/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=SHALLOWEST --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/Problem14_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:23:20,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:23:20,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:23:20,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:23:20,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:23:20,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:23:20,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:23:20,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:23:20,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:23:20,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:23:20,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:23:20,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:23:20,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:23:20,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:23:20,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:23:20,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:23:20,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:23:20,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:23:21,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:23:21,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:23:21,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:23:21,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:23:21,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:23:21,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:23:21,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:23:21,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:23:21,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:23:21,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:23:21,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:23:21,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:23:21,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:23:21,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:23:21,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:23:21,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:23:21,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:23:21,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:23:21,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:23:21,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:23:21,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:23:21,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:23:21,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:23:21,032 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 [2020-10-26 23:23:21,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:23:21,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:23:21,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:23:21,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:23:21,064 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:23:21,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:23:21,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:23:21,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:23:21,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:23:21,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:23:21,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:23:21,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:23:21,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:23:21,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:23:21,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:23:21,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:23:21,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:23:21,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:23:21,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:23:21,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:23:21,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:23:21,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:23:21,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:23:21,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:23:21,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:23:21,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:23:21,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:23:21,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:23:21,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:23:21,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:23:21,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:23:21,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:23:21,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:23:21,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:23:21,485 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:23:21,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label18.c [2020-10-26 23:23:21,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4646aa2aa/c129a5dcb0b8451d8706cae9ef9635d2/FLAG0ca786dc7 [2020-10-26 23:23:22,365 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:23:22,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label18.c [2020-10-26 23:23:22,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4646aa2aa/c129a5dcb0b8451d8706cae9ef9635d2/FLAG0ca786dc7 [2020-10-26 23:23:22,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4646aa2aa/c129a5dcb0b8451d8706cae9ef9635d2 [2020-10-26 23:23:22,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:23:22,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:23:22,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:23:22,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:23:22,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:23:22,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:23:22" (1/1) ... [2020-10-26 23:23:22,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2b4a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:23:22, skipping insertion in model container [2020-10-26 23:23:22,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:23:22" (1/1) ... [2020-10-26 23:23:22,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:23:22,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:23:23,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:23:23,093 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:23:23,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:23:23,380 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:23:23,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:23:23 WrapperNode [2020-10-26 23:23:23,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:23:23,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:23:23,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:23:23,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:23:23,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:23:23" (1/1) ... [2020-10-26 23:23:23,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:23:23" (1/1) ... [2020-10-26 23:23:23,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:23:23" (1/1) ... [2020-10-26 23:23:23,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:23:23" (1/1) ... [2020-10-26 23:23:23,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:23:23" (1/1) ... [2020-10-26 23:23:23,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:23:23" (1/1) ... [2020-10-26 23:23:23,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:23:23" (1/1) ... [2020-10-26 23:23:23,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:23:23,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:23:23,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:23:23,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:23:23,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:23:23" (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 [2020-10-26 23:23:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:23:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:23:23,685 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:23:23,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:23:23,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:23:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:23:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:23:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:23:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:23:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:23:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:23:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:23:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:23:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:23:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:23:23,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:23:23,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:23:23,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:23:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:23:25,582 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:23:25,583 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:23:25,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:23:25 BoogieIcfgContainer [2020-10-26 23:23:25,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:23:25,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:23:25,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:23:25,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:23:25,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:23:22" (1/3) ... [2020-10-26 23:23:25,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4d4b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:23:25, skipping insertion in model container [2020-10-26 23:23:25,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:23:23" (2/3) ... [2020-10-26 23:23:25,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4d4b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:23:25, skipping insertion in model container [2020-10-26 23:23:25,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:23:25" (3/3) ... [2020-10-26 23:23:25,595 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label18.c [2020-10-26 23:23:25,608 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:23:25,614 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:23:25,629 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:23:25,660 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:23:25,660 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:23:25,661 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:23:25,661 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:23:25,661 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:23:25,661 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:23:25,661 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:23:25,661 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:23:25,686 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:23:25,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 23:23:25,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:25,693 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] [2020-10-26 23:23:25,694 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:25,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2131151706, now seen corresponding path program 1 times [2020-10-26 23:23:25,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:25,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230298914] [2020-10-26 23:23:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:25,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:26,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:26,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-26 23:23:26,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-26 23:23:26,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:26,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:23:26,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:23:26,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 23:23:26,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:23:26,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:26,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:26,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:26,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:23:26,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:23:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:23:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:23:26,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230298914] [2020-10-26 23:23:26,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:23:26,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:23:26,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516752328] [2020-10-26 23:23:26,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:23:26,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:26,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:23:26,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:23:26,716 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:23:29,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:29,171 INFO L93 Difference]: Finished difference Result 703 states and 1246 transitions. [2020-10-26 23:23:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:23:29,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-26 23:23:29,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:29,191 INFO L225 Difference]: With dead ends: 703 [2020-10-26 23:23:29,191 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:23:29,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:23:29,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:23:29,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2020-10-26 23:23:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-26 23:23:29,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 553 transitions. [2020-10-26 23:23:29,298 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 553 transitions. Word has length 27 [2020-10-26 23:23:29,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:29,299 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 553 transitions. [2020-10-26 23:23:29,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:23:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 553 transitions. [2020-10-26 23:23:29,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-26 23:23:29,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:29,305 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:23:29,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:23:29,306 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash -222927783, now seen corresponding path program 1 times [2020-10-26 23:23:29,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:29,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304565122] [2020-10-26 23:23:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:29,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:29,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:30,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:30,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:23:30,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:30,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-26 23:23:30,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:30,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:23:30,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:23:30,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:23:30,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:23:30,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:30,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:30,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:30,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:30,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:23:30,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:23:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:23:30,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:30,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:30,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:23:30,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 23:23:30,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:23:30,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:23:30,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304565122] [2020-10-26 23:23:30,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:23:30,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:23:30,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823142830] [2020-10-26 23:23:30,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:30,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:30,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:30,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:30,887 INFO L87 Difference]: Start difference. First operand 377 states and 553 transitions. Second operand 7 states. [2020-10-26 23:23:33,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:33,855 INFO L93 Difference]: Finished difference Result 1132 states and 1681 transitions. [2020-10-26 23:23:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:23:33,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-26 23:23:33,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:33,863 INFO L225 Difference]: With dead ends: 1132 [2020-10-26 23:23:33,863 INFO L226 Difference]: Without dead ends: 761 [2020-10-26 23:23:33,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:23:33,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-10-26 23:23:33,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 749. [2020-10-26 23:23:33,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-10-26 23:23:33,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 987 transitions. [2020-10-26 23:23:33,921 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 987 transitions. Word has length 96 [2020-10-26 23:23:33,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:33,921 INFO L481 AbstractCegarLoop]: Abstraction has 749 states and 987 transitions. [2020-10-26 23:23:33,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:33,922 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 987 transitions. [2020-10-26 23:23:33,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-26 23:23:33,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:33,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:33,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:23:33,926 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:33,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:33,927 INFO L82 PathProgramCache]: Analyzing trace with hash 981521889, now seen corresponding path program 1 times [2020-10-26 23:23:33,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:33,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672582947] [2020-10-26 23:23:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:35,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:35,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:23:35,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:35,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-10-26 23:23:35,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:23:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:23:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:23:35,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:35,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:35,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:35,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:35,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:35,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:23:35,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:35,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:35,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:35,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:23:35,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:35,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:35,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:35,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:35,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:35,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:23:35,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:23:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:23:35,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672582947] [2020-10-26 23:23:35,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:23:35,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:23:35,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923299855] [2020-10-26 23:23:35,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:35,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:35,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:35,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:35,462 INFO L87 Difference]: Start difference. First operand 749 states and 987 transitions. Second operand 7 states. [2020-10-26 23:23:38,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:38,139 INFO L93 Difference]: Finished difference Result 1366 states and 1911 transitions. [2020-10-26 23:23:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:23:38,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-26 23:23:38,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:38,152 INFO L225 Difference]: With dead ends: 1366 [2020-10-26 23:23:38,153 INFO L226 Difference]: Without dead ends: 991 [2020-10-26 23:23:38,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:23:38,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2020-10-26 23:23:38,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 935. [2020-10-26 23:23:38,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-26 23:23:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1191 transitions. [2020-10-26 23:23:38,247 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1191 transitions. Word has length 100 [2020-10-26 23:23:38,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:38,251 INFO L481 AbstractCegarLoop]: Abstraction has 935 states and 1191 transitions. [2020-10-26 23:23:38,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:38,251 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1191 transitions. [2020-10-26 23:23:38,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-26 23:23:38,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:38,267 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:38,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:23:38,267 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:38,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:38,268 INFO L82 PathProgramCache]: Analyzing trace with hash 542292684, now seen corresponding path program 1 times [2020-10-26 23:23:38,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:38,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277984933] [2020-10-26 23:23:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:38,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:38,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:38,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:39,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:39,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-26 23:23:39,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:23:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-10-26 23:23:39,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:23:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:23:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:23:39,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:39,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:39,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:39,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:39,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:23:39,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:39,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:39,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:39,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:39,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:39,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:39,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:39,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:39,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:23:39,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:39,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:23:39,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:23:39,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:39,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:23:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:39,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:39,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:39,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:39,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:23:39,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:23:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:23:40,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277984933] [2020-10-26 23:23:40,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:40,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:40,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354648810] [2020-10-26 23:23:40,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:40,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:40,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:40,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:40,089 INFO L87 Difference]: Start difference. First operand 935 states and 1191 transitions. Second operand 7 states. [2020-10-26 23:23:42,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:42,953 INFO L93 Difference]: Finished difference Result 1706 states and 2321 transitions. [2020-10-26 23:23:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:23:42,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-26 23:23:42,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:42,962 INFO L225 Difference]: With dead ends: 1706 [2020-10-26 23:23:42,962 INFO L226 Difference]: Without dead ends: 959 [2020-10-26 23:23:42,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:23:42,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-10-26 23:23:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 935. [2020-10-26 23:23:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-26 23:23:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1143 transitions. [2020-10-26 23:23:43,000 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1143 transitions. Word has length 184 [2020-10-26 23:23:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:43,000 INFO L481 AbstractCegarLoop]: Abstraction has 935 states and 1143 transitions. [2020-10-26 23:23:43,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1143 transitions. [2020-10-26 23:23:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-26 23:23:43,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:43,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:43,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:23:43,004 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:43,005 INFO L82 PathProgramCache]: Analyzing trace with hash 175291616, now seen corresponding path program 1 times [2020-10-26 23:23:43,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:43,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451710448] [2020-10-26 23:23:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:43,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:44,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:45,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:45,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-26 23:23:45,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:23:45,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2481 [2020-10-26 23:23:45,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:23:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:23:45,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:23:45,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:45,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:45,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:45,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:45,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:23:45,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:23:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:45,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:45,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:45,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:23:45,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:45,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:23:45,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:23:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:23:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:23:46,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 23:23:46,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:23:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:23:46,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451710448] [2020-10-26 23:23:46,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:46,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:46,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532798059] [2020-10-26 23:23:46,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:23:46,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:46,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:23:46,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:23:46,543 INFO L87 Difference]: Start difference. First operand 935 states and 1143 transitions. Second operand 8 states. [2020-10-26 23:23:49,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:49,194 INFO L93 Difference]: Finished difference Result 1524 states and 1926 transitions. [2020-10-26 23:23:49,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:49,195 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 194 [2020-10-26 23:23:49,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:49,201 INFO L225 Difference]: With dead ends: 1524 [2020-10-26 23:23:49,201 INFO L226 Difference]: Without dead ends: 777 [2020-10-26 23:23:49,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:23:49,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-10-26 23:23:49,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 751. [2020-10-26 23:23:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-26 23:23:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 941 transitions. [2020-10-26 23:23:49,229 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 941 transitions. Word has length 194 [2020-10-26 23:23:49,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:49,230 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 941 transitions. [2020-10-26 23:23:49,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:23:49,230 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 941 transitions. [2020-10-26 23:23:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-26 23:23:49,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:49,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:49,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:23:49,234 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:49,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:49,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1272723658, now seen corresponding path program 1 times [2020-10-26 23:23:49,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:49,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690027833] [2020-10-26 23:23:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:49,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:50,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:52,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:52,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-26 23:23:52,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:23:52,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2840 [2020-10-26 23:23:52,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:23:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:23:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:23:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:52,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:52,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:52,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:52,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:52,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:52,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:23:52,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:23:52,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:52,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:52,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:52,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:52,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:23:52,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:52,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:52,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:52,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:23:52,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:52,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:23:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:52,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:52,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:52,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:23:52,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:23:52,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:23:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 38 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:23:52,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690027833] [2020-10-26 23:23:52,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:52,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:52,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070178572] [2020-10-26 23:23:52,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:52,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:52,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:52,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:52,601 INFO L87 Difference]: Start difference. First operand 751 states and 941 transitions. Second operand 7 states. [2020-10-26 23:23:55,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:55,190 INFO L93 Difference]: Finished difference Result 2064 states and 2650 transitions. [2020-10-26 23:23:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:23:55,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-26 23:23:55,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:55,199 INFO L225 Difference]: With dead ends: 2064 [2020-10-26 23:23:55,199 INFO L226 Difference]: Without dead ends: 1317 [2020-10-26 23:23:55,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:23:55,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-10-26 23:23:55,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1311. [2020-10-26 23:23:55,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-26 23:23:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1583 transitions. [2020-10-26 23:23:55,255 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1583 transitions. Word has length 205 [2020-10-26 23:23:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:55,255 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1583 transitions. [2020-10-26 23:23:55,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:55,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1583 transitions. [2020-10-26 23:23:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-26 23:23:55,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:55,261 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:55,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:23:55,262 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:55,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:55,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1164979389, now seen corresponding path program 1 times [2020-10-26 23:23:55,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:55,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748647976] [2020-10-26 23:23:55,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:55,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:55,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:56,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:56,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-26 23:23:56,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:56,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1668 [2020-10-26 23:23:56,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:23:56,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:23:56,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:57,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:57,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:57,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:57,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:57,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:23:57,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:57,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:57,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:57,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:57,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:57,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:57,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:23:57,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:57,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:57,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:57,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:57,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:57,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:23:57,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:57,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:57,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:23:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:57,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:57,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:57,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:57,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:23:57,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:57,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:23:57,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:23:57,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-26 23:23:57,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748647976] [2020-10-26 23:23:57,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:57,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:57,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586535287] [2020-10-26 23:23:57,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:57,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:57,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:57,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:57,675 INFO L87 Difference]: Start difference. First operand 1311 states and 1583 transitions. Second operand 7 states. [2020-10-26 23:24:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:00,324 INFO L93 Difference]: Finished difference Result 2848 states and 3634 transitions. [2020-10-26 23:24:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:24:00,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 318 [2020-10-26 23:24:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:00,336 INFO L225 Difference]: With dead ends: 2848 [2020-10-26 23:24:00,336 INFO L226 Difference]: Without dead ends: 1909 [2020-10-26 23:24:00,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:24:00,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2020-10-26 23:24:00,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1881. [2020-10-26 23:24:00,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-10-26 23:24:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2279 transitions. [2020-10-26 23:24:00,398 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2279 transitions. Word has length 318 [2020-10-26 23:24:00,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:00,399 INFO L481 AbstractCegarLoop]: Abstraction has 1881 states and 2279 transitions. [2020-10-26 23:24:00,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2279 transitions. [2020-10-26 23:24:00,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-26 23:24:00,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:00,409 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:00,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:24:00,409 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:00,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1348332994, now seen corresponding path program 1 times [2020-10-26 23:24:00,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:00,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105984799] [2020-10-26 23:24:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:00,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:02,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:02,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-26 23:24:05,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:24:05,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 23:24:05,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:24:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:24:05,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:05,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:24:05,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:05,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:24:05,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:05,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:24:05,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:24:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:06,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:06,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:06,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:24:06,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:06,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:24:06,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:24:06,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-26 23:24:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:06,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:06,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:24:06,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:24:06,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:24:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:06,501 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 251 proven. 83 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-10-26 23:24:06,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105984799] [2020-10-26 23:24:06,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:06,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:06,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163326907] [2020-10-26 23:24:06,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:06,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:06,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:06,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:06,507 INFO L87 Difference]: Start difference. First operand 1881 states and 2279 transitions. Second operand 7 states. [2020-10-26 23:24:10,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:10,251 INFO L93 Difference]: Finished difference Result 4336 states and 5483 transitions. [2020-10-26 23:24:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:24:10,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 442 [2020-10-26 23:24:10,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:10,270 INFO L225 Difference]: With dead ends: 4336 [2020-10-26 23:24:10,270 INFO L226 Difference]: Without dead ends: 2827 [2020-10-26 23:24:10,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:24:10,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2020-10-26 23:24:10,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2633. [2020-10-26 23:24:10,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2633 states. [2020-10-26 23:24:10,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3293 transitions. [2020-10-26 23:24:10,359 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3293 transitions. Word has length 442 [2020-10-26 23:24:10,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:10,360 INFO L481 AbstractCegarLoop]: Abstraction has 2633 states and 3293 transitions. [2020-10-26 23:24:10,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3293 transitions. [2020-10-26 23:24:10,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-26 23:24:10,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:10,372 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:10,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:24:10,372 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:10,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:10,373 INFO L82 PathProgramCache]: Analyzing trace with hash 520304610, now seen corresponding path program 1 times [2020-10-26 23:24:10,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:10,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548338457] [2020-10-26 23:24:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:10,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:10,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:11,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:13,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:13,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-26 23:24:13,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:24:13,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3430 [2020-10-26 23:24:13,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:13,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:13,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 333 [2020-10-26 23:24:13,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:24:13,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:24:14,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:14,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:24:14,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:14,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:14,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:24:14,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:14,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:14,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:14,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:24:14,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:14,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:24:14,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:24:14,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:24:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-26 23:24:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:24:14,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-26 23:24:14,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:14,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:14,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:24:14,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 396 proven. 2 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-26 23:24:15,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548338457] [2020-10-26 23:24:15,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:15,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:15,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523226682] [2020-10-26 23:24:15,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:15,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:15,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:15,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:15,268 INFO L87 Difference]: Start difference. First operand 2633 states and 3293 transitions. Second operand 7 states. [2020-10-26 23:24:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:17,801 INFO L93 Difference]: Finished difference Result 5112 states and 6476 transitions. [2020-10-26 23:24:17,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:24:17,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 458 [2020-10-26 23:24:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:17,822 INFO L225 Difference]: With dead ends: 5112 [2020-10-26 23:24:17,823 INFO L226 Difference]: Without dead ends: 2653 [2020-10-26 23:24:17,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:24:17,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2020-10-26 23:24:17,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 2619. [2020-10-26 23:24:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2619 states. [2020-10-26 23:24:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 2907 transitions. [2020-10-26 23:24:17,924 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 2907 transitions. Word has length 458 [2020-10-26 23:24:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:17,925 INFO L481 AbstractCegarLoop]: Abstraction has 2619 states and 2907 transitions. [2020-10-26 23:24:17,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:17,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 2907 transitions. [2020-10-26 23:24:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2020-10-26 23:24:17,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:17,940 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:17,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:24:17,940 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:17,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:17,941 INFO L82 PathProgramCache]: Analyzing trace with hash 2101055399, now seen corresponding path program 1 times [2020-10-26 23:24:17,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:17,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637304505] [2020-10-26 23:24:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:18,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:19,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:23,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:23,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 589 [2020-10-26 23:24:23,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:24:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 23:24:23,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:24:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:24:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-26 23:24:23,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:23,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:23,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:23,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:23,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:23,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:23,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:24:23,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:23,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:23,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:23,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:23,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:23,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:23,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:23,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:24:23,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:23,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:23,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:23,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:23,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:23,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:23,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:23,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:24:23,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:24:23,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:23,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:23,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:23,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:23,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:23,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-26 23:24:23,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:24:23,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:23,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:23,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:23,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:24:23,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:23,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 23:24:23,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:24:23,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:24,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-26 23:24:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:24,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:24,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:24,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:24:24,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:24,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:24:24,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:24:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:24,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:24,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 540 proven. 144 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2020-10-26 23:24:24,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637304505] [2020-10-26 23:24:24,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:24,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:24,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8772249] [2020-10-26 23:24:24,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:24,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:24,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:24,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:24,472 INFO L87 Difference]: Start difference. First operand 2619 states and 2907 transitions. Second operand 7 states. [2020-10-26 23:24:26,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:26,631 INFO L93 Difference]: Finished difference Result 5254 states and 5881 transitions. [2020-10-26 23:24:26,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:24:26,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 569 [2020-10-26 23:24:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:26,646 INFO L225 Difference]: With dead ends: 5254 [2020-10-26 23:24:26,646 INFO L226 Difference]: Without dead ends: 3007 [2020-10-26 23:24:26,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:24:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2020-10-26 23:24:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 2987. [2020-10-26 23:24:26,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2987 states. [2020-10-26 23:24:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 3306 transitions. [2020-10-26 23:24:26,747 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 3306 transitions. Word has length 569 [2020-10-26 23:24:26,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:26,748 INFO L481 AbstractCegarLoop]: Abstraction has 2987 states and 3306 transitions. [2020-10-26 23:24:26,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 3306 transitions. [2020-10-26 23:24:26,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2020-10-26 23:24:26,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:26,766 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-26 23:24:26,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:24:26,767 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:26,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:26,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1426902285, now seen corresponding path program 1 times [2020-10-26 23:24:26,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:26,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224472934] [2020-10-26 23:24:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:26,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:27,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:29,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 615 [2020-10-26 23:24:29,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2705 [2020-10-26 23:24:29,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:24:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:24:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:29,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:29,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:29,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:29,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:29,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:29,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:29,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:29,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:29,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:29,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:29,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:24:29,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:29,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:29,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:29,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:29,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:29,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:29,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:29,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:29,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:29,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:24:29,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:29,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:29,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:29,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:24:29,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:30,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:30,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:30,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:30,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:24:30,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:30,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:24:30,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:24:30,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:30,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:24:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:30,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:30,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:30,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:24:30,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:30,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 23:24:30,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:30,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:30,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:30,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:24:30,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:24:30,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224472934] [2020-10-26 23:24:30,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:30,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:30,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913641275] [2020-10-26 23:24:30,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:30,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:30,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:30,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:30,633 INFO L87 Difference]: Start difference. First operand 2987 states and 3306 transitions. Second operand 7 states. [2020-10-26 23:24:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:32,802 INFO L93 Difference]: Finished difference Result 5804 states and 6476 transitions. [2020-10-26 23:24:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:24:32,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 595 [2020-10-26 23:24:32,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:32,822 INFO L225 Difference]: With dead ends: 5804 [2020-10-26 23:24:32,822 INFO L226 Difference]: Without dead ends: 3189 [2020-10-26 23:24:32,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:24:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2020-10-26 23:24:32,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 3175. [2020-10-26 23:24:32,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3175 states. [2020-10-26 23:24:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 3515 transitions. [2020-10-26 23:24:32,911 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 3515 transitions. Word has length 595 [2020-10-26 23:24:32,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:32,912 INFO L481 AbstractCegarLoop]: Abstraction has 3175 states and 3515 transitions. [2020-10-26 23:24:32,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 3515 transitions. [2020-10-26 23:24:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2020-10-26 23:24:32,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:32,930 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-26 23:24:32,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:24:32,931 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:32,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:32,931 INFO L82 PathProgramCache]: Analyzing trace with hash -667508657, now seen corresponding path program 1 times [2020-10-26 23:24:32,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:32,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261487810] [2020-10-26 23:24:32,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:33,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:33,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:33,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:33,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:38,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:38,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 633 [2020-10-26 23:24:38,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:24:38,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 23:24:38,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:38,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:24:38,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:24:38,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:24:38,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:38,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:38,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:38,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:38,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:38,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:38,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:38,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:38,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:38,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:38,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:38,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:38,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:24:38,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:38,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:38,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:38,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:38,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:38,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:38,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:38,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:24:38,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:38,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:38,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:38,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:38,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:38,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:38,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:38,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:38,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:24:38,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:24:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:38,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:38,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:39,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:39,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:39,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:39,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-10-26 23:24:39,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:24:39,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:39,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:24:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:39,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:39,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:39,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:24:39,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:39,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:24:39,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:39,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:39,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:24:39,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:39,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 444 proven. 72 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-26 23:24:39,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261487810] [2020-10-26 23:24:39,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:39,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:24:39,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824297641] [2020-10-26 23:24:39,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:24:39,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:39,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:24:39,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:24:39,536 INFO L87 Difference]: Start difference. First operand 3175 states and 3515 transitions. Second operand 8 states. [2020-10-26 23:24:41,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:41,988 INFO L93 Difference]: Finished difference Result 6916 states and 7686 transitions. [2020-10-26 23:24:41,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:24:41,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 613 [2020-10-26 23:24:41,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:42,013 INFO L225 Difference]: With dead ends: 6916 [2020-10-26 23:24:42,013 INFO L226 Difference]: Without dead ends: 4113 [2020-10-26 23:24:42,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:24:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2020-10-26 23:24:42,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 4091. [2020-10-26 23:24:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4091 states. [2020-10-26 23:24:42,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4091 states to 4091 states and 4453 transitions. [2020-10-26 23:24:42,126 INFO L78 Accepts]: Start accepts. Automaton has 4091 states and 4453 transitions. Word has length 613 [2020-10-26 23:24:42,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:42,127 INFO L481 AbstractCegarLoop]: Abstraction has 4091 states and 4453 transitions. [2020-10-26 23:24:42,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:24:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4091 states and 4453 transitions. [2020-10-26 23:24:42,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-10-26 23:24:42,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:42,134 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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] [2020-10-26 23:24:42,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:24:42,135 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:42,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:42,135 INFO L82 PathProgramCache]: Analyzing trace with hash -721832187, now seen corresponding path program 1 times [2020-10-26 23:24:42,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:42,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206270478] [2020-10-26 23:24:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:42,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:44,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:44,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 656 [2020-10-26 23:24:44,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2516 [2020-10-26 23:24:44,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:24:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:24:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:44,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:44,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:44,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:44,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:44,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:44,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:44,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:44,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:45,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:45,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:45,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:45,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:45,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:45,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:24:45,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:45,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:45,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:45,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:45,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:45,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:45,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:45,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:24:45,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:45,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:45,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:45,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:45,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:45,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:45,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:45,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:45,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:24:45,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:45,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:45,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:45,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:45,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:24:45,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:45,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:24:45,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:24:45,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:45,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:24:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:45,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:45,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:45,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:24:45,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:45,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:24:45,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:45,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:45,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:45,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:24:45,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 545 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:24:45,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206270478] [2020-10-26 23:24:45,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:45,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:45,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824755431] [2020-10-26 23:24:45,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:45,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:45,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:45,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:45,754 INFO L87 Difference]: Start difference. First operand 4091 states and 4453 transitions. Second operand 7 states. [2020-10-26 23:24:45,920 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:24:48,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:48,092 INFO L93 Difference]: Finished difference Result 8934 states and 9907 transitions. [2020-10-26 23:24:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:24:48,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 636 [2020-10-26 23:24:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:48,140 INFO L225 Difference]: With dead ends: 8934 [2020-10-26 23:24:48,140 INFO L226 Difference]: Without dead ends: 5029 [2020-10-26 23:24:48,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:24:48,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2020-10-26 23:24:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 5021. [2020-10-26 23:24:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5021 states. [2020-10-26 23:24:48,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 5530 transitions. [2020-10-26 23:24:48,271 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 5530 transitions. Word has length 636 [2020-10-26 23:24:48,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:48,272 INFO L481 AbstractCegarLoop]: Abstraction has 5021 states and 5530 transitions. [2020-10-26 23:24:48,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:48,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 5530 transitions. [2020-10-26 23:24:48,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2020-10-26 23:24:48,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:48,283 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:48,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:24:48,283 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:48,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:48,284 INFO L82 PathProgramCache]: Analyzing trace with hash 149672428, now seen corresponding path program 1 times [2020-10-26 23:24:48,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:48,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025082926] [2020-10-26 23:24:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:48,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:48,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:49,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:49,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 790 [2020-10-26 23:24:49,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-26 23:24:49,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:24:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:24:49,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:50,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:50,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:50,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:50,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:24:50,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:50,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:24:50,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:50,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:50,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:50,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:50,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:24:50,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:24:50,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:24:50,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:24:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:24:50,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:24:50,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:24:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:24:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:24:50,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:24:50,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:24:50,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 484 proven. 2 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-26 23:24:51,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025082926] [2020-10-26 23:24:51,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:51,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:51,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294732877] [2020-10-26 23:24:51,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:51,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:51,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:51,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:51,037 INFO L87 Difference]: Start difference. First operand 5021 states and 5530 transitions. Second operand 7 states. [2020-10-26 23:24:53,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:53,216 INFO L93 Difference]: Finished difference Result 9860 states and 10910 transitions. [2020-10-26 23:24:53,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:24:53,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 768 [2020-10-26 23:24:53,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:53,230 INFO L225 Difference]: With dead ends: 9860 [2020-10-26 23:24:53,231 INFO L226 Difference]: Without dead ends: 5211 [2020-10-26 23:24:53,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:24:53,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5211 states. [2020-10-26 23:24:53,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5211 to 5205. [2020-10-26 23:24:53,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5205 states. [2020-10-26 23:24:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 5729 transitions. [2020-10-26 23:24:53,344 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 5729 transitions. Word has length 768 [2020-10-26 23:24:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:53,345 INFO L481 AbstractCegarLoop]: Abstraction has 5205 states and 5729 transitions. [2020-10-26 23:24:53,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:53,345 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 5729 transitions. [2020-10-26 23:24:53,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2020-10-26 23:24:53,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:53,356 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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] [2020-10-26 23:24:53,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:24:53,356 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:53,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:53,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1349929803, now seen corresponding path program 1 times [2020-10-26 23:24:53,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:53,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236250148] [2020-10-26 23:24:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:53,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:54,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 835 [2020-10-26 23:24:54,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-10-26 23:24:54,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 806 [2020-10-26 23:24:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 23:24:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:54,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:54,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:54,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:54,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:54,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:24:54,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:54,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:54,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:54,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:54,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:54,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:54,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:24:54,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:54,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:54,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:54,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:54,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:54,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:54,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:54,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:54,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:24:54,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:54,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:54,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:54,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:54,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:54,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:54,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:24:54,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:54,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:54,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:54,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:24:54,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:54,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:54,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:24:54,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:54,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:54,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:54,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:54,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:54,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:24:54,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:54,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:54,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:54,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:54,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:24:54,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:54,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 23:24:54,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:24:54,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2105 backedges. 144 proven. 7 refuted. 0 times theorem prover too weak. 1954 trivial. 0 not checked. [2020-10-26 23:24:55,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236250148] [2020-10-26 23:24:55,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:55,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:24:55,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000090617] [2020-10-26 23:24:55,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:24:55,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:55,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:24:55,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:24:55,339 INFO L87 Difference]: Start difference. First operand 5205 states and 5729 transitions. Second operand 5 states. [2020-10-26 23:24:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:57,064 INFO L93 Difference]: Finished difference Result 11146 states and 12469 transitions. [2020-10-26 23:24:57,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:24:57,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 811 [2020-10-26 23:24:57,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:57,084 INFO L225 Difference]: With dead ends: 11146 [2020-10-26 23:24:57,084 INFO L226 Difference]: Without dead ends: 6125 [2020-10-26 23:24:57,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:24:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6125 states. [2020-10-26 23:24:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6125 to 6123. [2020-10-26 23:24:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6123 states. [2020-10-26 23:24:57,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 6769 transitions. [2020-10-26 23:24:57,216 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 6769 transitions. Word has length 811 [2020-10-26 23:24:57,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:57,217 INFO L481 AbstractCegarLoop]: Abstraction has 6123 states and 6769 transitions. [2020-10-26 23:24:57,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:24:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 6769 transitions. [2020-10-26 23:24:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2020-10-26 23:24:57,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:57,230 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:57,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:24:57,230 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:57,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:57,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1026296489, now seen corresponding path program 1 times [2020-10-26 23:24:57,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:57,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844643654] [2020-10-26 23:24:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:57,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:58,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:58,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 900 [2020-10-26 23:24:58,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-10-26 23:24:58,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:24:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 23:24:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:58,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:58,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:58,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:58,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:58,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:58,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:24:58,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:58,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:58,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:58,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:58,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:58,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:58,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:58,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:58,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:58,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:58,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:58,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:58,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:58,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:58,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:58,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:58,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:58,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:58,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:58,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:58,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:58,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:24:58,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:58,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:58,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:58,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:58,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:58,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:58,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:58,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:58,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:58,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:58,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:58,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:24:58,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:58,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:58,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:58,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:58,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:58,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:58,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:58,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:58,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:58,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:58,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:24:58,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:58,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:58,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:58,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:58,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:58,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:58,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:58,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:24:58,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:24:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 144 proven. 7 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2020-10-26 23:24:59,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844643654] [2020-10-26 23:24:59,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:59,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:24:59,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12933287] [2020-10-26 23:24:59,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:24:59,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:59,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:24:59,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:24:59,334 INFO L87 Difference]: Start difference. First operand 6123 states and 6769 transitions. Second operand 5 states. [2020-10-26 23:25:00,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:00,985 INFO L93 Difference]: Finished difference Result 12976 states and 14633 transitions. [2020-10-26 23:25:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:25:00,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 876 [2020-10-26 23:25:00,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:01,010 INFO L225 Difference]: With dead ends: 12976 [2020-10-26 23:25:01,011 INFO L226 Difference]: Without dead ends: 7225 [2020-10-26 23:25:01,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:25:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7225 states. [2020-10-26 23:25:01,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7225 to 7223. [2020-10-26 23:25:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7223 states. [2020-10-26 23:25:01,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7223 states to 7223 states and 8142 transitions. [2020-10-26 23:25:01,169 INFO L78 Accepts]: Start accepts. Automaton has 7223 states and 8142 transitions. Word has length 876 [2020-10-26 23:25:01,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:01,172 INFO L481 AbstractCegarLoop]: Abstraction has 7223 states and 8142 transitions. [2020-10-26 23:25:01,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:25:01,172 INFO L276 IsEmpty]: Start isEmpty. Operand 7223 states and 8142 transitions. [2020-10-26 23:25:01,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2020-10-26 23:25:01,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:01,188 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:01,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:25:01,188 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:01,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:01,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1862076144, now seen corresponding path program 1 times [2020-10-26 23:25:01,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:01,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749614212] [2020-10-26 23:25:01,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:01,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:06,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:06,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 988 [2020-10-26 23:25:06,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:06,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-26 23:25:06,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:06,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:25:06,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:25:06,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:25:06,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:06,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:06,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:06,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:06,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:06,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:25:06,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:06,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:06,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:06,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:06,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:06,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:25:06,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:06,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:06,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:06,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:06,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:06,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:06,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:06,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:06,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:06,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:06,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:06,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:06,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:06,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:06,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:06,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:06,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:06,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:25:06,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:06,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:06,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:06,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:06,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:06,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:06,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:06,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:06,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:06,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:25:06,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:06,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:06,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:06,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:06,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:06,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:06,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:25:06,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:07,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:07,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:07,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:07,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:25:07,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:07,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:25:07,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:25:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:07,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:25:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:07,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:07,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:07,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:07,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:07,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-26 23:25:07,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:25:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:25:07,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:07,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:25:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:07,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:07,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:25:07,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:07,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:25:07,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:07,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:07,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:07,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:25:07,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2777 backedges. 1326 proven. 85 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:25:08,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749614212] [2020-10-26 23:25:08,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:08,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:25:08,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829536606] [2020-10-26 23:25:08,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:25:08,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:08,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:25:08,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:25:08,082 INFO L87 Difference]: Start difference. First operand 7223 states and 8142 transitions. Second operand 10 states. [2020-10-26 23:25:11,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:11,731 INFO L93 Difference]: Finished difference Result 15377 states and 17606 transitions. [2020-10-26 23:25:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:25:11,742 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 962 [2020-10-26 23:25:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:11,783 INFO L225 Difference]: With dead ends: 15377 [2020-10-26 23:25:11,784 INFO L226 Difference]: Without dead ends: 8526 [2020-10-26 23:25:11,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:25:11,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8526 states. [2020-10-26 23:25:11,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8526 to 8519. [2020-10-26 23:25:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8519 states. [2020-10-26 23:25:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8519 states to 8519 states and 9771 transitions. [2020-10-26 23:25:11,988 INFO L78 Accepts]: Start accepts. Automaton has 8519 states and 9771 transitions. Word has length 962 [2020-10-26 23:25:11,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:11,989 INFO L481 AbstractCegarLoop]: Abstraction has 8519 states and 9771 transitions. [2020-10-26 23:25:11,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:25:11,990 INFO L276 IsEmpty]: Start isEmpty. Operand 8519 states and 9771 transitions. [2020-10-26 23:25:12,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2020-10-26 23:25:12,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:12,008 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:12,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:25:12,008 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:12,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:12,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1647788204, now seen corresponding path program 1 times [2020-10-26 23:25:12,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:12,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916193387] [2020-10-26 23:25:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:12,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:13,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:17,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:17,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1045 [2020-10-26 23:25:17,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:25:17,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:25:17,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:25:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:25:17,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:17,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:17,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:17,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:17,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:17,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:25:17,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:17,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:17,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:17,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:17,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:17,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:17,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:17,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:17,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:17,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:25:17,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:17,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:17,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:17,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:17,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:17,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:17,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:17,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:17,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:17,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:17,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:17,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:17,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:17,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:25:17,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:17,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:17,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:17,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:17,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:17,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:17,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:25:17,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:17,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:17,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:17,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:17,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:17,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:17,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:17,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:17,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:17,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:25:17,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:25:17,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:17,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:17,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:18,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:18,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:25:18,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:18,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-26 23:25:18,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:25:18,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:18,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2020-10-26 23:25:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:18,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:18,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:18,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:18,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:18,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:25:18,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:25:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:18,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:18,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 914 [2020-10-26 23:25:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:18,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:18,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:18,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:25:18,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:18,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:25:18,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:25:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:18,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 747 proven. 215 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2020-10-26 23:25:19,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916193387] [2020-10-26 23:25:19,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:19,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:25:19,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076915119] [2020-10-26 23:25:19,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:25:19,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:19,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:25:19,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:25:19,128 INFO L87 Difference]: Start difference. First operand 8519 states and 9771 transitions. Second operand 7 states. [2020-10-26 23:25:21,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:21,293 INFO L93 Difference]: Finished difference Result 16862 states and 19423 transitions. [2020-10-26 23:25:21,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:25:21,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1019 [2020-10-26 23:25:21,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:21,320 INFO L225 Difference]: With dead ends: 16862 [2020-10-26 23:25:21,320 INFO L226 Difference]: Without dead ends: 8715 [2020-10-26 23:25:21,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:25:21,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8715 states. [2020-10-26 23:25:21,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8715 to 8701. [2020-10-26 23:25:21,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8701 states. [2020-10-26 23:25:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8701 states to 8701 states and 9959 transitions. [2020-10-26 23:25:21,505 INFO L78 Accepts]: Start accepts. Automaton has 8701 states and 9959 transitions. Word has length 1019 [2020-10-26 23:25:21,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:21,506 INFO L481 AbstractCegarLoop]: Abstraction has 8701 states and 9959 transitions. [2020-10-26 23:25:21,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:25:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 8701 states and 9959 transitions. [2020-10-26 23:25:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2020-10-26 23:25:21,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:21,527 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:21,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:25:21,527 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:21,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:21,528 INFO L82 PathProgramCache]: Analyzing trace with hash 473408495, now seen corresponding path program 1 times [2020-10-26 23:25:21,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:21,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804308159] [2020-10-26 23:25:21,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:21,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:22,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:23,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1098 [2020-10-26 23:25:26,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:25:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-26 23:25:26,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:25:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:25:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:26,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 23:25:26,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:26,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:26,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:26,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:26,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:26,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:26,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:26,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:26,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:26,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:26,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:26,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:26,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:27,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:27,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:27,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:27,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:25:27,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:27,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:27,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:27,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:27,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:27,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:27,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:27,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:27,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:27,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:27,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:27,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:27,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:27,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:27,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:27,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:27,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:25:27,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:27,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:27,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:27,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:27,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:25:27,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:27,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:27,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:27,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:27,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:27,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:27,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:25:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:27,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:27,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:27,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:27,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:27,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:25:27,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:25:27,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:27,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:25:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:27,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:27,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:27,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:25:27,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:27,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-26 23:25:27,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:25:27,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:27,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2020-10-26 23:25:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:27,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:27,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:25:27,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:27,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:25:27,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-26 23:25:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:27,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 780 proven. 82 refuted. 0 times theorem prover too weak. 2711 trivial. 0 not checked. [2020-10-26 23:25:28,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804308159] [2020-10-26 23:25:28,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:28,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:25:28,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225942487] [2020-10-26 23:25:28,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:25:28,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:28,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:25:28,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:25:28,421 INFO L87 Difference]: Start difference. First operand 8701 states and 9959 transitions. Second operand 7 states. [2020-10-26 23:25:30,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:30,712 INFO L93 Difference]: Finished difference Result 18872 states and 22029 transitions. [2020-10-26 23:25:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:25:30,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1070 [2020-10-26 23:25:30,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:30,747 INFO L225 Difference]: With dead ends: 18872 [2020-10-26 23:25:30,747 INFO L226 Difference]: Without dead ends: 10357 [2020-10-26 23:25:30,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:25:30,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10357 states. [2020-10-26 23:25:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10357 to 10357. [2020-10-26 23:25:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10357 states. [2020-10-26 23:25:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10357 states to 10357 states and 11763 transitions. [2020-10-26 23:25:30,964 INFO L78 Accepts]: Start accepts. Automaton has 10357 states and 11763 transitions. Word has length 1070 [2020-10-26 23:25:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:30,966 INFO L481 AbstractCegarLoop]: Abstraction has 10357 states and 11763 transitions. [2020-10-26 23:25:30,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:25:30,966 INFO L276 IsEmpty]: Start isEmpty. Operand 10357 states and 11763 transitions. [2020-10-26 23:25:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2020-10-26 23:25:30,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:30,985 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:30,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:25:30,985 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:30,986 INFO L82 PathProgramCache]: Analyzing trace with hash 2141970573, now seen corresponding path program 2 times [2020-10-26 23:25:30,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:30,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019884637] [2020-10-26 23:25:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:31,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:31,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:32,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:34,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1128 [2020-10-26 23:25:36,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:25:36,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 23:25:36,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:25:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:25:36,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:36,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:25:36,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:36,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:25:36,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:36,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:36,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:36,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:36,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:36,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:36,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:36,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:36,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:25:36,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:25:36,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:36,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:25:36,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:25:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-26 23:25:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:25:36,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:25:36,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-26 23:25:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 816 [2020-10-26 23:25:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:36,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:25:36,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:25:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-26 23:25:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:37,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:37,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:25:37,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:25:37,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:25:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3681 backedges. 641 proven. 236 refuted. 0 times theorem prover too weak. 2804 trivial. 0 not checked. [2020-10-26 23:25:37,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019884637] [2020-10-26 23:25:37,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:37,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:25:37,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125418505] [2020-10-26 23:25:37,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:25:37,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:37,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:25:37,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:25:37,632 INFO L87 Difference]: Start difference. First operand 10357 states and 11763 transitions. Second operand 7 states. [2020-10-26 23:25:40,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:40,021 INFO L93 Difference]: Finished difference Result 20920 states and 23859 transitions. [2020-10-26 23:25:40,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:25:40,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1100 [2020-10-26 23:25:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:40,056 INFO L225 Difference]: With dead ends: 20920 [2020-10-26 23:25:40,056 INFO L226 Difference]: Without dead ends: 10935 [2020-10-26 23:25:40,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:25:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10935 states. [2020-10-26 23:25:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10935 to 10729. [2020-10-26 23:25:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10729 states. [2020-10-26 23:25:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10729 states to 10729 states and 12143 transitions. [2020-10-26 23:25:40,291 INFO L78 Accepts]: Start accepts. Automaton has 10729 states and 12143 transitions. Word has length 1100 [2020-10-26 23:25:40,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:40,292 INFO L481 AbstractCegarLoop]: Abstraction has 10729 states and 12143 transitions. [2020-10-26 23:25:40,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:25:40,292 INFO L276 IsEmpty]: Start isEmpty. Operand 10729 states and 12143 transitions. [2020-10-26 23:25:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2020-10-26 23:25:40,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:40,312 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:40,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:25:40,312 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:40,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:40,313 INFO L82 PathProgramCache]: Analyzing trace with hash -275600095, now seen corresponding path program 1 times [2020-10-26 23:25:40,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:40,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062344015] [2020-10-26 23:25:40,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:40,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:40,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:40,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:41,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1146 [2020-10-26 23:25:45,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:25:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 23:25:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:25:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-26 23:25:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:45,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:25:45,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:45,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:25:45,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:45,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:45,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:45,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:45,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:25:45,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:46,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:46,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:25:46,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:46,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:25:46,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:25:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:46,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:25:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:46,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:46,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:46,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:46,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:46,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:25:46,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:25:46,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:25:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:46,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:46,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:46,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:46,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:46,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:46,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-26 23:25:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:46,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-10-26 23:25:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:46,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:46,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:25:46,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:46,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:25:46,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-26 23:25:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:46,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:46,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 834 [2020-10-26 23:25:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:46,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:46,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:46,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:46,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:25:46,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:25:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:46,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1013 [2020-10-26 23:25:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:46,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:46,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:25:46,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:25:46,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:25:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3869 backedges. 691 proven. 391 refuted. 0 times theorem prover too weak. 2787 trivial. 0 not checked. [2020-10-26 23:25:47,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062344015] [2020-10-26 23:25:47,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:47,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:25:47,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902401994] [2020-10-26 23:25:47,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:25:47,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:47,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:25:47,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:25:47,103 INFO L87 Difference]: Start difference. First operand 10729 states and 12143 transitions. Second operand 7 states. [2020-10-26 23:25:50,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:50,146 INFO L93 Difference]: Finished difference Result 21268 states and 24092 transitions. [2020-10-26 23:25:50,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:25:50,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1118 [2020-10-26 23:25:50,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:50,180 INFO L225 Difference]: With dead ends: 21268 [2020-10-26 23:25:50,180 INFO L226 Difference]: Without dead ends: 10911 [2020-10-26 23:25:50,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:25:50,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10911 states. [2020-10-26 23:25:50,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10911 to 10729. [2020-10-26 23:25:50,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10729 states. [2020-10-26 23:25:50,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10729 states to 10729 states and 12141 transitions. [2020-10-26 23:25:50,401 INFO L78 Accepts]: Start accepts. Automaton has 10729 states and 12141 transitions. Word has length 1118 [2020-10-26 23:25:50,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:50,402 INFO L481 AbstractCegarLoop]: Abstraction has 10729 states and 12141 transitions. [2020-10-26 23:25:50,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:25:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 10729 states and 12141 transitions. [2020-10-26 23:25:50,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1123 [2020-10-26 23:25:50,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:50,427 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:50,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:25:50,427 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:50,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:50,428 INFO L82 PathProgramCache]: Analyzing trace with hash 235751048, now seen corresponding path program 1 times [2020-10-26 23:25:50,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:50,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831640051] [2020-10-26 23:25:50,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:50,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:51,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:55,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:55,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1148 [2020-10-26 23:25:55,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:25:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-26 23:25:55,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:25:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:25:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:56,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:56,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:56,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:56,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:56,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:56,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:25:56,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:56,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:56,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:56,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:56,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:56,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:56,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:56,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:25:56,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:56,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:56,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:56,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:56,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:56,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:56,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:56,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:25:56,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:56,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:56,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:56,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:56,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:56,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:56,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:56,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:25:56,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:56,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:56,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:56,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:56,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:25:56,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:25:56,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:56,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:25:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:56,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:56,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:25:56,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:56,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:25:56,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:56,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:56,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:25:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:56,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:56,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:56,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:25:56,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 23:25:56,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:25:56,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:56,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:25:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:56,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:56,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:56,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:56,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:56,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-26 23:25:56,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:25:56,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:57,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:25:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:57,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:57,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:57,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:25:57,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:57,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:25:57,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:57,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:25:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:57,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3400 backedges. 1013 proven. 85 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-26 23:25:57,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831640051] [2020-10-26 23:25:57,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:57,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:25:57,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777925056] [2020-10-26 23:25:57,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:25:57,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:57,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:25:57,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:25:57,989 INFO L87 Difference]: Start difference. First operand 10729 states and 12141 transitions. Second operand 7 states. [2020-10-26 23:26:00,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:00,328 INFO L93 Difference]: Finished difference Result 22730 states and 25929 transitions. [2020-10-26 23:26:00,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:26:00,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1122 [2020-10-26 23:26:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:00,360 INFO L225 Difference]: With dead ends: 22730 [2020-10-26 23:26:00,360 INFO L226 Difference]: Without dead ends: 12189 [2020-10-26 23:26:00,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:00,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12189 states. [2020-10-26 23:26:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12189 to 11825. [2020-10-26 23:26:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11825 states. [2020-10-26 23:26:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11825 states to 11825 states and 13255 transitions. [2020-10-26 23:26:00,586 INFO L78 Accepts]: Start accepts. Automaton has 11825 states and 13255 transitions. Word has length 1122 [2020-10-26 23:26:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:00,588 INFO L481 AbstractCegarLoop]: Abstraction has 11825 states and 13255 transitions. [2020-10-26 23:26:00,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand 11825 states and 13255 transitions. [2020-10-26 23:26:00,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1189 [2020-10-26 23:26:00,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:00,607 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:00,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:26:00,607 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:00,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:00,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1369494104, now seen corresponding path program 1 times [2020-10-26 23:26:00,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:00,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508242945] [2020-10-26 23:26:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:01,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:01,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:03,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:05,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:05,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1218 [2020-10-26 23:26:05,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:26:05,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-26 23:26:05,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:26:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:26:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-26 23:26:05,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:05,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:05,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:05,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:05,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:05,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:26:05,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:05,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:06,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:26:06,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:06,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:06,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:26:06,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:26:06,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:26:06,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:26:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:26:06,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:26:06,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:06,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:26:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:26:06,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:26:06,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:06,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:26:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:26:06,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:26:06,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:26:06,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:26:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:26:06,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 23:26:06,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:26:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:26:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:26:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:26:06,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:26:06,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:06,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:06,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:26:06,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:26:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:26:06,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:26:06,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:06,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:26:06,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1058 [2020-10-26 23:26:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:26:06,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:26:06,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-26 23:26:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:08,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4515 backedges. 2102 proven. 456 refuted. 0 times theorem prover too weak. 1957 trivial. 0 not checked. [2020-10-26 23:26:08,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508242945] [2020-10-26 23:26:08,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:08,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:26:08,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480891584] [2020-10-26 23:26:08,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:26:08,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:08,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:26:08,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:08,189 INFO L87 Difference]: Start difference. First operand 11825 states and 13255 transitions. Second operand 11 states. [2020-10-26 23:26:12,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:12,067 INFO L93 Difference]: Finished difference Result 23463 states and 26325 transitions. [2020-10-26 23:26:12,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:26:12,068 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1188 [2020-10-26 23:26:12,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:12,096 INFO L225 Difference]: With dead ends: 23463 [2020-10-26 23:26:12,096 INFO L226 Difference]: Without dead ends: 12010 [2020-10-26 23:26:12,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:26:12,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12010 states. [2020-10-26 23:26:12,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12010 to 11825. [2020-10-26 23:26:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11825 states. [2020-10-26 23:26:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11825 states to 11825 states and 13245 transitions. [2020-10-26 23:26:12,342 INFO L78 Accepts]: Start accepts. Automaton has 11825 states and 13245 transitions. Word has length 1188 [2020-10-26 23:26:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:12,343 INFO L481 AbstractCegarLoop]: Abstraction has 11825 states and 13245 transitions. [2020-10-26 23:26:12,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:26:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 11825 states and 13245 transitions. [2020-10-26 23:26:12,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1364 [2020-10-26 23:26:12,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:12,366 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:12,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 23:26:12,366 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:12,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:12,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1225755611, now seen corresponding path program 1 times [2020-10-26 23:26:12,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:12,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107004030] [2020-10-26 23:26:12,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:12,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:12,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:15,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:17,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:17,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1395 [2020-10-26 23:26:17,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:26:17,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-26 23:26:17,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:17,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:17,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-26 23:26:17,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 23:26:17,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:17,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:17,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:17,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:17,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:17,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:17,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:26:17,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:17,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:17,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:17,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:17,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:17,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:17,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:17,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:17,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:26:17,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:17,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:17,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:17,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:17,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:17,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:17,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:26:17,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:17,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:17,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:17,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:17,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:26:17,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:17,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:26:17,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:17,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:18,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:26:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:18,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:18,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:18,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:26:18,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:18,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:26:18,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:18,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:18,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:26:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:18,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:18,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:18,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:26:18,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:18,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:26:18,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:18,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:18,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:18,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:18,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:18,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:26:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:18,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:18,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:18,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:26:18,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:18,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:26:18,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:18,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:18,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:26:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:18,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:18,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:18,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:26:18,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:26:18,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:18,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:26:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:18,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:18,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:26:18,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:18,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:26:18,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:18,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:18,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:26:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:18,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:18,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:18,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:26:18,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:18,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:26:18,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-26 23:26:18,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:18,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-26 23:26:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:18,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:18,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:18,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:26:18,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:18,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:26:18,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:26:18,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1233 [2020-10-26 23:26:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:18,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:18,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:26:18,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:18,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:26:18,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-26 23:26:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:18,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5874 backedges. 1223 proven. 110 refuted. 0 times theorem prover too weak. 4541 trivial. 0 not checked. [2020-10-26 23:26:19,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107004030] [2020-10-26 23:26:19,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:19,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:19,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222428823] [2020-10-26 23:26:19,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:19,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:19,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:19,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:19,605 INFO L87 Difference]: Start difference. First operand 11825 states and 13245 transitions. Second operand 7 states. [2020-10-26 23:26:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:21,869 INFO L93 Difference]: Finished difference Result 25300 states and 28329 transitions. [2020-10-26 23:26:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:26:21,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1363 [2020-10-26 23:26:21,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:21,900 INFO L225 Difference]: With dead ends: 25300 [2020-10-26 23:26:21,901 INFO L226 Difference]: Without dead ends: 13847 [2020-10-26 23:26:21,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:21,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13847 states. [2020-10-26 23:26:22,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13847 to 13299. [2020-10-26 23:26:22,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13299 states. [2020-10-26 23:26:22,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13299 states to 13299 states and 14874 transitions. [2020-10-26 23:26:22,175 INFO L78 Accepts]: Start accepts. Automaton has 13299 states and 14874 transitions. Word has length 1363 [2020-10-26 23:26:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:22,176 INFO L481 AbstractCegarLoop]: Abstraction has 13299 states and 14874 transitions. [2020-10-26 23:26:22,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 13299 states and 14874 transitions. [2020-10-26 23:26:22,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1428 [2020-10-26 23:26:22,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:22,200 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:22,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 23:26:22,201 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:22,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:22,201 INFO L82 PathProgramCache]: Analyzing trace with hash 795632549, now seen corresponding path program 1 times [2020-10-26 23:26:22,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:22,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519576277] [2020-10-26 23:26:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:22,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:23,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:23,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1459 [2020-10-26 23:26:23,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:23,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1324 [2020-10-26 23:26:23,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1430 [2020-10-26 23:26:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 23:26:23,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:24,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:26:24,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:24,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:26:24,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:24,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:26:24,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:24,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:26:24,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:26:24,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:24,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:24,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:24,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:26:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:26:24,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:26:24,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:26:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:26:24,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:26:24,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:24,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:24,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:24,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:26:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:26:24,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:26:24,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:24,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:24,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:24,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:26:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:26:24,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:26:24,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:24,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:26:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:26:24,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:26:24,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:26:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:26:24,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:26:24,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:24,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-26 23:26:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-26 23:26:24,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:26:24,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:24,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:24,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-26 23:26:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:24,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:24,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:24,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:26:24,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:24,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:26:24,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:26:24,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6016 backedges. 228 proven. 11 refuted. 0 times theorem prover too weak. 5777 trivial. 0 not checked. [2020-10-26 23:26:25,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519576277] [2020-10-26 23:26:25,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:25,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:26:25,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384785330] [2020-10-26 23:26:25,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:26:25,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:25,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:26:25,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:26:25,854 INFO L87 Difference]: Start difference. First operand 13299 states and 14874 transitions. Second operand 5 states. [2020-10-26 23:26:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:27,732 INFO L93 Difference]: Finished difference Result 26764 states and 30077 transitions. [2020-10-26 23:26:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:26:27,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1427 [2020-10-26 23:26:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:27,751 INFO L225 Difference]: With dead ends: 26764 [2020-10-26 23:26:27,751 INFO L226 Difference]: Without dead ends: 10157 [2020-10-26 23:26:27,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:26:27,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10157 states. [2020-10-26 23:26:27,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10157 to 9973. [2020-10-26 23:26:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9973 states. [2020-10-26 23:26:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9973 states to 9973 states and 10722 transitions. [2020-10-26 23:26:27,959 INFO L78 Accepts]: Start accepts. Automaton has 9973 states and 10722 transitions. Word has length 1427 [2020-10-26 23:26:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:27,960 INFO L481 AbstractCegarLoop]: Abstraction has 9973 states and 10722 transitions. [2020-10-26 23:26:27,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:26:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 9973 states and 10722 transitions. [2020-10-26 23:26:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1533 [2020-10-26 23:26:27,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:27,988 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:27,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 23:26:27,988 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:27,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:27,989 INFO L82 PathProgramCache]: Analyzing trace with hash 71486264, now seen corresponding path program 1 times [2020-10-26 23:26:27,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:27,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967220696] [2020-10-26 23:26:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:28,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:33,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:33,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1566 [2020-10-26 23:26:33,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:26:33,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5160 [2020-10-26 23:26:33,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:33,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-26 23:26:33,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 299 [2020-10-26 23:26:33,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:33,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:33,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:33,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:33,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:33,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:33,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:26:33,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:33,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:33,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:33,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:33,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:33,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:33,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:33,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:33,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:33,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:26:33,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:33,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:33,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:33,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:33,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:33,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:33,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:33,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:26:33,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:33,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:33,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:33,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:33,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:33,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:33,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:33,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:33,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:26:33,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:33,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:26:33,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:33,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:33,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:26:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:33,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:33,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:33,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:26:33,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:26:33,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:33,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:33,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:33,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:26:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:33,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:34,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:34,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:26:34,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:34,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:26:34,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:34,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:26:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:34,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:34,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:26:34,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:34,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:26:34,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:34,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:26:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:34,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:34,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:34,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:26:34,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:26:34,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:34,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:34,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:26:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:34,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:34,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:34,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:26:34,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:34,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:26:34,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:34,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:34,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:26:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:34,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:34,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:34,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:26:34,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:26:34,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-26 23:26:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:34,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-26 23:26:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:34,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:34,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:34,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-26 23:26:34,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:34,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-26 23:26:34,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:34,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:34,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:34,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-26 23:26:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:34,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-26 23:26:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:34,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:35,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:35,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:26:35,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:35,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 23:26:35,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:26:35,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:35,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1409 [2020-10-26 23:26:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:35,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:35,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:35,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-26 23:26:35,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:35,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:26:35,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-26 23:26:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7134 backedges. 2313 proven. 206 refuted. 0 times theorem prover too weak. 4615 trivial. 0 not checked. [2020-10-26 23:26:36,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967220696] [2020-10-26 23:26:36,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:36,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:36,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005506910] [2020-10-26 23:26:36,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:36,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:36,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:36,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:36,661 INFO L87 Difference]: Start difference. First operand 9973 states and 10722 transitions. Second operand 7 states. [2020-10-26 23:26:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:39,917 INFO L93 Difference]: Finished difference Result 19758 states and 21259 transitions. [2020-10-26 23:26:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:26:39,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1532 [2020-10-26 23:26:39,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:39,933 INFO L225 Difference]: With dead ends: 19758 [2020-10-26 23:26:39,934 INFO L226 Difference]: Without dead ends: 10157 [2020-10-26 23:26:39,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:26:39,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10157 states. [2020-10-26 23:26:40,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10157 to 9609. [2020-10-26 23:26:40,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9609 states. [2020-10-26 23:26:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9609 states to 9609 states and 10248 transitions. [2020-10-26 23:26:40,100 INFO L78 Accepts]: Start accepts. Automaton has 9609 states and 10248 transitions. Word has length 1532 [2020-10-26 23:26:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:40,101 INFO L481 AbstractCegarLoop]: Abstraction has 9609 states and 10248 transitions. [2020-10-26 23:26:40,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:40,102 INFO L276 IsEmpty]: Start isEmpty. Operand 9609 states and 10248 transitions. [2020-10-26 23:26:40,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1599 [2020-10-26 23:26:40,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:40,126 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:40,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 23:26:40,126 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:40,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:40,127 INFO L82 PathProgramCache]: Analyzing trace with hash -182200964, now seen corresponding path program 1 times [2020-10-26 23:26:40,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:40,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762555175] [2020-10-26 23:26:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:40,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:42,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:45,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:45,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1632 [2020-10-26 23:26:45,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:26:45,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-26 23:26:45,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1497 [2020-10-26 23:26:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 23:26:45,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:45,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:45,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:45,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:45,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:26:45,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:45,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:45,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:45,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:45,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:45,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:26:45,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:45,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:45,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:45,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:45,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:46,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:26:46,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:26:46,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:26:46,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:26:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:26:46,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:26:46,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:26:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:26:46,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:26:46,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:26:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:26:46,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:26:46,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:26:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:26:46,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:26:46,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:26:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:26:46,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:26:46,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:26:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:26:46,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:26:46,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-26 23:26:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-26 23:26:46,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:26:46,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-26 23:26:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-26 23:26:46,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:26:46,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-26 23:26:46,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1475 [2020-10-26 23:26:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:47,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:47,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-26 23:26:47,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:26:47,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-26 23:26:47,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-26 23:26:47,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0