4792 [2020-10-27 18:42:03,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:42:03,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4792 states. [2020-10-27 18:42:03,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4792 to 4451. [2020-10-27 18:42:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4451 states. [2020-10-27 18:42:03,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 5645 transitions. [2020-10-27 18:42:03,207 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 5645 transitions. Word has length 379 [2020-10-27 18:42:03,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:03,208 INFO L481 AbstractCegarLoop]: Abstraction has 4451 states and 5645 transitions. [2020-10-27 18:42:03,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:42:03,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 5645 transitions. [2020-10-27 18:42:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-27 18:42:03,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:03,220 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-27 18:42:03,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:42:03,220 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:03,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:03,221 INFO L82 PathProgramCache]: Analyzing trace with hash -446637640, now seen corresponding path program 1 times [2020-10-27 18:42:03,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:03,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923182197] [2020-10-27 18:42:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:03,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:04,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:07,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:08,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:08,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-27 18:42:08,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:42:08,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 18:42:08,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:08,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:08,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 407 [2020-10-27 18:42:08,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 18:42:08,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:42:08,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:08,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:08,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:08,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:08,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:42:08,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:08,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:08,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:08,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:42:08,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:42:08,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:08,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:42:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:08,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:08,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:42:08,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:08,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:42:08,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:08,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:42:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:08,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:08,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:08,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:42:08,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:08,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 18:42:08,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:08,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:08,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:08,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-27 18:42:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:08,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:08,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:08,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 18:42:08,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:08,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 18:42:08,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 18:42:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:42:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2020-10-27 18:42:09,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923182197] [2020-10-27 18:42:09,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:42:09,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:42:09,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868366479] [2020-10-27 18:42:09,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:42:09,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:42:09,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:42:09,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:42:09,216 INFO L87 Difference]: Start difference. First operand 4451 states and 5645 transitions. Second operand 6 states. [2020-10-27 18:42:15,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:15,923 INFO L93 Difference]: Finished difference Result 11958 states and 16030 transitions. [2020-10-27 18:42:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:42:15,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 406 [2020-10-27 18:42:15,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:15,965 INFO L225 Difference]: With dead ends: 11958 [2020-10-27 18:42:15,965 INFO L226 Difference]: Without dead ends: 7513 [2020-10-27 18:42:15,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:42:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7513 states. [2020-10-27 18:42:16,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7513 to 7509. [2020-10-27 18:42:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7509 states. [2020-10-27 18:42:16,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7509 states to 7509 states and 10026 transitions. [2020-10-27 18:42:16,193 INFO L78 Accepts]: Start accepts. Automaton has 7509 states and 10026 transitions. Word has length 406 [2020-10-27 18:42:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:16,194 INFO L481 AbstractCegarLoop]: Abstraction has 7509 states and 10026 transitions. [2020-10-27 18:42:16,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:42:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7509 states and 10026 transitions. [2020-10-27 18:42:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2020-10-27 18:42:16,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:16,227 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:42:16,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:42:16,227 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:16,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:16,228 INFO L82 PathProgramCache]: Analyzing trace with hash -903312239, now seen corresponding path program 1 times [2020-10-27 18:42:16,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:16,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767825131] [2020-10-27 18:42:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:16,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:16,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:16,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:20,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:20,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:21,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:21,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-27 18:42:21,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:42:21,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-27 18:42:21,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 18:42:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 18:42:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 576 [2020-10-27 18:42:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:21,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:21,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:21,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:21,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:21,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:42:21,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:21,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:21,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:21,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:21,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:21,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:42:21,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:21,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 18:42:21,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:42:21,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:21,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:42:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:22,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:22,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:22,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:42:22,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:42:22,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-10-27 18:42:22,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:22,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:22,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:22,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:42:22,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:22,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:42:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:22,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:23,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:23,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:42:23,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:23,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-27 18:42:23,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:42:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-27 18:42:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:23,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:42:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:23,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:23,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:42:23,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:23,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:42:23,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:23,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:42:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 18:42:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 465 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 18:42:24,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767825131] [2020-10-27 18:42:24,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:42:24,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 18:42:24,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402682668] [2020-10-27 18:42:24,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 18:42:24,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:42:24,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 18:42:24,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:42:24,313 INFO L87 Difference]: Start difference. First operand 7509 states and 10026 transitions. Second operand 9 states. [2020-10-27 18:42:30,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:30,347 INFO L93 Difference]: Finished difference Result 16069 states and 21388 transitions. [2020-10-27 18:42:30,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:42:30,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 678 [2020-10-27 18:42:30,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:30,379 INFO L225 Difference]: With dead ends: 16069 [2020-10-27 18:42:30,379 INFO L226 Difference]: Without dead ends: 7195 [2020-10-27 18:42:30,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-27 18:42:30,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7195 states. [2020-10-27 18:42:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7195 to 5488. [2020-10-27 18:42:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5488 states. [2020-10-27 18:42:30,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 6114 transitions. [2020-10-27 18:42:30,543 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 6114 transitions. Word has length 678 [2020-10-27 18:42:30,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:30,543 INFO L481 AbstractCegarLoop]: Abstraction has 5488 states and 6114 transitions. [2020-10-27 18:42:30,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 18:42:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 6114 transitions. [2020-10-27 18:42:30,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2020-10-27 18:42:30,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:30,561 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:42:30,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:42:30,561 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:30,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:30,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1846562544, now seen corresponding path program 1 times [2020-10-27 18:42:30,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:30,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367267589] [2020-10-27 18:42:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:30,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:30,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:31,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:33,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:35,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:35,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 857 [2020-10-27 18:42:35,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:42:35,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 18:42:35,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 262 [2020-10-27 18:42:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:42:35,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:35,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:35,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:35,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:35,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:35,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:42:35,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:35,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:35,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:42:35,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:35,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:35,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:35,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:42:35,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:35,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:42:35,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:35,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:42:36,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:42:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:36,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:36,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:36,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:42:36,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:36,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 18:42:36,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:42:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:42:36,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 18:42:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:36,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:36,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:36,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:42:36,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-27 18:42:36,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:42:36,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:37,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-10-27 18:42:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:37,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:37,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:37,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:42:37,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:37,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 18:42:37,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:42:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:37,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:42:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:37,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:37,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:37,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:42:37,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:37,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:42:37,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:37,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:37,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:37,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:37,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 285 proven. 272 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2020-10-27 18:42:37,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367267589] [2020-10-27 18:42:37,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:42:37,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:42:37,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739694059] [2020-10-27 18:42:37,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:42:37,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:42:37,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:42:37,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:42:37,895 INFO L87 Difference]: Start difference. First operand 5488 states and 6114 transitions. Second operand 7 states. [2020-10-27 18:42:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:43,640 INFO L93 Difference]: Finished difference Result 12375 states and 13843 transitions. [2020-10-27 18:42:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:42:43,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 837 [2020-10-27 18:42:43,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:43,663 INFO L225 Difference]: With dead ends: 12375 [2020-10-27 18:42:43,663 INFO L226 Difference]: Without dead ends: 6893 [2020-10-27 18:42:43,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:42:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2020-10-27 18:42:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6211. [2020-10-27 18:42:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2020-10-27 18:42:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 6882 transitions. [2020-10-27 18:42:43,814 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 6882 transitions. Word has length 837 [2020-10-27 18:42:43,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:43,816 INFO L481 AbstractCegarLoop]: Abstraction has 6211 states and 6882 transitions. [2020-10-27 18:42:43,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:42:43,816 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 6882 transitions. [2020-10-27 18:42:43,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2020-10-27 18:42:43,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:43,836 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:42:43,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:42:43,836 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1204241422, now seen corresponding path program 1 times [2020-10-27 18:42:43,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:43,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941374302] [2020-10-27 18:42:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:44,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:44,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:48,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:48,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 886 [2020-10-27 18:42:48,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:42:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 18:42:48,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 291 [2020-10-27 18:42:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:42:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:49,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:49,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:49,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:49,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:42:49,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:49,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:49,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:49,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:49,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:42:49,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:49,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:42:49,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:49,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:42:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:49,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:49,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:42:49,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:49,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 18:42:49,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 18:42:49,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:49,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-27 18:42:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:49,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:49,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:42:49,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-27 18:42:49,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:42:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:49,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2020-10-27 18:42:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:50,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:50,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:50,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:42:50,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:50,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 18:42:50,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:50,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:50,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:42:50,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:50,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:50,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:42:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:50,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:50,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:42:50,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:42:50,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 314 proven. 272 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2020-10-27 18:42:50,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941374302] [2020-10-27 18:42:50,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:42:50,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:42:50,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836708621] [2020-10-27 18:42:50,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:42:50,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:42:50,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:42:50,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:42:50,919 INFO L87 Difference]: Start difference. First operand 6211 states and 6882 transitions. Second operand 8 states. [2020-10-27 18:42:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:57,088 INFO L93 Difference]: Finished difference Result 12440 states and 13804 transitions. [2020-10-27 18:42:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 18:42:57,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 866 [2020-10-27 18:42:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:57,108 INFO L225 Difference]: With dead ends: 12440 [2020-10-27 18:42:57,108 INFO L226 Difference]: Without dead ends: 6235 [2020-10-27 18:42:57,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-27 18:42:57,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6235 states. [2020-10-27 18:42:57,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6235 to 6223. [2020-10-27 18:42:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-10-27 18:42:57,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 6885 transitions. [2020-10-27 18:42:57,244 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 6885 transitions. Word has length 866 [2020-10-27 18:42:57,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:57,246 INFO L481 AbstractCegarLoop]: Abstraction has 6223 states and 6885 transitions. [2020-10-27 18:42:57,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:42:57,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 6885 transitions. [2020-10-27 18:42:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2020-10-27 18:42:57,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:57,268 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-27 18:42:57,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:42:57,269 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:57,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:57,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1454308721, now seen corresponding path program 1 times [2020-10-27 18:42:57,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:57,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515343591] [2020-10-27 18:42:57,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:57,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:57,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1047 [2020-10-27 18:43:02,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:43:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 18:43:02,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:02,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 452 [2020-10-27 18:43:02,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:43:02,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:02,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:43:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:43:02,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:02,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:43:02,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:02,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:02,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:43:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:43:02,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:02,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:43:02,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:43:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:02,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:43:02,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:02,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:43:02,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:02,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:02,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:02,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:02,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 18:43:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:02,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:43:02,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:02,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 18:43:02,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:43:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-27 18:43:02,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:02,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-10-27 18:43:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:02,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:03,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:03,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:43:03,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:03,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-27 18:43:03,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:43:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:43:03,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2020-10-27 18:43:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:03,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:03,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:03,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:43:03,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 18:43:03,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:43:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:03,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:43:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:03,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:03,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:03,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:43:03,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:03,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:43:03,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:03,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1549 backedges. 486 proven. 272 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2020-10-27 18:43:05,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515343591] [2020-10-27 18:43:05,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:43:05,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:43:05,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984524583] [2020-10-27 18:43:05,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:43:05,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:43:05,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:43:05,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:43:05,029 INFO L87 Difference]: Start difference. First operand 6223 states and 6885 transitions. Second operand 7 states. [2020-10-27 18:43:12,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:43:12,132 INFO L93 Difference]: Finished difference Result 14950 states and 17083 transitions. [2020-10-27 18:43:12,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:43:12,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1025 [2020-10-27 18:43:12,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:43:12,166 INFO L225 Difference]: With dead ends: 14950 [2020-10-27 18:43:12,167 INFO L226 Difference]: Without dead ends: 8733 [2020-10-27 18:43:12,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:43:12,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8733 states. [2020-10-27 18:43:12,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8733 to 8282. [2020-10-27 18:43:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8282 states. [2020-10-27 18:43:12,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8282 states to 8282 states and 9191 transitions. [2020-10-27 18:43:12,446 INFO L78 Accepts]: Start accepts. Automaton has 8282 states and 9191 transitions. Word has length 1025 [2020-10-27 18:43:12,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:43:12,447 INFO L481 AbstractCegarLoop]: Abstraction has 8282 states and 9191 transitions. [2020-10-27 18:43:12,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:43:12,447 INFO L276 IsEmpty]: Start isEmpty. Operand 8282 states and 9191 transitions. [2020-10-27 18:43:12,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2020-10-27 18:43:12,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:43:12,481 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:43:12,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:43:12,481 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:43:12,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:43:12,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1073840719, now seen corresponding path program 1 times [2020-10-27 18:43:12,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:43:12,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371201269] [2020-10-27 18:43:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:43:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:13,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:16,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:17,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:17,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1077 [2020-10-27 18:43:17,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:43:17,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 18:43:17,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:43:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 452 [2020-10-27 18:43:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-27 18:43:17,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:17,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:43:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:17,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:17,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:17,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:43:17,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:43:17,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:17,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:43:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:17,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:17,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:43:17,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:17,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:43:17,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:17,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:17,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:43:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:17,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:17,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:17,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:43:17,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:17,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:43:17,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:17,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:17,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:17,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:17,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:17,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 18:43:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:17,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:18,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:18,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:43:18,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 18:43:18,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:18,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:43:18,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:18,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-27 18:43:18,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:18,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-10-27 18:43:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:18,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:18,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:18,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-27 18:43:18,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:18,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-27 18:43:18,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:43:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:43:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-27 18:43:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:18,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:43:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:18,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:18,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:18,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 18:43:18,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:18,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:43:18,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:18,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:43:18,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:43:18,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 18:43:18,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:18,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 747 [2020-10-27 18:43:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:18,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:18,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:43:18,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:18,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 18:43:18,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:43:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:18,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:43:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:18,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:18,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:43:18,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:18,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:43:18,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:18,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:18,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:18,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 486 proven. 297 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2020-10-27 18:43:19,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371201269] [2020-10-27 18:43:19,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:43:19,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:43:19,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564786539] [2020-10-27 18:43:19,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:43:19,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:43:19,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:43:19,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:43:19,642 INFO L87 Difference]: Start difference. First operand 8282 states and 9191 transitions. Second operand 7 states. [2020-10-27 18:43:20,502 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 18:43:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:43:24,890 INFO L93 Difference]: Finished difference Result 23187 states and 26806 transitions. [2020-10-27 18:43:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:43:24,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1053 [2020-10-27 18:43:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:43:24,961 INFO L225 Difference]: With dead ends: 23187 [2020-10-27 18:43:24,961 INFO L226 Difference]: Without dead ends: 14911 [2020-10-27 18:43:24,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 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 18:43:25,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14911 states. [2020-10-27 18:43:25,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14911 to 14057. [2020-10-27 18:43:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2020-10-27 18:43:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 15668 transitions. [2020-10-27 18:43:25,342 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 15668 transitions. Word has length 1053 [2020-10-27 18:43:25,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:43:25,343 INFO L481 AbstractCegarLoop]: Abstraction has 14057 states and 15668 transitions. [2020-10-27 18:43:25,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:43:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 15668 transitions. [2020-10-27 18:43:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2020-10-27 18:43:25,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:43:25,383 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:43:25,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:43:25,383 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:43:25,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:43:25,384 INFO L82 PathProgramCache]: Analyzing trace with hash 398298221, now seen corresponding path program 1 times [2020-10-27 18:43:25,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:43:25,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460066100] [2020-10-27 18:43:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:43:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:25,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:25,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:25,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:26,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:30,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:30,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1109 [2020-10-27 18:43:30,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:43:30,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5184 [2020-10-27 18:43:30,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 514 [2020-10-27 18:43:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:43:30,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:30,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:43:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:30,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:30,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:30,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:43:30,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:43:30,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:30,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:43:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:30,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:30,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:43:30,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:43:30,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:30,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:30,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:43:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:30,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:30,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:30,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:43:30,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:30,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:43:30,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:30,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 18:43:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:31,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:31,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:31,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:43:31,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:31,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 18:43:31,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:43:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-27 18:43:31,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:31,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-10-27 18:43:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:31,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:31,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:43:31,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:31,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 18:43:31,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:43:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:43:31,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:31,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 781 [2020-10-27 18:43:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:32,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:32,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:43:32,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:32,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 18:43:32,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:32,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:32,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:43:32,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:32,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:32,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:43:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:32,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:32,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:32,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:43:32,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:32,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:43:32,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:32,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 548 proven. 272 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2020-10-27 18:43:33,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460066100] [2020-10-27 18:43:33,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:43:33,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:43:33,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035060558] [2020-10-27 18:43:33,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:43:33,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:43:33,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:43:33,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:43:33,093 INFO L87 Difference]: Start difference. First operand 14057 states and 15668 transitions. Second operand 7 states. [2020-10-27 18:43:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:43:38,399 INFO L93 Difference]: Finished difference Result 30822 states and 34513 transitions. [2020-10-27 18:43:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:43:38,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1087 [2020-10-27 18:43:38,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:43:38,450 INFO L225 Difference]: With dead ends: 30822 [2020-10-27 18:43:38,450 INFO L226 Difference]: Without dead ends: 16771 [2020-10-27 18:43:38,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 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 18:43:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16771 states. [2020-10-27 18:43:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16771 to 16426. [2020-10-27 18:43:38,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16426 states. [2020-10-27 18:43:38,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16426 states to 16426 states and 18169 transitions. [2020-10-27 18:43:38,784 INFO L78 Accepts]: Start accepts. Automaton has 16426 states and 18169 transitions. Word has length 1087 [2020-10-27 18:43:38,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:43:38,785 INFO L481 AbstractCegarLoop]: Abstraction has 16426 states and 18169 transitions. [2020-10-27 18:43:38,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:43:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 16426 states and 18169 transitions. [2020-10-27 18:43:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2020-10-27 18:43:38,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:43:38,829 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:43:38,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:43:38,830 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:43:38,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:43:38,830 INFO L82 PathProgramCache]: Analyzing trace with hash 701343247, now seen corresponding path program 1 times [2020-10-27 18:43:38,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:43:38,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337701655] [2020-10-27 18:43:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:43:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:38,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:40,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:43,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:43,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1146 [2020-10-27 18:43:43,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:43:43,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 18:43:43,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 609 [2020-10-27 18:43:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:43:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:44,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:43:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:44,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:44,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:44,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:43:44,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:43:44,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:44,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:43:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:44,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:44,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:44,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:43:44,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:43:44,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:43:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:44,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:44,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:43:44,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:43:44,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:44,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-27 18:43:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:44,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:44,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:43:44,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:44,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 18:43:44,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:44,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:44,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:44,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-27 18:43:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:44,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:44,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:44,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 18:43:44,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:44,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:43:44,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:44,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:44,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:44,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:44,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:44,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-10-27 18:43:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:44,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:44,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:43:44,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:44,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 18:43:44,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:44,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:43:44,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:44,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:43:44,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:44,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 18:43:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:44,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:44,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:43:44,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:44,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 18:43:44,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:43:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:43:44,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:44,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 814 [2020-10-27 18:43:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:44,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:45,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:45,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:43:45,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:45,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 18:43:45,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:43:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:45,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:45,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:43:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:45,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:45,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:45,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:43:45,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:45,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:43:45,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:45,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2488 backedges. 665 proven. 214 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2020-10-27 18:43:45,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337701655] [2020-10-27 18:43:45,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:43:45,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:43:45,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376618583] [2020-10-27 18:43:45,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:43:45,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:43:45,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:43:45,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:43:45,970 INFO L87 Difference]: Start difference. First operand 16426 states and 18169 transitions. Second operand 7 states. [2020-10-27 18:43:50,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:43:50,620 INFO L93 Difference]: Finished difference Result 36573 states and 40584 transitions. [2020-10-27 18:43:50,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:43:50,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1120 [2020-10-27 18:43:50,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:43:50,672 INFO L225 Difference]: With dead ends: 36573 [2020-10-27 18:43:50,672 INFO L226 Difference]: Without dead ends: 20153 [2020-10-27 18:43:50,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:43:50,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20153 states. [2020-10-27 18:43:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20153 to 19469. [2020-10-27 18:43:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19469 states. [2020-10-27 18:43:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19469 states to 19469 states and 21145 transitions. [2020-10-27 18:43:51,247 INFO L78 Accepts]: Start accepts. Automaton has 19469 states and 21145 transitions. Word has length 1120 [2020-10-27 18:43:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:43:51,248 INFO L481 AbstractCegarLoop]: Abstraction has 19469 states and 21145 transitions. [2020-10-27 18:43:51,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:43:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 19469 states and 21145 transitions. [2020-10-27 18:43:51,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1331 [2020-10-27 18:43:51,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:43:51,299 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 6, 6, 6, 6, 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, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:43:51,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:43:51,299 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:43:51,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:43:51,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1492269636, now seen corresponding path program 1 times [2020-10-27 18:43:51,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:43:51,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818861581] [2020-10-27 18:43:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:43:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:51,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:51,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:51,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:56,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:56,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1356 [2020-10-27 18:43:56,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:43:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 18:43:56,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 816 [2020-10-27 18:43:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-27 18:43:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:56,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:43:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:56,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:56,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:43:56,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:56,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:43:56,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:56,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:56,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:56,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:56,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:56,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:43:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:56,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:56,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:43:56,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:56,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:43:56,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:56,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:56,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:43:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:56,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:56,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:43:56,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:56,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:43:56,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:56,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:56,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:56,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:56,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:56,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 18:43:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:56,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:56,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:43:56,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:56,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:43:56,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:56,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:56,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-10-27 18:43:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:56,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:57,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:57,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-27 18:43:57,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:57,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-27 18:43:57,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:43:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 295 [2020-10-27 18:43:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:57,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:43:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:57,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:57,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:57,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 18:43:57,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:57,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:43:57,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:43:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 18:43:57,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:57,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 809 [2020-10-27 18:43:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:57,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:57,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:43:57,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 18:43:57,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:43:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:43:57,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:57,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1024 [2020-10-27 18:43:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:57,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:57,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:43:57,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 18:43:57,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:43:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:57,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:43:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:57,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:57,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:57,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:43:57,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:57,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:43:57,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:57,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 741 proven. 217 refuted. 0 times theorem prover too weak. 1643 trivial. 0 not checked. [2020-10-27 18:44:00,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818861581] [2020-10-27 18:44:00,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:44:00,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:44:00,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849273321] [2020-10-27 18:44:00,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:44:00,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:00,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:44:00,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:44:00,124 INFO L87 Difference]: Start difference. First operand 19469 states and 21145 transitions. Second operand 7 states. [2020-10-27 18:44:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:44:05,251 INFO L93 Difference]: Finished difference Result 39283 states and 42698 transitions. [2020-10-27 18:44:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:44:05,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1330 [2020-10-27 18:44:05,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:44:05,299 INFO L225 Difference]: With dead ends: 39283 [2020-10-27 18:44:05,300 INFO L226 Difference]: Without dead ends: 19820 [2020-10-27 18:44:05,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:44:05,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19820 states. [2020-10-27 18:44:05,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19820 to 19808. [2020-10-27 18:44:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19808 states. [2020-10-27 18:44:05,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19808 states to 19808 states and 21445 transitions. [2020-10-27 18:44:05,678 INFO L78 Accepts]: Start accepts. Automaton has 19808 states and 21445 transitions. Word has length 1330 [2020-10-27 18:44:05,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:44:05,680 INFO L481 AbstractCegarLoop]: Abstraction has 19808 states and 21445 transitions. [2020-10-27 18:44:05,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:44:05,680 INFO L276 IsEmpty]: Start isEmpty. Operand 19808 states and 21445 transitions. [2020-10-27 18:44:05,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1566 [2020-10-27 18:44:05,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:05,726 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 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, 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, 6, 6, 6, 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, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:44:05,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:44:05,726 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:05,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1205528476, now seen corresponding path program 1 times [2020-10-27 18:44:05,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:05,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680244667] [2020-10-27 18:44:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:06,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:11,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:11,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1595 [2020-10-27 18:44:11,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:44:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-27 18:44:11,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1058 [2020-10-27 18:44:11,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:44:11,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:11,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:11,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:11,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:11,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:11,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:11,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:44:11,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:11,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:11,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:11,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:11,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:11,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:44:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:11,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:11,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:11,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:44:11,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:11,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:44:11,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:11,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:11,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:11,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:11,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:11,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:44:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:11,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:11,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:11,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:44:11,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:44:11,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:11,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 18:44:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:11,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:11,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:11,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-27 18:44:11,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:11,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 18:44:11,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:11,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:11,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:44:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:11,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:11,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 18:44:11,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:11,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:44:11,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:11,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:11,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2020-10-27 18:44:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:11,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:11,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 18:44:11,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:11,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 18:44:11,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:11,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:11,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:11,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:11,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:11,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2020-10-27 18:44:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:11,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:12,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:12,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:44:12,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:12,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 18:44:12,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:12,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:12,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:12,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:12,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:12,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-27 18:44:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:12,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:12,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:12,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:44:12,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:44:12,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:44:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:12,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1044 [2020-10-27 18:44:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:12,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:12,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:12,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:44:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 18:44:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:44:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:44:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:12,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1259 [2020-10-27 18:44:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:12,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:12,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:44:12,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:12,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 18:44:12,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:44:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:12,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:12,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:44:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:12,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:12,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:12,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:44:12,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:12,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:44:12,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:12,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3851 backedges. 953 proven. 214 refuted. 0 times theorem prover too weak. 2684 trivial. 0 not checked. [2020-10-27 18:44:14,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680244667] [2020-10-27 18:44:14,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:44:14,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:44:14,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952679797] [2020-10-27 18:44:14,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:44:14,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:14,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:44:14,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:44:14,449 INFO L87 Difference]: Start difference. First operand 19808 states and 21445 transitions. Second operand 7 states. [2020-10-27 18:44:21,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:44:21,212 INFO L93 Difference]: Finished difference Result 40964 states and 44312 transitions. [2020-10-27 18:44:21,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:44:21,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1565 [2020-10-27 18:44:21,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:44:21,266 INFO L225 Difference]: With dead ends: 40964 [2020-10-27 18:44:21,266 INFO L226 Difference]: Without dead ends: 21162 [2020-10-27 18:44:21,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:44:21,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21162 states. [2020-10-27 18:44:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21162 to 19134. [2020-10-27 18:44:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19134 states. [2020-10-27 18:44:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19134 states to 19134 states and 20499 transitions. [2020-10-27 18:44:21,701 INFO L78 Accepts]: Start accepts. Automaton has 19134 states and 20499 transitions. Word has length 1565 [2020-10-27 18:44:21,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:44:21,702 INFO L481 AbstractCegarLoop]: Abstraction has 19134 states and 20499 transitions. [2020-10-27 18:44:21,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:44:21,702 INFO L276 IsEmpty]: Start isEmpty. Operand 19134 states and 20499 transitions. [2020-10-27 18:44:21,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1667 [2020-10-27 18:44:21,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:21,750 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:44:21,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:44:21,751 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:21,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:21,752 INFO L82 PathProgramCache]: Analyzing trace with hash -276647520, now seen corresponding path program 1 times [2020-10-27 18:44:21,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:21,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748523646] [2020-10-27 18:44:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:22,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:22,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:22,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:26,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:26,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:26,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1696 [2020-10-27 18:44:26,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:44:26,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 18:44:26,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:44:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 816 [2020-10-27 18:44:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 341 [2020-10-27 18:44:26,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:27,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:27,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:27,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:27,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:27,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:44:27,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:27,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:27,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:44:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:27,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:27,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:44:27,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:44:27,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:27,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:44:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:27,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:27,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:44:27,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:44:27,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:27,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 18:44:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:27,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:27,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:27,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:44:27,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:27,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:44:27,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:27,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:27,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:27,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:27,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:27,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-10-27 18:44:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:27,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:27,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:27,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-27 18:44:27,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:27,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-27 18:44:27,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 295 [2020-10-27 18:44:27,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:28,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:44:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:28,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:28,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:28,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 18:44:28,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:28,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:44:28,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 18:44:28,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 18:44:28,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 809 [2020-10-27 18:44:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:28,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:28,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:29,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:29,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-27 18:44:29,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:44:29,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1654 [2020-10-27 18:44:29,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:44:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:44:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 339 [2020-10-27 18:44:29,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:44:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:30,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:30,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:30,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 18:44:30,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:30,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 18:44:30,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:30,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:44:30,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:30,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 18:44:30,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1145 [2020-10-27 18:44:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:30,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:31,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:31,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:44:31,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:31,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 18:44:31,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:44:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1360 [2020-10-27 18:44:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:31,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:31,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:31,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:44:31,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:31,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 18:44:31,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:44:31,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:31,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:44:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:31,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:31,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:44:31,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:31,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:44:31,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:31,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:31,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3923 backedges. 881 proven. 515 refuted. 0 times theorem prover too weak. 2527 trivial. 0 not checked. [2020-10-27 18:44:34,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748523646] [2020-10-27 18:44:34,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:44:34,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 18:44:34,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179173612] [2020-10-27 18:44:34,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 18:44:34,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:34,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 18:44:34,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:44:34,715 INFO L87 Difference]: Start difference. First operand 19134 states and 20499 transitions. Second operand 9 states. [2020-10-27 18:44:40,291 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-27 18:44:41,715 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-27 18:44:42,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:44:42,639 INFO L93 Difference]: Finished difference Result 37929 states and 40657 transitions. [2020-10-27 18:44:42,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 18:44:42,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1666 [2020-10-27 18:44:42,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:44:42,683 INFO L225 Difference]: With dead ends: 37929 [2020-10-27 18:44:42,684 INFO L226 Difference]: Without dead ends: 18801 [2020-10-27 18:44:42,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-27 18:44:42,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18801 states. [2020-10-27 18:44:43,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18801 to 18795. [2020-10-27 18:44:43,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18795 states. [2020-10-27 18:44:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18795 states to 18795 states and 20137 transitions. [2020-10-27 18:44:43,083 INFO L78 Accepts]: Start accepts. Automaton has 18795 states and 20137 transitions. Word has length 1666 [2020-10-27 18:44:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:44:43,085 INFO L481 AbstractCegarLoop]: Abstraction has 18795 states and 20137 transitions. [2020-10-27 18:44:43,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 18:44:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 18795 states and 20137 transitions. [2020-10-27 18:44:43,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1719 [2020-10-27 18:44:43,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:43,140 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 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, 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, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:44:43,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 18:44:43,140 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:43,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:43,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1422602866, now seen corresponding path program 1 times [2020-10-27 18:44:43,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:43,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589317265] [2020-10-27 18:44:43,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:44,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking...