/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/Problem03_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:49:22,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:49:22,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:49:22,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:49:22,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:49:22,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:49:22,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:49:22,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:49:22,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:49:22,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:49:22,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:49:22,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:49:22,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:49:22,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:49:22,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:49:22,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:49:22,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:49:22,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:49:22,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:49:22,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:49:22,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:49:22,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:49:22,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:49:22,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:49:22,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:49:22,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:49:22,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:49:22,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:49:22,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:49:22,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:49:22,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:49:22,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:49:22,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:49:22,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:49:22,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:49:22,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:49:22,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:49:22,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:49:22,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:49:22,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:49:22,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:49:22,908 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 15:49:22,955 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:49:22,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:49:22,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:49:22,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:49:22,960 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:49:22,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:49:22,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:49:22,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:49:22,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:49:22,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:49:22,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:49:22,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:49:22,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:49:22,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:49:22,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:49:22,963 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:49:22,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:49:22,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:49:22,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:49:22,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:49:22,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:49:22,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:49:22,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:49:22,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:49:22,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:49:22,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:49:22,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:49:22,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:49:22,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:49:22,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:49:23,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:49:23,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:49:23,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:49:23,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:49:23,439 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:49:23,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52.c [2020-10-27 15:49:23,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ee6e880c/a095cbb9433249768d1c322486783ae3/FLAG065eaf0e9 [2020-10-27 15:49:24,456 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:49:24,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label52.c [2020-10-27 15:49:24,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ee6e880c/a095cbb9433249768d1c322486783ae3/FLAG065eaf0e9 [2020-10-27 15:49:24,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ee6e880c/a095cbb9433249768d1c322486783ae3 [2020-10-27 15:49:24,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:49:24,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:49:24,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:49:24,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:49:24,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:49:24,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:49:24" (1/1) ... [2020-10-27 15:49:24,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e09aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:49:24, skipping insertion in model container [2020-10-27 15:49:24,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:49:24" (1/1) ... [2020-10-27 15:49:24,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:49:24,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:49:25,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:49:25,435 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:49:25,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:49:25,691 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:49:25,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:49:25 WrapperNode [2020-10-27 15:49:25,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:49:25,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:49:25,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:49:25,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:49:25,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:49:25" (1/1) ... [2020-10-27 15:49:25,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:49:25" (1/1) ... [2020-10-27 15:49:25,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:49:25" (1/1) ... [2020-10-27 15:49:25,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:49:25" (1/1) ... [2020-10-27 15:49:25,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:49:25" (1/1) ... [2020-10-27 15:49:25,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:49:25" (1/1) ... [2020-10-27 15:49:25,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:49:25" (1/1) ... [2020-10-27 15:49:25,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:49:25,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:49:25,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:49:25,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:49:25,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:49:25" (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 15:49:25,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:49:25,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:49:25,968 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:49:25,968 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:49:25,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:49:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:49:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:49:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:49:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:49:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:49:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:49:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:49:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:49:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:49:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:49:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:49:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:49:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:49:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:49:28,311 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:49:28,312 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:49:28,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:49:28 BoogieIcfgContainer [2020-10-27 15:49:28,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:49:28,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:49:28,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:49:28,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:49:28,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:49:24" (1/3) ... [2020-10-27 15:49:28,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8761f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:49:28, skipping insertion in model container [2020-10-27 15:49:28,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:49:25" (2/3) ... [2020-10-27 15:49:28,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8761f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:49:28, skipping insertion in model container [2020-10-27 15:49:28,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:49:28" (3/3) ... [2020-10-27 15:49:28,329 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label52.c [2020-10-27 15:49:28,343 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:49:28,350 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:49:28,366 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:49:28,414 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:49:28,415 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:49:28,415 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:49:28,415 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:49:28,415 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:49:28,416 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:49:28,416 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:49:28,416 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:49:28,455 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-27 15:49:28,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 15:49:28,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:49:28,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:28,479 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:49:28,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:49:28,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1425330932, now seen corresponding path program 1 times [2020-10-27 15:49:28,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:49:28,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036967811] [2020-10-27 15:49:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:49:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:29,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:29,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:32,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:32,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 15:49:32,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:49:32,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3676 [2020-10-27 15:49:32,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:32,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:49:32,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:49:32,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 15:49:32,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:49:33,085 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:49:33,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:49:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:33,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:33,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:33,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:49:33,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 15:49:33,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:49:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:49:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:33,252 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 15:49:33,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036967811] [2020-10-27 15:49:33,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:49:33,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 15:49:33,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877498758] [2020-10-27 15:49:33,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:49:33,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:49:33,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:49:33,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:49:33,287 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-27 15:49:33,561 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:49:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:49:37,077 INFO L93 Difference]: Finished difference Result 891 states and 1544 transitions. [2020-10-27 15:49:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:49:37,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-27 15:49:37,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:49:37,098 INFO L225 Difference]: With dead ends: 891 [2020-10-27 15:49:37,099 INFO L226 Difference]: Without dead ends: 483 [2020-10-27 15:49:37,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:49:37,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-27 15:49:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 477. [2020-10-27 15:49:37,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-27 15:49:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 725 transitions. [2020-10-27 15:49:37,218 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 725 transitions. Word has length 153 [2020-10-27 15:49:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:49:37,222 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 725 transitions. [2020-10-27 15:49:37,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:49:37,222 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 725 transitions. [2020-10-27 15:49:37,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 15:49:37,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:49:37,238 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 15:49:37,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:49:37,239 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:49:37,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:49:37,240 INFO L82 PathProgramCache]: Analyzing trace with hash 770358157, now seen corresponding path program 1 times [2020-10-27 15:49:37,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:49:37,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722416917] [2020-10-27 15:49:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:49:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:37,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:39,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:39,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 15:49:39,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:49:39,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2460 [2020-10-27 15:49:39,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:49:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:49:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 15:49:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:40,179 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:49:40,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:49:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:40,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:40,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:40,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:49:40,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:40,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:49:40,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:40,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:40,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:40,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:40,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:40,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:49:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:40,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:40,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:49:40,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 15:49:40,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:49:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 15:49:40,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:49:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:49:40,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722416917] [2020-10-27 15:49:40,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:49:40,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 15:49:40,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580653432] [2020-10-27 15:49:40,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 15:49:40,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:49:40,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 15:49:40,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:49:40,460 INFO L87 Difference]: Start difference. First operand 477 states and 725 transitions. Second operand 6 states. [2020-10-27 15:49:40,856 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:49:41,385 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:49:46,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:49:46,077 INFO L93 Difference]: Finished difference Result 1792 states and 2785 transitions. [2020-10-27 15:49:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 15:49:46,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-10-27 15:49:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:49:46,096 INFO L225 Difference]: With dead ends: 1792 [2020-10-27 15:49:46,097 INFO L226 Difference]: Without dead ends: 1321 [2020-10-27 15:49:46,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:49:46,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-27 15:49:46,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1315. [2020-10-27 15:49:46,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2020-10-27 15:49:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1846 transitions. [2020-10-27 15:49:46,218 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1846 transitions. Word has length 165 [2020-10-27 15:49:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:49:46,220 INFO L481 AbstractCegarLoop]: Abstraction has 1315 states and 1846 transitions. [2020-10-27 15:49:46,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 15:49:46,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1846 transitions. [2020-10-27 15:49:46,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-27 15:49:46,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:49:46,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:46,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:49:46,231 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:49:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:49:46,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1932272769, now seen corresponding path program 1 times [2020-10-27 15:49:46,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:49:46,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598294465] [2020-10-27 15:49:46,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:49:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:46,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:46,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:49,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:49,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 15:49:49,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:49:49,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3247 [2020-10-27 15:49:49,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:49:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 15:49:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 15:49:49,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:49,930 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:49:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:49:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:49,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:49,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:49,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:49:49,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:49,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:49:49,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:49,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:50,092 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:49:50,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:49:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:50,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:50,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:50,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 15:49:50,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:50,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 15:49:50,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:49:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 15:49:50,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:49:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:49:50,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598294465] [2020-10-27 15:49:50,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:49:50,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:49:50,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762087018] [2020-10-27 15:49:50,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:49:50,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:49:50,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:49:50,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:49:50,309 INFO L87 Difference]: Start difference. First operand 1315 states and 1846 transitions. Second operand 5 states. [2020-10-27 15:49:50,688 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:49:53,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:49:53,612 INFO L93 Difference]: Finished difference Result 3889 states and 5568 transitions. [2020-10-27 15:49:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:49:53,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-27 15:49:53,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:49:53,630 INFO L225 Difference]: With dead ends: 3889 [2020-10-27 15:49:53,631 INFO L226 Difference]: Without dead ends: 2580 [2020-10-27 15:49:53,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:49:53,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2020-10-27 15:49:53,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2575. [2020-10-27 15:49:53,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-10-27 15:49:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3503 transitions. [2020-10-27 15:49:53,742 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3503 transitions. Word has length 180 [2020-10-27 15:49:53,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:49:53,743 INFO L481 AbstractCegarLoop]: Abstraction has 2575 states and 3503 transitions. [2020-10-27 15:49:53,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:49:53,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3503 transitions. [2020-10-27 15:49:53,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-27 15:49:53,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:49:53,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:53,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:49:53,753 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:49:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:49:53,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1618362240, now seen corresponding path program 1 times [2020-10-27 15:49:53,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:49:53,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600606258] [2020-10-27 15:49:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:49:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:53,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:54,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:54,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 15:49:54,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:54,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 856 [2020-10-27 15:49:54,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:49:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:49:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 15:49:54,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:54,966 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:49:54,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:49:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:54,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:55,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:55,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:49:55,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:55,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 15:49:55,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:49:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:49:55,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:55,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:49:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:55,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:55,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:55,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:49:55,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:55,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-27 15:49:55,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:49:55,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:49:55,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 15:49:55,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:49:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:49:55,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600606258] [2020-10-27 15:49:55,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:49:55,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 15:49:55,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632568982] [2020-10-27 15:49:55,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:49:55,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:49:55,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:49:55,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:49:55,513 INFO L87 Difference]: Start difference. First operand 2575 states and 3503 transitions. Second operand 7 states. [2020-10-27 15:49:55,805 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 15:49:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:49:59,405 INFO L93 Difference]: Finished difference Result 7737 states and 10763 transitions. [2020-10-27 15:49:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 15:49:59,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-10-27 15:49:59,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:49:59,450 INFO L225 Difference]: With dead ends: 7737 [2020-10-27 15:49:59,451 INFO L226 Difference]: Without dead ends: 5168 [2020-10-27 15:49:59,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:49:59,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5168 states. [2020-10-27 15:49:59,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5168 to 5157. [2020-10-27 15:49:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5157 states. [2020-10-27 15:49:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 7142 transitions. [2020-10-27 15:49:59,649 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 7142 transitions. Word has length 187 [2020-10-27 15:49:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:49:59,649 INFO L481 AbstractCegarLoop]: Abstraction has 5157 states and 7142 transitions. [2020-10-27 15:49:59,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:49:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 7142 transitions. [2020-10-27 15:49:59,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-27 15:49:59,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:49:59,669 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:59,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:49:59,670 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:49:59,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:49:59,670 INFO L82 PathProgramCache]: Analyzing trace with hash -601135861, now seen corresponding path program 1 times [2020-10-27 15:49:59,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:49:59,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093622364] [2020-10-27 15:49:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:49:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:59,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:00,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:04,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:04,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 15:50:04,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:50:04,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 15:50:04,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:04,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:04,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-27 15:50:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 15:50:04,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:05,103 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:50:05,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:50:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:05,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:05,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:50:05,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:05,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:50:05,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:05,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:05,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:05,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:50:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:05,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:05,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:05,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 15:50:05,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 15:50:05,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:05,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:05,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 15:50:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:05,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:05,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:05,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 15:50:05,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:05,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 15:50:05,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:50:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:50:05,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 15:50:05,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093622364] [2020-10-27 15:50:05,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:50:05,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:50:05,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41964628] [2020-10-27 15:50:05,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:50:05,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:50:05,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:50:05,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:50:05,474 INFO L87 Difference]: Start difference. First operand 5157 states and 7142 transitions. Second operand 5 states. [2020-10-27 15:50:05,816 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:50:09,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:50:09,432 INFO L93 Difference]: Finished difference Result 15402 states and 21986 transitions. [2020-10-27 15:50:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:50:09,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-27 15:50:09,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:50:09,500 INFO L225 Difference]: With dead ends: 15402 [2020-10-27 15:50:09,500 INFO L226 Difference]: Without dead ends: 10251 [2020-10-27 15:50:09,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:50:09,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10251 states. [2020-10-27 15:50:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10251 to 10215. [2020-10-27 15:50:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10215 states. [2020-10-27 15:50:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10215 states to 10215 states and 14305 transitions. [2020-10-27 15:50:10,002 INFO L78 Accepts]: Start accepts. Automaton has 10215 states and 14305 transitions. Word has length 206 [2020-10-27 15:50:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:50:10,003 INFO L481 AbstractCegarLoop]: Abstraction has 10215 states and 14305 transitions. [2020-10-27 15:50:10,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:50:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 10215 states and 14305 transitions. [2020-10-27 15:50:10,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-27 15:50:10,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:50:10,038 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 15:50:10,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:50:10,039 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:50:10,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:50:10,040 INFO L82 PathProgramCache]: Analyzing trace with hash -2036683715, now seen corresponding path program 1 times [2020-10-27 15:50:10,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:50:10,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740568986] [2020-10-27 15:50:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:50:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:12,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:12,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 15:50:12,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:50:12,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2345 [2020-10-27 15:50:12,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:12,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:12,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-27 15:50:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 15:50:12,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:12,803 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:50:12,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:50:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:12,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:12,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:50:12,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:12,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:50:12,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:12,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:12,947 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:50:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:50:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:13,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:13,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:13,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 15:50:13,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:13,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 15:50:13,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:50:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 15:50:13,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:50:13,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740568986] [2020-10-27 15:50:13,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:50:13,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:50:13,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663179774] [2020-10-27 15:50:13,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:50:13,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:50:13,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:50:13,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:50:13,355 INFO L87 Difference]: Start difference. First operand 10215 states and 14305 transitions. Second operand 5 states. [2020-10-27 15:50:13,795 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:50:17,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:50:17,549 INFO L93 Difference]: Finished difference Result 28633 states and 41182 transitions. [2020-10-27 15:50:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:50:17,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-27 15:50:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:50:17,651 INFO L225 Difference]: With dead ends: 28633 [2020-10-27 15:50:17,651 INFO L226 Difference]: Without dead ends: 18424 [2020-10-27 15:50:17,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:50:17,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18424 states. [2020-10-27 15:50:18,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18424 to 18405. [2020-10-27 15:50:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18405 states. [2020-10-27 15:50:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18405 states to 18405 states and 25836 transitions. [2020-10-27 15:50:18,364 INFO L78 Accepts]: Start accepts. Automaton has 18405 states and 25836 transitions. Word has length 220 [2020-10-27 15:50:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:50:18,364 INFO L481 AbstractCegarLoop]: Abstraction has 18405 states and 25836 transitions. [2020-10-27 15:50:18,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:50:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 18405 states and 25836 transitions. [2020-10-27 15:50:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-27 15:50:18,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:50:18,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 15:50:18,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:50:18,437 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:50:18,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:50:18,439 INFO L82 PathProgramCache]: Analyzing trace with hash -780241628, now seen corresponding path program 1 times [2020-10-27 15:50:18,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:50:18,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293326860] [2020-10-27 15:50:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:50:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:18,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:19,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:19,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:23,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:23,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-27 15:50:23,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:50:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4865 [2020-10-27 15:50:23,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 15:50:23,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 15:50:23,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:23,727 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:50:23,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:50:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:23,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:23,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:23,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:50:23,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:23,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:50:23,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:23,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:23,862 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:50:23,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:50:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:23,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:23,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:23,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 15:50:23,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:23,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:50:23,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:23,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:23,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:23,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:23,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 15:50:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:23,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:23,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 15:50:23,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:23,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 15:50:23,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:50:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 15:50:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 15:50:24,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293326860] [2020-10-27 15:50:24,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:50:24,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:50:24,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195508411] [2020-10-27 15:50:24,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:50:24,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:50:24,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:50:24,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:50:24,102 INFO L87 Difference]: Start difference. First operand 18405 states and 25836 transitions. Second operand 5 states. [2020-10-27 15:50:24,480 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:50:27,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:50:27,946 INFO L93 Difference]: Finished difference Result 49404 states and 70556 transitions. [2020-10-27 15:50:27,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:50:27,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-27 15:50:27,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:50:28,117 INFO L225 Difference]: With dead ends: 49404 [2020-10-27 15:50:28,117 INFO L226 Difference]: Without dead ends: 31005 [2020-10-27 15:50:28,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:50:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31005 states. [2020-10-27 15:50:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31005 to 30549. [2020-10-27 15:50:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30549 states. [2020-10-27 15:50:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30549 states to 30549 states and 43578 transitions. [2020-10-27 15:50:29,192 INFO L78 Accepts]: Start accepts. Automaton has 30549 states and 43578 transitions. Word has length 229 [2020-10-27 15:50:29,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:50:29,192 INFO L481 AbstractCegarLoop]: Abstraction has 30549 states and 43578 transitions. [2020-10-27 15:50:29,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:50:29,193 INFO L276 IsEmpty]: Start isEmpty. Operand 30549 states and 43578 transitions. [2020-10-27 15:50:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-27 15:50:29,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:50:29,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:50:29,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:50:29,284 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:50:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:50:29,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1852717699, now seen corresponding path program 1 times [2020-10-27 15:50:29,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:50:29,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685893888] [2020-10-27 15:50:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:50:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:29,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:30,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:30,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-27 15:50:30,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:30,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-27 15:50:30,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:50:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:50:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 15:50:30,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:30,746 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:50:30,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:50:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:30,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:30,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:30,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:50:30,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:30,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:50:30,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:30,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:50:30,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:30,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:50:30,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:30,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:50:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:30,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:31,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:31,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 15:50:31,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:31,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 15:50:31,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:50:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 15:50:31,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:50:31,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685893888] [2020-10-27 15:50:31,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:50:31,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 15:50:31,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597681346] [2020-10-27 15:50:31,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:50:31,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:50:31,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:50:31,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:50:31,153 INFO L87 Difference]: Start difference. First operand 30549 states and 43578 transitions. Second operand 7 states. [2020-10-27 15:50:31,410 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:50:32,095 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:50:35,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:50:35,229 INFO L93 Difference]: Finished difference Result 61344 states and 89477 transitions. [2020-10-27 15:50:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:50:35,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-27 15:50:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:50:35,368 INFO L225 Difference]: With dead ends: 61344 [2020-10-27 15:50:35,368 INFO L226 Difference]: Without dead ends: 30801 [2020-10-27 15:50:35,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:50:35,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30801 states. [2020-10-27 15:50:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30801 to 30462. [2020-10-27 15:50:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30462 states. [2020-10-27 15:50:36,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30462 states to 30462 states and 39695 transitions. [2020-10-27 15:50:36,221 INFO L78 Accepts]: Start accepts. Automaton has 30462 states and 39695 transitions. Word has length 233 [2020-10-27 15:50:36,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:50:36,221 INFO L481 AbstractCegarLoop]: Abstraction has 30462 states and 39695 transitions. [2020-10-27 15:50:36,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:50:36,221 INFO L276 IsEmpty]: Start isEmpty. Operand 30462 states and 39695 transitions. [2020-10-27 15:50:36,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-27 15:50:36,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:50:36,514 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 15:50:36,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:50:36,515 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:50:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:50:36,516 INFO L82 PathProgramCache]: Analyzing trace with hash 539426225, now seen corresponding path program 1 times [2020-10-27 15:50:36,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:50:36,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671752104] [2020-10-27 15:50:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:50:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:36,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:37,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:37,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:40,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:41,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:41,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-27 15:50:41,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 15:50:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-27 15:50:41,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 15:50:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 15:50:41,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:50:42,156 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:50:42,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:50:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:42,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:42,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:42,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:50:42,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:42,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:50:42,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:42,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:42,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:42,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:42,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:50:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:42,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:42,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:42,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:50:42,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:42,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:50:42,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:42,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:42,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:42,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:50:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:42,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:42,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:50:42,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:42,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:50:42,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:42,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:42,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 15:50:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:42,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:42,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:42,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:50:42,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:42,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 15:50:42,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:50:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:50:42,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:42,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 15:50:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:42,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:42,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 15:50:42,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:42,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-27 15:50:42,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:50:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 15:50:42,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-27 15:50:42,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671752104] [2020-10-27 15:50:42,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:50:42,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:50:42,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473341465] [2020-10-27 15:50:42,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:50:42,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:50:42,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:50:42,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:50:42,989 INFO L87 Difference]: Start difference. First operand 30462 states and 39695 transitions. Second operand 7 states. [2020-10-27 15:50:43,360 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 15:50:45,277 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:50:49,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:50:49,700 INFO L93 Difference]: Finished difference Result 67861 states and 95433 transitions. [2020-10-27 15:50:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:50:49,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-27 15:50:49,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:50:49,895 INFO L225 Difference]: With dead ends: 67861 [2020-10-27 15:50:49,895 INFO L226 Difference]: Without dead ends: 37405 [2020-10-27 15:50:49,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:50:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37405 states. [2020-10-27 15:50:51,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37405 to 36419. [2020-10-27 15:50:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36419 states. [2020-10-27 15:50:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36419 states to 36419 states and 47514 transitions. [2020-10-27 15:50:51,265 INFO L78 Accepts]: Start accepts. Automaton has 36419 states and 47514 transitions. Word has length 279 [2020-10-27 15:50:51,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:50:51,266 INFO L481 AbstractCegarLoop]: Abstraction has 36419 states and 47514 transitions. [2020-10-27 15:50:51,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:50:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 36419 states and 47514 transitions. [2020-10-27 15:50:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-27 15:50:51,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:50:51,342 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 15:50:51,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:50:51,343 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:50:51,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:50:51,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1214506222, now seen corresponding path program 1 times [2020-10-27 15:50:51,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:50:51,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687655383] [2020-10-27 15:50:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:50:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:51,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:51,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:51,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:52,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:54,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:56,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:56,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-27 15:50:56,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:50:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 15:50:56,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:50:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-27 15:50:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 15:50:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:56,771 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:50:56,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:50:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:56,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:56,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:50:56,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:56,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:50:56,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:56,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:56,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:50:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:56,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:56,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:50:56,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:56,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:50:56,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:56,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:50:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:56,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:56,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:50:56,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:56,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 15:50:56,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:56,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:56,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 15:50:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:56,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:56,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:56,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:50:56,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:56,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:50:56,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:50:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 15:50:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:56,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 15:50:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:57,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:57,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:57,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:50:57,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:57,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 15:50:57,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:50:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:50:57,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:57,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 15:50:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:57,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:57,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:57,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 15:50:57,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-27 15:50:57,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:50:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 15:50:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 183 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 15:50:57,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687655383] [2020-10-27 15:50:57,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:50:57,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:50:57,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944717487] [2020-10-27 15:50:57,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:50:57,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:50:57,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:50:57,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:50:57,692 INFO L87 Difference]: Start difference. First operand 36419 states and 47514 transitions. Second operand 7 states. [2020-10-27 15:50:58,104 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 15:50:58,720 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:51:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:51:04,584 INFO L93 Difference]: Finished difference Result 85421 states and 118815 transitions. [2020-10-27 15:51:04,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:51:04,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2020-10-27 15:51:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:51:04,893 INFO L225 Difference]: With dead ends: 85421 [2020-10-27 15:51:04,893 INFO L226 Difference]: Without dead ends: 50717 [2020-10-27 15:51:04,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:51:05,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50717 states. [2020-10-27 15:51:06,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50717 to 49592. [2020-10-27 15:51:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49592 states. [2020-10-27 15:51:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49592 states to 49592 states and 64397 transitions. [2020-10-27 15:51:06,718 INFO L78 Accepts]: Start accepts. Automaton has 49592 states and 64397 transitions. Word has length 289 [2020-10-27 15:51:06,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:51:06,719 INFO L481 AbstractCegarLoop]: Abstraction has 49592 states and 64397 transitions. [2020-10-27 15:51:06,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:51:06,719 INFO L276 IsEmpty]: Start isEmpty. Operand 49592 states and 64397 transitions. [2020-10-27 15:51:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-27 15:51:06,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:51:06,840 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:06,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:51:06,841 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:51:06,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:51:06,842 INFO L82 PathProgramCache]: Analyzing trace with hash 871709286, now seen corresponding path program 1 times [2020-10-27 15:51:06,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:51:06,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741657500] [2020-10-27 15:51:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:51:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:06,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:07,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:07,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:07,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:07,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:07,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:10,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:11,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:11,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-27 15:51:11,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 15:51:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 15:51:11,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:51:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 15:51:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 15:51:11,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:12,237 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:51:12,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:51:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:12,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:12,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:51:12,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:51:12,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:51:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:51:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:51:12,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:12,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:51:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:12,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:12,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:51:12,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:12,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:51:12,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:51:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:51:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:51:12,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:12,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:51:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:12,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:12,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:51:12,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:12,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 15:51:12,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:51:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:51:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:51:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 15:51:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:12,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:12,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 15:51:12,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:12,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:51:12,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:12,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:51:12,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:51:12,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:51:12,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 15:51:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:12,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:12,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:12,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 15:51:12,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:12,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 15:51:12,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:51:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:51:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:51:12,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 15:51:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:12,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:12,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:12,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 15:51:12,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:12,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 15:51:12,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:12,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:51:12,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:51:12,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 15:51:12,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:12,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 15:51:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:12,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:12,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:12,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:51:12,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:12,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 15:51:12,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:51:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 15:51:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:51:12,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 219 proven. 33 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-27 15:51:12,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741657500] [2020-10-27 15:51:12,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:51:12,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:51:12,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867975237] [2020-10-27 15:51:12,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:51:12,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:51:12,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:51:12,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:51:12,894 INFO L87 Difference]: Start difference. First operand 49592 states and 64397 transitions. Second operand 7 states. [2020-10-27 15:51:13,395 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:51:13,785 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:51:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:51:20,729 INFO L93 Difference]: Finished difference Result 173324 states and 241319 transitions. [2020-10-27 15:51:20,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:51:20,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-27 15:51:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:51:21,715 INFO L225 Difference]: With dead ends: 173324 [2020-10-27 15:51:21,715 INFO L226 Difference]: Without dead ends: 129080 [2020-10-27 15:51:21,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:51:21,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129080 states. [2020-10-27 15:51:25,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129080 to 129000. [2020-10-27 15:51:25,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129000 states. [2020-10-27 15:51:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129000 states to 129000 states and 178792 transitions. [2020-10-27 15:51:26,592 INFO L78 Accepts]: Start accepts. Automaton has 129000 states and 178792 transitions. Word has length 300 [2020-10-27 15:51:26,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:51:26,592 INFO L481 AbstractCegarLoop]: Abstraction has 129000 states and 178792 transitions. [2020-10-27 15:51:26,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:51:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 129000 states and 178792 transitions. [2020-10-27 15:51:27,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 15:51:27,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:51:27,093 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-27 15:51:27,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:51:27,094 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:51:27,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:51:27,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2100994075, now seen corresponding path program 1 times [2020-10-27 15:51:27,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:51:27,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013889904] [2020-10-27 15:51:27,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:51:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:27,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:27,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:29,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:29,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:29,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:32,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:32,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:32,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:32,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-27 15:51:32,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 15:51:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-27 15:51:32,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:51:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 15:51:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 15:51:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:32,569 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:51:32,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:51:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:32,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:32,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:32,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:51:32,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:51:32,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:51:32,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:51:32,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:51:32,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:32,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:51:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:32,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:32,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:51:32,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:32,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:51:32,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:32,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:51:32,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:51:32,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:51:32,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:32,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:51:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:32,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:32,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:51:32,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:32,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 15:51:32,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:32,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:51:32,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:51:32,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:51:32,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:51:32,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 15:51:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:32,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:32,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:51:32,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:51:32,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 15:51:32,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:51:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 15:51:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:51:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:32,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 15:51:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:32,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:32,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:32,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:32,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 15:51:32,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:51:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 15:51:32,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:51:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:51:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:51:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:33,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 15:51:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:33,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:33,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:33,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 15:51:33,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 15:51:33,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:51:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 15:51:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:51:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 175 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-27 15:51:33,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013889904] [2020-10-27 15:51:33,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:51:33,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 15:51:33,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422628532] [2020-10-27 15:51:33,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 15:51:33,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:51:33,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 15:51:33,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:51:33,228 INFO L87 Difference]: Start difference. First operand 129000 states and 178792 transitions. Second operand 6 states. [2020-10-27 15:51:33,503 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:51:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:51:38,517 INFO L93 Difference]: Finished difference Result 248749 states and 340632 transitions. [2020-10-27 15:51:38,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:51:38,518 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 309 [2020-10-27 15:51:38,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:51:39,196 INFO L225 Difference]: With dead ends: 248749 [2020-10-27 15:51:39,196 INFO L226 Difference]: Without dead ends: 129048 [2020-10-27 15:51:39,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:51:39,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129048 states. [2020-10-27 15:51:43,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129048 to 128990. [2020-10-27 15:51:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128990 states. [2020-10-27 15:51:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128990 states to 128990 states and 178621 transitions. [2020-10-27 15:51:43,682 INFO L78 Accepts]: Start accepts. Automaton has 128990 states and 178621 transitions. Word has length 309 [2020-10-27 15:51:43,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:51:43,682 INFO L481 AbstractCegarLoop]: Abstraction has 128990 states and 178621 transitions. [2020-10-27 15:51:43,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 15:51:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand 128990 states and 178621 transitions. [2020-10-27 15:51:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-27 15:51:44,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:51:44,335 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:44,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:51:44,335 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:51:44,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:51:44,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1729827852, now seen corresponding path program 1 times [2020-10-27 15:51:44,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:51:44,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358840144] [2020-10-27 15:51:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:51:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:44,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:44,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:44,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:44,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:46,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:49,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:49,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-27 15:51:49,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:51:49,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 15:51:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:51:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 15:51:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 15:51:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:49,723 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:51:49,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:51:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:49,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:49,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:51:49,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:51:49,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:51:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:51:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:51:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:49,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:51:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:49,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:49,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:51:49,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:49,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:51:49,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:49,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:51:49,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:51:49,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:51:49,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:49,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:51:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:49,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:49,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:49,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:51:49,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 15:51:49,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:51:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:51:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:51:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 15:51:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:49,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:50,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:50,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:51:50,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 15:51:50,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:51:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:51:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 15:51:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:50,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 15:51:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:50,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:50,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:50,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:51:50,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:50,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:51:50,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:51:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:51:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:51:50,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:50,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 15:51:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:50,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:50,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:50,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 15:51:50,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 15:51:50,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:51:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 15:51:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:51:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 204 proven. 42 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 15:51:50,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358840144] [2020-10-27 15:51:50,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:51:50,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:51:50,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967233487] [2020-10-27 15:51:50,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:51:50,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:51:50,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:51:50,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:51:50,311 INFO L87 Difference]: Start difference. First operand 128990 states and 178621 transitions. Second operand 7 states. [2020-10-27 15:51:50,706 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:51:51,474 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:52:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:52:00,463 INFO L93 Difference]: Finished difference Result 269054 states and 404807 transitions. [2020-10-27 15:52:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:52:00,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-27 15:52:00,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:52:01,829 INFO L225 Difference]: With dead ends: 269054 [2020-10-27 15:52:01,829 INFO L226 Difference]: Without dead ends: 143908 [2020-10-27 15:52:02,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:52:02,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143908 states. [2020-10-27 15:52:06,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143908 to 139118. [2020-10-27 15:52:06,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139118 states. [2020-10-27 15:52:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139118 states to 139118 states and 189156 transitions. [2020-10-27 15:52:07,376 INFO L78 Accepts]: Start accepts. Automaton has 139118 states and 189156 transitions. Word has length 313 [2020-10-27 15:52:07,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:52:07,376 INFO L481 AbstractCegarLoop]: Abstraction has 139118 states and 189156 transitions. [2020-10-27 15:52:07,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:52:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand 139118 states and 189156 transitions. [2020-10-27 15:52:07,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-27 15:52:07,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:52:07,685 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:52:07,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:52:07,686 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:52:07,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:52:07,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1842438367, now seen corresponding path program 1 times [2020-10-27 15:52:07,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:52:07,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738705206] [2020-10-27 15:52:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:52:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:07,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:07,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:09,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:12,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:12,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-27 15:52:12,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:52:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 15:52:12,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:12,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:52:12,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 15:52:12,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 15:52:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:13,091 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:52:13,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:52:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:13,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:13,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:52:13,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:52:13,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:52:13,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:52:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:52:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:52:13,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:13,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:52:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:13,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:13,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:13,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:52:13,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:52:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:52:13,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:52:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:52:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:52:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:13,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:52:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:13,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:13,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 15:52:13,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:52:13,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 15:52:13,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:52:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:52:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 15:52:13,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:13,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 15:52:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:13,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:13,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 15:52:13,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:52:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 15:52:13,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:52:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:52:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 15:52:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:13,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 15:52:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:13,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:13,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:13,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 15:52:13,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:52:13,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 15:52:13,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:13,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:52:13,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 15:52:13,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:52:13,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 237 proven. 29 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-27 15:52:13,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738705206] [2020-10-27 15:52:13,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:52:13,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:52:13,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283391831] [2020-10-27 15:52:13,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:52:13,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:52:13,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:52:13,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:52:13,898 INFO L87 Difference]: Start difference. First operand 139118 states and 189156 transitions. Second operand 7 states. [2020-10-27 15:52:14,176 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 15:52:16,852 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 15:52:22,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:52:22,199 INFO L93 Difference]: Finished difference Result 363414 states and 496268 transitions. [2020-10-27 15:52:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:52:22,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-27 15:52:22,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:52:23,499 INFO L225 Difference]: With dead ends: 363414 [2020-10-27 15:52:23,500 INFO L226 Difference]: Without dead ends: 233131 [2020-10-27 15:52:24,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:52:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233131 states. [2020-10-27 15:52:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233131 to 232832. [2020-10-27 15:52:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232832 states. [2020-10-27 15:52:31,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232832 states to 232832 states and 313108 transitions. [2020-10-27 15:52:31,532 INFO L78 Accepts]: Start accepts. Automaton has 232832 states and 313108 transitions. Word has length 335 [2020-10-27 15:52:31,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:52:31,532 INFO L481 AbstractCegarLoop]: Abstraction has 232832 states and 313108 transitions. [2020-10-27 15:52:31,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:52:31,533 INFO L276 IsEmpty]: Start isEmpty. Operand 232832 states and 313108 transitions. [2020-10-27 15:52:32,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-27 15:52:32,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:52:32,575 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 15:52:32,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 15:52:32,575 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:52:32,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:52:32,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1443525456, now seen corresponding path program 1 times [2020-10-27 15:52:32,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:52:32,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169672807] [2020-10-27 15:52:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:52:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:32,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:32,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:32,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking...