/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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:22:19,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:22:19,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:22:19,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:22:19,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:22:19,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:22:19,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:22:19,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:22:19,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:22:19,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:22:19,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:22:19,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:22:19,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:22:19,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:22:19,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:22:19,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:22:19,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:22:19,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:22:20,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:22:20,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:22:20,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:22:20,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:22:20,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:22:20,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:22:20,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:22:20,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:22:20,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:22:20,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:22:20,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:22:20,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:22:20,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:22:20,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:22:20,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:22:20,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:22:20,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:22:20,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:22:20,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:22:20,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:22:20,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:22:20,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:22:20,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:22:20,044 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 23:22:20,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:22:20,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:22:20,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:22:20,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:22:20,103 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:22:20,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:22:20,103 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:22:20,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:22:20,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:22:20,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:22:20,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:22:20,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:22:20,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:22:20,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:22:20,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:22:20,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:22:20,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:22:20,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:22:20,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:22:20,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:22:20,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:22:20,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:22:20,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:22:20,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:22:20,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:22:20,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:22:20,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:22:20,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:22:20,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:22:20,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:22:20,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:22:20,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:22:20,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:22:20,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:22:20,581 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:22:20,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label10.c [2020-10-26 23:22:20,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7888f4f5d/e4bb921599fc492db80b20c6486b6c3a/FLAG46c08789f [2020-10-26 23:22:21,433 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:22:21,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label10.c [2020-10-26 23:22:21,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7888f4f5d/e4bb921599fc492db80b20c6486b6c3a/FLAG46c08789f [2020-10-26 23:22:21,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7888f4f5d/e4bb921599fc492db80b20c6486b6c3a [2020-10-26 23:22:21,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:22:21,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:22:21,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:22:21,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:22:21,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:22:21,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:22:21" (1/1) ... [2020-10-26 23:22:21,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767379e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:21, skipping insertion in model container [2020-10-26 23:22:21,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:22:21" (1/1) ... [2020-10-26 23:22:21,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:22:21,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:22:22,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:22:22,281 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:22:22,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:22:22,470 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:22:22,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:22 WrapperNode [2020-10-26 23:22:22,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:22:22,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:22:22,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:22:22,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:22:22,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:22" (1/1) ... [2020-10-26 23:22:22,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:22" (1/1) ... [2020-10-26 23:22:22,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:22" (1/1) ... [2020-10-26 23:22:22,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:22" (1/1) ... [2020-10-26 23:22:22,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:22" (1/1) ... [2020-10-26 23:22:22,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:22" (1/1) ... [2020-10-26 23:22:22,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:22" (1/1) ... [2020-10-26 23:22:22,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:22:22,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:22:22,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:22:22,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:22:22,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:22" (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 23:22:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:22:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:22:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:22:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:22:22,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:22:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:22:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:22:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:22:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:22:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:22:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:22:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:22:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:22:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:22:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:22:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:22:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:22:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:22:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:22:24,447 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:22:24,447 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:22:24,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:22:24 BoogieIcfgContainer [2020-10-26 23:22:24,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:22:24,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:22:24,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:22:24,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:22:24,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:22:21" (1/3) ... [2020-10-26 23:22:24,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dbda61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:22:24, skipping insertion in model container [2020-10-26 23:22:24,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:22" (2/3) ... [2020-10-26 23:22:24,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dbda61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:22:24, skipping insertion in model container [2020-10-26 23:22:24,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:22:24" (3/3) ... [2020-10-26 23:22:24,459 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label10.c [2020-10-26 23:22:24,471 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:22:24,477 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:22:24,491 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:22:24,523 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:22:24,524 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:22:24,524 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:22:24,524 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:22:24,524 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:22:24,524 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:22:24,524 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:22:24,525 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:22:24,550 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:22:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-26 23:22:24,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:24,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:24,560 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:24,567 INFO L82 PathProgramCache]: Analyzing trace with hash 260681158, now seen corresponding path program 1 times [2020-10-26 23:22:24,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:24,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400374554] [2020-10-26 23:22:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:25,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:25,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-26 23:22:25,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:25,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-26 23:22:25,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:22:25,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:22:25,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:25,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:25,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:25,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:25,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:22:25,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:25,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:25,592 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 23:22:25,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400374554] [2020-10-26 23:22:25,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:22:25,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:22:25,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418002803] [2020-10-26 23:22:25,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:22:25,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:25,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:22:25,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:22:25,620 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-26 23:22:28,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:28,803 INFO L93 Difference]: Finished difference Result 891 states and 1619 transitions. [2020-10-26 23:22:28,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:22:28,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-26 23:22:28,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:28,832 INFO L225 Difference]: With dead ends: 891 [2020-10-26 23:22:28,833 INFO L226 Difference]: Without dead ends: 565 [2020-10-26 23:22:28,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:28,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-26 23:22:28,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 559. [2020-10-26 23:22:28,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-26 23:22:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 907 transitions. [2020-10-26 23:22:28,979 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 907 transitions. Word has length 35 [2020-10-26 23:22:28,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:28,979 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 907 transitions. [2020-10-26 23:22:28,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:22:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 907 transitions. [2020-10-26 23:22:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-26 23:22:28,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:28,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:22:28,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:22:28,988 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:28,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:28,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1515399673, now seen corresponding path program 1 times [2020-10-26 23:22:28,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:28,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134135888] [2020-10-26 23:22:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:29,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:30,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:30,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:22:30,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1106 [2020-10-26 23:22:30,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:30,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:22:30,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:22:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:30,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:30,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:30,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:30,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:30,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:22:30,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:30,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:22:30,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:30,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:30,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:30,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:22:30,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:30,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:22:30,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:30,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:30,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:30,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:22:30,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:22:30,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134135888] [2020-10-26 23:22:30,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:22:30,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:22:30,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846361182] [2020-10-26 23:22:30,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:30,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:30,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:30,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:30,704 INFO L87 Difference]: Start difference. First operand 559 states and 907 transitions. Second operand 7 states. [2020-10-26 23:22:33,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:33,621 INFO L93 Difference]: Finished difference Result 1740 states and 3017 transitions. [2020-10-26 23:22:33,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:22:33,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-26 23:22:33,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:33,637 INFO L225 Difference]: With dead ends: 1740 [2020-10-26 23:22:33,637 INFO L226 Difference]: Without dead ends: 1187 [2020-10-26 23:22:33,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 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 23:22:33,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-10-26 23:22:33,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 565. [2020-10-26 23:22:33,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2020-10-26 23:22:33,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 836 transitions. [2020-10-26 23:22:33,722 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 836 transitions. Word has length 104 [2020-10-26 23:22:33,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:33,722 INFO L481 AbstractCegarLoop]: Abstraction has 565 states and 836 transitions. [2020-10-26 23:22:33,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:33,722 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 836 transitions. [2020-10-26 23:22:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-26 23:22:33,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:33,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:33,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:22:33,731 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:33,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:33,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1555127278, now seen corresponding path program 1 times [2020-10-26 23:22:33,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:33,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284790427] [2020-10-26 23:22:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:33,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:34,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:35,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:36,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:38,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:38,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-26 23:22:38,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:22:38,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4984 [2020-10-26 23:22:38,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 23:22:38,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:38,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:38,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:38,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:38,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:38,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:38,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:22:38,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:38,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:38,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:22:38,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:39,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:39,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:39,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:22:39,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:39,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 23:22:39,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:22:39,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-26 23:22:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:39,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:39,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:39,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:22:39,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:39,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:22:39,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:22:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 54 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:22:39,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284790427] [2020-10-26 23:22:39,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:39,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:22:39,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537760975] [2020-10-26 23:22:39,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:39,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:39,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:39,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:39,382 INFO L87 Difference]: Start difference. First operand 565 states and 836 transitions. Second operand 7 states. [2020-10-26 23:22:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:42,022 INFO L93 Difference]: Finished difference Result 1532 states and 2290 transitions. [2020-10-26 23:22:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:22:42,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-10-26 23:22:42,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:42,030 INFO L225 Difference]: With dead ends: 1532 [2020-10-26 23:22:42,030 INFO L226 Difference]: Without dead ends: 973 [2020-10-26 23:22:42,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:22:42,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-10-26 23:22:42,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 947. [2020-10-26 23:22:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-10-26 23:22:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1256 transitions. [2020-10-26 23:22:42,069 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1256 transitions. Word has length 188 [2020-10-26 23:22:42,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:42,070 INFO L481 AbstractCegarLoop]: Abstraction has 947 states and 1256 transitions. [2020-10-26 23:22:42,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:42,070 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1256 transitions. [2020-10-26 23:22:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-26 23:22:42,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:42,074 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:42,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:22:42,075 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:42,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:42,076 INFO L82 PathProgramCache]: Analyzing trace with hash 956830558, now seen corresponding path program 1 times [2020-10-26 23:22:42,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:42,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956080028] [2020-10-26 23:22:42,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:42,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:42,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:46,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:46,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-26 23:22:46,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:46,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4752 [2020-10-26 23:22:46,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:46,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:46,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:22:46,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:46,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:46,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:46,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:46,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:46,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:46,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:22:46,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:47,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:47,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:47,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:47,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:47,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:47,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-26 23:22:47,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:47,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:47,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:47,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:22:47,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:47,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:22:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:47,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:47,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:47,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:47,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:47,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:22:47,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:47,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:47,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:22:47,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:47,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 54 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:22:47,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956080028] [2020-10-26 23:22:47,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:47,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:22:47,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150960436] [2020-10-26 23:22:47,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:47,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:47,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:47,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:47,411 INFO L87 Difference]: Start difference. First operand 947 states and 1256 transitions. Second operand 7 states. [2020-10-26 23:22:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:50,426 INFO L93 Difference]: Finished difference Result 2862 states and 3881 transitions. [2020-10-26 23:22:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:22:50,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-26 23:22:50,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:50,442 INFO L225 Difference]: With dead ends: 2862 [2020-10-26 23:22:50,443 INFO L226 Difference]: Without dead ends: 1921 [2020-10-26 23:22:50,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 23:22:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2020-10-26 23:22:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1905. [2020-10-26 23:22:50,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1905 states. [2020-10-26 23:22:50,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2470 transitions. [2020-10-26 23:22:50,529 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2470 transitions. Word has length 217 [2020-10-26 23:22:50,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:50,530 INFO L481 AbstractCegarLoop]: Abstraction has 1905 states and 2470 transitions. [2020-10-26 23:22:50,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:50,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2470 transitions. [2020-10-26 23:22:50,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-26 23:22:50,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:50,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:50,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:22:50,537 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:50,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:50,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1364168658, now seen corresponding path program 1 times [2020-10-26 23:22:50,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:50,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449958031] [2020-10-26 23:22:50,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:50,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:52,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:52,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-26 23:22:52,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:52,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2163 [2020-10-26 23:22:52,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:52,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:52,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:52,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 23:22:52,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:52,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:52,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:52,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:52,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:52,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:52,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:22:52,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:52,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:52,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:52,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:52,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:52,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:22:53,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:53,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-26 23:22:53,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:22:53,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:53,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-26 23:22:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:53,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:53,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:22:53,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:22:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 54 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:22:53,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449958031] [2020-10-26 23:22:53,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:53,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:22:53,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423419939] [2020-10-26 23:22:53,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:53,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:53,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:53,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:53,686 INFO L87 Difference]: Start difference. First operand 1905 states and 2470 transitions. Second operand 7 states. [2020-10-26 23:22:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:56,033 INFO L93 Difference]: Finished difference Result 4194 states and 5386 transitions. [2020-10-26 23:22:56,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:22:56,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-26 23:22:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:56,048 INFO L225 Difference]: With dead ends: 4194 [2020-10-26 23:22:56,048 INFO L226 Difference]: Without dead ends: 2295 [2020-10-26 23:22:56,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 23:22:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2020-10-26 23:22:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2273. [2020-10-26 23:22:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-10-26 23:22:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2859 transitions. [2020-10-26 23:22:56,126 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2859 transitions. Word has length 241 [2020-10-26 23:22:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:56,127 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 2859 transitions. [2020-10-26 23:22:56,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2859 transitions. [2020-10-26 23:22:56,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-26 23:22:56,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:56,134 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:22:56,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:22:56,134 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:56,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:56,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1274064477, now seen corresponding path program 1 times [2020-10-26 23:22:56,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:56,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128929226] [2020-10-26 23:22:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:56,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:56,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:57,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:57,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-26 23:22:57,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:57,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1789 [2020-10-26 23:22:57,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:22:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:22:57,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:58,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:58,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:58,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:58,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:22:58,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:58,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:58,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:58,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:22:58,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:58,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:22:58,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:22:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:58,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:22:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:58,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:58,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:58,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:58,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:22:58,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:58,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-26 23:22:58,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:22:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:58,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-26 23:22:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:58,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:58,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:58,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:58,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:58,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:22:58,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:22:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:58,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 166 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-26 23:22:58,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128929226] [2020-10-26 23:22:58,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:58,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:22:58,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583236913] [2020-10-26 23:22:58,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:58,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:58,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:58,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:58,953 INFO L87 Difference]: Start difference. First operand 2273 states and 2859 transitions. Second operand 7 states. [2020-10-26 23:23:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:00,994 INFO L93 Difference]: Finished difference Result 4264 states and 5473 transitions. [2020-10-26 23:23:00,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:23:00,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-26 23:23:00,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:01,008 INFO L225 Difference]: With dead ends: 4264 [2020-10-26 23:23:01,009 INFO L226 Difference]: Without dead ends: 2277 [2020-10-26 23:23:01,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:23:01,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2020-10-26 23:23:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2257. [2020-10-26 23:23:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2257 states. [2020-10-26 23:23:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 2506 transitions. [2020-10-26 23:23:01,085 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 2506 transitions. Word has length 325 [2020-10-26 23:23:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:01,085 INFO L481 AbstractCegarLoop]: Abstraction has 2257 states and 2506 transitions. [2020-10-26 23:23:01,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 2506 transitions. [2020-10-26 23:23:01,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-26 23:23:01,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:01,092 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:01,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:23:01,092 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:01,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:01,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1180768825, now seen corresponding path program 1 times [2020-10-26 23:23:01,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:01,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934668167] [2020-10-26 23:23:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:01,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:02,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:02,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-26 23:23:02,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:02,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-10-26 23:23:02,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:23:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:23:02,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:02,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:02,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:02,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:02,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:23:02,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:02,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:02,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:02,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:02,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:23:02,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:02,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:02,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:02,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:03,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:03,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:03,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 23:23:03,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:23:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:03,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:03,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:03,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:03,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:03,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:03,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:23:03,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:23:03,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-26 23:23:03,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934668167] [2020-10-26 23:23:03,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:03,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:03,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212003267] [2020-10-26 23:23:03,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:03,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:03,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:03,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:03,421 INFO L87 Difference]: Start difference. First operand 2257 states and 2506 transitions. Second operand 7 states. [2020-10-26 23:23:05,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:05,495 INFO L93 Difference]: Finished difference Result 4704 states and 5288 transitions. [2020-10-26 23:23:05,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:23:05,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-10-26 23:23:05,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:05,515 INFO L225 Difference]: With dead ends: 4704 [2020-10-26 23:23:05,515 INFO L226 Difference]: Without dead ends: 2819 [2020-10-26 23:23:05,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:23:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2020-10-26 23:23:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2809. [2020-10-26 23:23:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2809 states. [2020-10-26 23:23:05,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3101 transitions. [2020-10-26 23:23:05,605 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3101 transitions. Word has length 327 [2020-10-26 23:23:05,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:05,607 INFO L481 AbstractCegarLoop]: Abstraction has 2809 states and 3101 transitions. [2020-10-26 23:23:05,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:05,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3101 transitions. [2020-10-26 23:23:05,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-26 23:23:05,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:05,616 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:05,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:23:05,617 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:05,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:05,617 INFO L82 PathProgramCache]: Analyzing trace with hash -484444610, now seen corresponding path program 2 times [2020-10-26 23:23:05,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:05,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105180845] [2020-10-26 23:23:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:05,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:07,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:10,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:10,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-26 23:23:10,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:23:10,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:23:10,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:23:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:23:10,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 23:23:10,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:10,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:10,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:10,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:10,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:10,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:10,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:23:10,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:10,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:10,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:10,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:10,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:10,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:10,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:10,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:10,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:10,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:23:10,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:10,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:23:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:10,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:11,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:11,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:11,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:11,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:23:11,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:23:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:11,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:11,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:11,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:11,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:11,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:11,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-26 23:23:11,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:11,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:11,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:11,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:23:11,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:11,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:23:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:11,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:11,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:11,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:23:11,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:11,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:23:11,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 468 proven. 6 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-26 23:23:11,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105180845] [2020-10-26 23:23:11,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:11,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:11,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573952039] [2020-10-26 23:23:11,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:11,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:11,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:11,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:11,865 INFO L87 Difference]: Start difference. First operand 2809 states and 3101 transitions. Second operand 7 states. [2020-10-26 23:23:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:13,961 INFO L93 Difference]: Finished difference Result 5810 states and 6471 transitions. [2020-10-26 23:23:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:13,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 437 [2020-10-26 23:23:13,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:13,987 INFO L225 Difference]: With dead ends: 5810 [2020-10-26 23:23:13,988 INFO L226 Difference]: Without dead ends: 3373 [2020-10-26 23:23:13,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 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 23:23:14,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2020-10-26 23:23:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3173. [2020-10-26 23:23:14,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3173 states. [2020-10-26 23:23:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 3451 transitions. [2020-10-26 23:23:14,091 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 3451 transitions. Word has length 437 [2020-10-26 23:23:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:14,092 INFO L481 AbstractCegarLoop]: Abstraction has 3173 states and 3451 transitions. [2020-10-26 23:23:14,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 3451 transitions. [2020-10-26 23:23:14,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2020-10-26 23:23:14,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:14,106 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:14,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:23:14,106 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:14,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:14,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1973664349, now seen corresponding path program 1 times [2020-10-26 23:23:14,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:14,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711270019] [2020-10-26 23:23:14,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:14,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:16,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 616 [2020-10-26 23:23:19,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:23:19,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 23:23:19,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:23:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:23:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:19,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:23:19,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:19,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:19,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:23:19,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:19,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:19,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:23:19,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:19,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:23:19,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:19,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:23:19,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:23:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:23:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:19,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:23:19,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 23:23:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:19,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-26 23:23:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:19,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:23:19,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:19,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:23:19,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:19,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 369 proven. 179 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2020-10-26 23:23:20,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711270019] [2020-10-26 23:23:20,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:20,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:20,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703616081] [2020-10-26 23:23:20,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:20,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:20,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:20,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:20,172 INFO L87 Difference]: Start difference. First operand 3173 states and 3451 transitions. Second operand 7 states. [2020-10-26 23:23:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:23,404 INFO L93 Difference]: Finished difference Result 6926 states and 7662 transitions. [2020-10-26 23:23:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:23,405 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 596 [2020-10-26 23:23:23,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:23,425 INFO L225 Difference]: With dead ends: 6926 [2020-10-26 23:23:23,426 INFO L226 Difference]: Without dead ends: 4125 [2020-10-26 23:23:23,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 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 23:23:23,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4125 states. [2020-10-26 23:23:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4125 to 4111. [2020-10-26 23:23:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4111 states. [2020-10-26 23:23:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4111 states to 4111 states and 4537 transitions. [2020-10-26 23:23:23,568 INFO L78 Accepts]: Start accepts. Automaton has 4111 states and 4537 transitions. Word has length 596 [2020-10-26 23:23:23,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:23,569 INFO L481 AbstractCegarLoop]: Abstraction has 4111 states and 4537 transitions. [2020-10-26 23:23:23,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:23,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4111 states and 4537 transitions. [2020-10-26 23:23:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-10-26 23:23:23,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:23,589 INFO L422 BasicCegarLoop]: trace histogram [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, 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 23:23:23,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:23:23,590 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:23,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:23,590 INFO L82 PathProgramCache]: Analyzing trace with hash 650080147, now seen corresponding path program 1 times [2020-10-26 23:23:23,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:23,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734950933] [2020-10-26 23:23:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:23,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:24,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:26,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:26,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 623 [2020-10-26 23:23:26,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:26,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2452 [2020-10-26 23:23:26,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:26,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:26,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:23:26,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:23:26,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:26,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:26,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:26,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:26,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:26,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:23:26,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:26,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:26,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:26,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:26,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:26,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:23:26,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:26,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:26,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:26,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:26,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:26,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:26,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:23:26,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:26,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:26,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:26,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:26,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:26,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:23:26,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:26,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:26,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:26,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:26,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:26,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:26,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 23:23:26,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:23:26,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:26,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:23:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:26,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:26,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:26,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:26,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:26,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:23:26,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:26,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:23:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 430 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:23:27,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734950933] [2020-10-26 23:23:27,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:27,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:27,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577770014] [2020-10-26 23:23:27,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:27,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:27,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:27,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:27,140 INFO L87 Difference]: Start difference. First operand 4111 states and 4537 transitions. Second operand 7 states. [2020-10-26 23:23:30,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:30,119 INFO L93 Difference]: Finished difference Result 8057 states and 8939 transitions. [2020-10-26 23:23:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:23:30,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 603 [2020-10-26 23:23:30,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:30,139 INFO L225 Difference]: With dead ends: 8057 [2020-10-26 23:23:30,139 INFO L226 Difference]: Without dead ends: 4318 [2020-10-26 23:23:30,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:23:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4318 states. [2020-10-26 23:23:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4318 to 4297. [2020-10-26 23:23:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4297 states. [2020-10-26 23:23:30,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 4733 transitions. [2020-10-26 23:23:30,277 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 4733 transitions. Word has length 603 [2020-10-26 23:23:30,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:30,278 INFO L481 AbstractCegarLoop]: Abstraction has 4297 states and 4733 transitions. [2020-10-26 23:23:30,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:30,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 4733 transitions. [2020-10-26 23:23:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2020-10-26 23:23:30,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:30,286 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:23:30,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:23:30,286 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:30,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:30,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1221367026, now seen corresponding path program 1 times [2020-10-26 23:23:30,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:30,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136596423] [2020-10-26 23:23:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:30,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:31,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:34,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:34,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 701 [2020-10-26 23:23:34,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:23:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3812 [2020-10-26 23:23:34,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:23:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:23:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:34,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:34,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:34,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:34,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:34,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:23:34,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:34,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:34,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:34,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:34,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:34,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:23:34,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:34,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:34,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:34,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:34,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:34,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:34,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:23:34,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:34,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:34,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:34,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:34,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:34,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:34,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:23:34,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:34,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:34,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:34,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:34,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:23:34,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:23:34,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:34,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:23:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:34,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:34,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:23:34,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:34,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:23:34,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:34,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:34,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:23:34,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-26 23:23:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:34,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:34,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:34,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:34,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:23:34,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:34,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:34,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:23:34,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:34,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1495 backedges. 485 proven. 72 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-26 23:23:35,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136596423] [2020-10-26 23:23:35,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:35,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:35,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614382338] [2020-10-26 23:23:35,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:35,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:35,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:35,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:35,245 INFO L87 Difference]: Start difference. First operand 4297 states and 4733 transitions. Second operand 7 states. [2020-10-26 23:23:37,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:37,597 INFO L93 Difference]: Finished difference Result 9336 states and 10498 transitions. [2020-10-26 23:23:37,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:37,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 679 [2020-10-26 23:23:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:37,626 INFO L225 Difference]: With dead ends: 9336 [2020-10-26 23:23:37,626 INFO L226 Difference]: Without dead ends: 5411 [2020-10-26 23:23:37,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2020-10-26 23:23:37,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5219. [2020-10-26 23:23:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5219 states. [2020-10-26 23:23:37,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 5755 transitions. [2020-10-26 23:23:37,778 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 5755 transitions. Word has length 679 [2020-10-26 23:23:37,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:37,779 INFO L481 AbstractCegarLoop]: Abstraction has 5219 states and 5755 transitions. [2020-10-26 23:23:37,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 5755 transitions. [2020-10-26 23:23:37,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2020-10-26 23:23:37,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:37,789 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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] [2020-10-26 23:23:37,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:23:37,789 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash 786787246, now seen corresponding path program 1 times [2020-10-26 23:23:37,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:37,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002363924] [2020-10-26 23:23:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:38,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:42,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:42,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 760 [2020-10-26 23:23:42,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:23:42,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:23:42,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:42,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:23:42,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:23:42,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:23:42,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:43,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:43,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:43,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:43,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:23:43,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:43,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:43,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:43,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:43,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:43,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:23:43,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:43,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:43,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:43,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:43,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:43,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:43,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:43,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:23:43,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:43,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:43,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:43,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:43,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:43,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:43,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:43,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:23:43,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:43,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:43,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:43,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:23:43,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:43,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:44,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:44,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:23:44,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-26 23:23:44,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:23:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:23:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:44,909 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-10-26 23:23:45,138 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-26 23:23:45,364 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-26 23:23:45,609 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-26 23:23:45,856 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-26 23:23:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:23:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:23:46,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:23:46,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:46,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:23:46,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:46,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-26 23:23:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:23:46,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:23:46,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-26 23:23:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 523 proven. 186 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2020-10-26 23:23:48,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002363924] [2020-10-26 23:23:48,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:48,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:23:48,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551021657] [2020-10-26 23:23:48,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:23:48,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:48,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:23:48,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:23:48,273 INFO L87 Difference]: Start difference. First operand 5219 states and 5755 transitions. Second operand 13 states. [2020-10-26 23:23:49,424 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2020-10-26 23:23:50,219 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-10-26 23:23:50,681 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-10-26 23:23:50,982 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2020-10-26 23:23:51,333 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2020-10-26 23:23:51,688 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 113 [2020-10-26 23:23:52,033 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-10-26 23:23:52,279 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-26 23:23:53,184 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2020-10-26 23:23:53,938 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2020-10-26 23:23:54,428 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2020-10-26 23:23:54,778 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 92 [2020-10-26 23:23:55,155 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2020-10-26 23:23:55,543 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 95 [2020-10-26 23:23:56,114 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-26 23:23:56,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:56,692 INFO L93 Difference]: Finished difference Result 10800 states and 11948 transitions. [2020-10-26 23:23:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:23:56,697 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 738 [2020-10-26 23:23:56,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:56,728 INFO L225 Difference]: With dead ends: 10800 [2020-10-26 23:23:56,728 INFO L226 Difference]: Without dead ends: 5853 [2020-10-26 23:23:56,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2020-10-26 23:23:56,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5853 states. [2020-10-26 23:23:56,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5853 to 5617. [2020-10-26 23:23:56,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5617 states. [2020-10-26 23:23:56,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5617 states to 5617 states and 6165 transitions. [2020-10-26 23:23:56,885 INFO L78 Accepts]: Start accepts. Automaton has 5617 states and 6165 transitions. Word has length 738 [2020-10-26 23:23:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:56,886 INFO L481 AbstractCegarLoop]: Abstraction has 5617 states and 6165 transitions. [2020-10-26 23:23:56,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:23:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5617 states and 6165 transitions. [2020-10-26 23:23:56,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2020-10-26 23:23:56,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:56,896 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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 23:23:56,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:23:56,896 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:56,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:56,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1410991116, now seen corresponding path program 1 times [2020-10-26 23:23:56,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:56,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348898493] [2020-10-26 23:23:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:57,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:57,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:00,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 798 [2020-10-26 23:24:00,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3196 [2020-10-26 23:24:00,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:24:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:24:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:00,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:00,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:00,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:00,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:24:00,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:00,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:00,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:00,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:00,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:00,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:00,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:00,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:00,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:00,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:24:00,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:00,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:00,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:00,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:00,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:00,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:00,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:00,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:00,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:00,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:00,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:00,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:24:00,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:00,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:00,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:00,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:00,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:24:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:00,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:00,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:24:00,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:00,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:24:00,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:00,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:24:00,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:00,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:24:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:00,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:00,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:24:00,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:00,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:24:00,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:24:00,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 532 proven. 2 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-26 23:24:01,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348898493] [2020-10-26 23:24:01,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:01,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:01,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431881159] [2020-10-26 23:24:01,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:01,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:01,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:01,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:01,505 INFO L87 Difference]: Start difference. First operand 5617 states and 6165 transitions. Second operand 7 states. [2020-10-26 23:24:03,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:03,637 INFO L93 Difference]: Finished difference Result 11048 states and 12158 transitions. [2020-10-26 23:24:03,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:24:03,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 776 [2020-10-26 23:24:03,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:03,660 INFO L225 Difference]: With dead ends: 11048 [2020-10-26 23:24:03,661 INFO L226 Difference]: Without dead ends: 5803 [2020-10-26 23:24:03,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:24:03,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5803 states. [2020-10-26 23:24:03,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5803 to 5619. [2020-10-26 23:24:03,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5619 states. [2020-10-26 23:24:03,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5619 states to 5619 states and 6158 transitions. [2020-10-26 23:24:03,804 INFO L78 Accepts]: Start accepts. Automaton has 5619 states and 6158 transitions. Word has length 776 [2020-10-26 23:24:03,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:03,805 INFO L481 AbstractCegarLoop]: Abstraction has 5619 states and 6158 transitions. [2020-10-26 23:24:03,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:03,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5619 states and 6158 transitions. [2020-10-26 23:24:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-26 23:24:03,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:03,816 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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 23:24:03,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:24:03,816 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:03,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:03,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1418678187, now seen corresponding path program 1 times [2020-10-26 23:24:03,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:03,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504138992] [2020-10-26 23:24:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:04,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:04,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:04,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 843 [2020-10-26 23:24:04,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:04,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 983 [2020-10-26 23:24:04,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 806 [2020-10-26 23:24:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 23:24:04,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:05,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:05,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:05,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:24:05,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:05,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:24:05,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:05,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:24:05,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:05,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:24:05,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:05,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:24:05,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:05,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:24:05,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:24:05,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:24:05,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:24:05,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2161 backedges. 200 proven. 7 refuted. 0 times theorem prover too weak. 1954 trivial. 0 not checked. [2020-10-26 23:24:06,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504138992] [2020-10-26 23:24:06,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:06,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:24:06,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68510847] [2020-10-26 23:24:06,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:24:06,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:06,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:24:06,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:24:06,382 INFO L87 Difference]: Start difference. First operand 5619 states and 6158 transitions. Second operand 6 states. [2020-10-26 23:24:09,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:09,103 INFO L93 Difference]: Finished difference Result 11048 states and 12126 transitions. [2020-10-26 23:24:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:24:09,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 819 [2020-10-26 23:24:09,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:09,126 INFO L225 Difference]: With dead ends: 11048 [2020-10-26 23:24:09,126 INFO L226 Difference]: Without dead ends: 5433 [2020-10-26 23:24:09,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:24:09,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2020-10-26 23:24:09,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 4881. [2020-10-26 23:24:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4881 states. [2020-10-26 23:24:09,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4881 states to 4881 states and 5322 transitions. [2020-10-26 23:24:09,260 INFO L78 Accepts]: Start accepts. Automaton has 4881 states and 5322 transitions. Word has length 819 [2020-10-26 23:24:09,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:09,261 INFO L481 AbstractCegarLoop]: Abstraction has 4881 states and 5322 transitions. [2020-10-26 23:24:09,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:24:09,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4881 states and 5322 transitions. [2020-10-26 23:24:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2020-10-26 23:24:09,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:09,285 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 5, 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, 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 23:24:09,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:24:09,286 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:09,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:09,287 INFO L82 PathProgramCache]: Analyzing trace with hash -711596757, now seen corresponding path program 1 times [2020-10-26 23:24:09,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:09,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009856846] [2020-10-26 23:24:09,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:09,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:09,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:13,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1144 [2020-10-26 23:24:14,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:24:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5162 [2020-10-26 23:24:14,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:24:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:24:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-26 23:24:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:14,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:14,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:14,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:14,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:14,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:14,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:14,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:14,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:24:14,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:15,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:15,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:15,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:15,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:24:15,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:15,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:15,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:15,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:15,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:15,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:15,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:24:15,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:15,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:15,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:15,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:15,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:15,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:15,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:15,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:15,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:24:15,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:15,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:15,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:15,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:15,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:15,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:15,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:15,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:24:15,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:15,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:15,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:15,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:15,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:15,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:15,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:15,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:15,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:15,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:15,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:24:15,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:15,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:15,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:15,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:24:15,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:15,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:15,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:15,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:15,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-26 23:24:15,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:24:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:24:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:24:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:15,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:15,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:24:15,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:24:15,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:15,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:24:15,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:15,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 936 [2020-10-26 23:24:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:15,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:15,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 23:24:15,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:15,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:24:15,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-26 23:24:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3709 backedges. 1415 proven. 230 refuted. 0 times theorem prover too weak. 2064 trivial. 0 not checked. [2020-10-26 23:24:16,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009856846] [2020-10-26 23:24:16,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:16,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:24:16,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428382701] [2020-10-26 23:24:16,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:24:16,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:16,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:24:16,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:24:16,767 INFO L87 Difference]: Start difference. First operand 4881 states and 5322 transitions. Second operand 9 states. [2020-10-26 23:24:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:20,731 INFO L93 Difference]: Finished difference Result 11980 states and 13278 transitions. [2020-10-26 23:24:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:24:20,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1116 [2020-10-26 23:24:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:20,755 INFO L225 Difference]: With dead ends: 11980 [2020-10-26 23:24:20,755 INFO L226 Difference]: Without dead ends: 7289 [2020-10-26 23:24:20,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-26 23:24:20,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7289 states. [2020-10-26 23:24:20,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7289 to 7101. [2020-10-26 23:24:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7101 states. [2020-10-26 23:24:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7101 states to 7101 states and 7843 transitions. [2020-10-26 23:24:20,926 INFO L78 Accepts]: Start accepts. Automaton has 7101 states and 7843 transitions. Word has length 1116 [2020-10-26 23:24:20,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:20,927 INFO L481 AbstractCegarLoop]: Abstraction has 7101 states and 7843 transitions. [2020-10-26 23:24:20,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:24:20,927 INFO L276 IsEmpty]: Start isEmpty. Operand 7101 states and 7843 transitions. [2020-10-26 23:24:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2020-10-26 23:24:20,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:20,954 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:20,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:24:20,954 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:20,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1245077377, now seen corresponding path program 1 times [2020-10-26 23:24:20,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:20,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530157199] [2020-10-26 23:24:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:24,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:26,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:26,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1230 [2020-10-26 23:24:26,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:24:26,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-26 23:24:26,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:24:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:24:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:24:26,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:26,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:26,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:26,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:26,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:26,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:24:26,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:26,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:26,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:26,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:26,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:26,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:26,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:26,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:26,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:26,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:26,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:24:26,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:26,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:26,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:26,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:26,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:26,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:26,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:26,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:24:26,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:26,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:26,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:26,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:26,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:26,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:26,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:26,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:26,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:24:26,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:26,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:26,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:26,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:26,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:26,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:26,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:26,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:26,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:26,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:26,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:24:26,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:26,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:24:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:26,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:26,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:27,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:27,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:24:27,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:27,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-26 23:24:27,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:24:27,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:24:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:27,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:27,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:27,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:27,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:27,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:24:27,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:24:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:27,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 943 [2020-10-26 23:24:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:27,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:27,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:27,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:24:27,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:27,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:24:27,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:27,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:27,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:24:27,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:27,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:27,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1022 [2020-10-26 23:24:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:27,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:27,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 23:24:27,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:27,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:24:27,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-26 23:24:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:27,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 887 proven. 387 refuted. 0 times theorem prover too weak. 2800 trivial. 0 not checked. [2020-10-26 23:24:28,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530157199] [2020-10-26 23:24:28,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:28,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:24:28,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971420399] [2020-10-26 23:24:28,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:24:28,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:28,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:24:28,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:24:28,814 INFO L87 Difference]: Start difference. First operand 7101 states and 7843 transitions. Second operand 8 states. [2020-10-26 23:24:31,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:31,424 INFO L93 Difference]: Finished difference Result 14024 states and 15530 transitions. [2020-10-26 23:24:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:24:31,430 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1202 [2020-10-26 23:24:31,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:31,465 INFO L225 Difference]: With dead ends: 14024 [2020-10-26 23:24:31,465 INFO L226 Difference]: Without dead ends: 7113 [2020-10-26 23:24:31,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:24:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2020-10-26 23:24:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 7101. [2020-10-26 23:24:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7101 states. [2020-10-26 23:24:31,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7101 states to 7101 states and 7837 transitions. [2020-10-26 23:24:31,650 INFO L78 Accepts]: Start accepts. Automaton has 7101 states and 7837 transitions. Word has length 1202 [2020-10-26 23:24:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:31,651 INFO L481 AbstractCegarLoop]: Abstraction has 7101 states and 7837 transitions. [2020-10-26 23:24:31,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:24:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 7101 states and 7837 transitions. [2020-10-26 23:24:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1268 [2020-10-26 23:24:31,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:31,683 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 8, 8, 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, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:31,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:24:31,683 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:31,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:31,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2008614250, now seen corresponding path program 1 times [2020-10-26 23:24:31,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:31,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855310254] [2020-10-26 23:24:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:32,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:32,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:35,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:36,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:36,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1297 [2020-10-26 23:24:36,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:24:36,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 23:24:36,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:36,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:24:36,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:24:36,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 416 [2020-10-26 23:24:36,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:37,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:37,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:37,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:37,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:37,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:37,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:37,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:37,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:37,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:37,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:37,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:37,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:37,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:37,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:24:37,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:37,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:37,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:37,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:37,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:37,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:37,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:24:37,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:37,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:37,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:37,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:37,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:37,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:37,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:24:37,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:37,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:37,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:37,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:37,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:37,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:24:37,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:37,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:37,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:37,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:37,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:24:37,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:37,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:37,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:37,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:37,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:37,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:24:37,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:24:37,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:37,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:37,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:37,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:37,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:37,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:37,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-26 23:24:37,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:24:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:24:37,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:37,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:24:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:37,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:38,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:38,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:24:38,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:38,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:24:38,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:24:38,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:38,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:24:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:38,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:38,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:24:38,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:38,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-26 23:24:38,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:38,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:38,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:38,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:24:38,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:38,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1087 [2020-10-26 23:24:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:38,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:38,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:38,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 23:24:38,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:24:38,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-26 23:24:38,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:38,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4890 backedges. 2293 proven. 592 refuted. 0 times theorem prover too weak. 2005 trivial. 0 not checked. [2020-10-26 23:24:39,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855310254] [2020-10-26 23:24:39,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:39,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:24:39,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173026581] [2020-10-26 23:24:39,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:24:39,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:39,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:24:39,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:24:39,910 INFO L87 Difference]: Start difference. First operand 7101 states and 7837 transitions. Second operand 11 states. [2020-10-26 23:24:44,199 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-26 23:24:44,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:44,457 INFO L93 Difference]: Finished difference Result 14212 states and 15698 transitions. [2020-10-26 23:24:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 23:24:44,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1267 [2020-10-26 23:24:44,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:44,481 INFO L225 Difference]: With dead ends: 14212 [2020-10-26 23:24:44,482 INFO L226 Difference]: Without dead ends: 7301 [2020-10-26 23:24:44,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2020-10-26 23:24:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7301 states. [2020-10-26 23:24:44,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7301 to 7109. [2020-10-26 23:24:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7109 states. [2020-10-26 23:24:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7109 states to 7109 states and 7829 transitions. [2020-10-26 23:24:44,649 INFO L78 Accepts]: Start accepts. Automaton has 7109 states and 7829 transitions. Word has length 1267 [2020-10-26 23:24:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:44,651 INFO L481 AbstractCegarLoop]: Abstraction has 7109 states and 7829 transitions. [2020-10-26 23:24:44,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:24:44,651 INFO L276 IsEmpty]: Start isEmpty. Operand 7109 states and 7829 transitions. [2020-10-26 23:24:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1277 [2020-10-26 23:24:44,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:44,678 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 8, 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, 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, 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, 1] [2020-10-26 23:24:44,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:24:44,679 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:44,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:44,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1131318435, now seen corresponding path program 1 times [2020-10-26 23:24:44,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:44,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322575166] [2020-10-26 23:24:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:45,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:45,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:49,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:49,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:49,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1304 [2020-10-26 23:24:49,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:24:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-26 23:24:49,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:24:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:24:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:24:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:50,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:24:50,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:50,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:24:50,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:50,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:50,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:50,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,333 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: 118 [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: 21 [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 23:24:50,353 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 23:24:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:24:50,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:24:50,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:50,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:24:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:24:50,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:24:50,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:50,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:24:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:50,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:24:50,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:24:50,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:24:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:24:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:50,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:50,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:51,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:51,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:51,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-26 23:24:51,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:24:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:24:51,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:51,850 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-26 23:24:52,071 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-26 23:24:52,290 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-10-26 23:24:52,538 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-26 23:24:52,799 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-26 23:24:53,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:24:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:53,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:53,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:24:53,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:53,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:24:53,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:53,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:53,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:24:53,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:53,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:53,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-26 23:24:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:53,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:53,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:53,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 23:24:53,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:53,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:24:53,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-26 23:24:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:53,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4469 backedges. 1128 proven. 228 refuted. 0 times theorem prover too weak. 3113 trivial. 0 not checked. [2020-10-26 23:24:56,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322575166] [2020-10-26 23:24:56,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:56,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:24:56,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651730086] [2020-10-26 23:24:56,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:24:56,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:56,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:24:56,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:24:56,486 INFO L87 Difference]: Start difference. First operand 7109 states and 7829 transitions. Second operand 13 states. [2020-10-26 23:24:57,528 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-10-26 23:24:57,887 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-10-26 23:24:58,381 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-26 23:24:58,752 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-26 23:24:59,206 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-10-26 23:24:59,681 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-10-26 23:25:00,116 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 106 [2020-10-26 23:25:00,652 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-10-26 23:25:00,915 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-26 23:25:01,835 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2020-10-26 23:25:02,240 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2020-10-26 23:25:02,842 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2020-10-26 23:25:03,140 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2020-10-26 23:25:03,493 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-10-26 23:25:04,050 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-10-26 23:25:04,600 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 91 [2020-10-26 23:25:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:05,261 INFO L93 Difference]: Finished difference Result 14214 states and 15679 transitions. [2020-10-26 23:25:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 23:25:05,262 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1276 [2020-10-26 23:25:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:05,283 INFO L225 Difference]: With dead ends: 14214 [2020-10-26 23:25:05,284 INFO L226 Difference]: Without dead ends: 7275 [2020-10-26 23:25:05,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=269, Invalid=661, Unknown=0, NotChecked=0, Total=930 [2020-10-26 23:25:05,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7275 states. [2020-10-26 23:25:05,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7275 to 7273. [2020-10-26 23:25:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7273 states. [2020-10-26 23:25:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7273 states to 7273 states and 7997 transitions. [2020-10-26 23:25:05,446 INFO L78 Accepts]: Start accepts. Automaton has 7273 states and 7997 transitions. Word has length 1276 [2020-10-26 23:25:05,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:05,448 INFO L481 AbstractCegarLoop]: Abstraction has 7273 states and 7997 transitions. [2020-10-26 23:25:05,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:25:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 7273 states and 7997 transitions. [2020-10-26 23:25:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1364 [2020-10-26 23:25:05,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:05,480 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:25:05,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:25:05,481 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:05,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:05,481 INFO L82 PathProgramCache]: Analyzing trace with hash 335240517, now seen corresponding path program 1 times [2020-10-26 23:25:05,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:05,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745345180] [2020-10-26 23:25:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:05,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:05,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:06,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:09,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:10,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:10,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:10,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1395 [2020-10-26 23:25:10,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:25:10,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-26 23:25:10,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:10,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:25:10,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:25:10,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:25:10,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:10,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:10,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:10,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:10,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:10,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:25:10,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:10,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:10,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:10,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:10,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:10,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:10,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:10,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:25:10,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:10,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:10,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:10,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:10,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:11,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:11,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:11,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:11,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:11,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:11,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:25:11,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:11,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:11,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:11,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:11,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:11,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:11,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:11,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:11,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:11,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:11,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:25:11,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:11,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:11,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:11,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:11,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:11,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:11,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:11,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:11,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:11,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:11,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:25:11,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:11,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:11,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:11,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:11,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:11,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:11,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:25:11,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:11,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:11,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:11,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:25:11,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:11,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:25:11,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:11,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:11,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:11,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:25:11,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:11,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:25:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:11,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:11,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:11,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:25:11,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:11,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-26 23:25:11,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:25:11,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:11,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:25:11,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:11,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:25:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:11,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:11,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:11,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:25:11,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 23:25:11,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:25:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:11,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 925 [2020-10-26 23:25:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:11,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:11,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:11,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:11,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:11,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:25:11,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:11,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:11,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:25:11,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:11,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:11,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1104 [2020-10-26 23:25:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:11,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:12,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:12,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:25:12,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:12,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:12,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:25:12,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:12,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1183 [2020-10-26 23:25:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:12,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:12,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:12,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 23:25:12,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:12,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:25:12,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-26 23:25:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:12,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5759 backedges. 1614 proven. 741 refuted. 0 times theorem prover too weak. 3404 trivial. 0 not checked. [2020-10-26 23:25:13,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745345180] [2020-10-26 23:25:13,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:13,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:25:13,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604874499] [2020-10-26 23:25:13,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:25:13,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:13,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:25:13,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:25:13,419 INFO L87 Difference]: Start difference. First operand 7273 states and 7997 transitions. Second operand 10 states. [2020-10-26 23:25:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:16,818 INFO L93 Difference]: Finished difference Result 14428 states and 15901 transitions. [2020-10-26 23:25:16,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:25:16,819 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1363 [2020-10-26 23:25:16,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:16,838 INFO L225 Difference]: With dead ends: 14428 [2020-10-26 23:25:16,838 INFO L226 Difference]: Without dead ends: 7279 [2020-10-26 23:25:16,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:25:16,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7279 states. [2020-10-26 23:25:16,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7279 to 7089. [2020-10-26 23:25:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7089 states. [2020-10-26 23:25:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 7784 transitions. [2020-10-26 23:25:17,015 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 7784 transitions. Word has length 1363 [2020-10-26 23:25:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:17,016 INFO L481 AbstractCegarLoop]: Abstraction has 7089 states and 7784 transitions. [2020-10-26 23:25:17,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:25:17,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 7784 transitions. [2020-10-26 23:25:17,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1375 [2020-10-26 23:25:17,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:17,049 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 7, 6, 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, 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 23:25:17,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:25:17,050 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:17,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:17,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1650386761, now seen corresponding path program 1 times [2020-10-26 23:25:17,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:17,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954795208] [2020-10-26 23:25:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:17,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:17,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:22,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:22,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1406 [2020-10-26 23:25:22,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:25:22,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-26 23:25:22,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:22,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:22,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-26 23:25:22,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:25:22,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:22,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:22,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:22,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:22,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:22,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:22,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:25:22,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:22,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:22,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:22,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:22,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:22,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:22,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:22,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:22,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:22,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:22,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:22,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:22,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:22,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:22,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:22,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:22,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:22,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:22,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:22,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:22,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:22,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:22,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:22,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:22,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:22,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:22,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:25:22,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:22,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:22,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:22,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:22,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:25:22,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:22,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:22,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:22,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:22,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:22,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:25:22,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:22,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:25:22,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:22,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:22,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:25:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:22,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:22,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:22,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:25:22,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:22,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:25:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:22,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:22,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:22,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:25:22,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:22,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:25:22,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:22,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:23,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:25:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:23,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:23,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:25:23,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:23,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:25:23,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-26 23:25:23,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:23,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-26 23:25:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:23,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:23,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:23,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:25:23,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:23,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:25:23,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:25:23,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:23,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1194 [2020-10-26 23:25:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:23,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:23,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:23,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 23:25:23,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:23,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:25:23,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-26 23:25:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:23,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5799 backedges. 1054 proven. 78 refuted. 0 times theorem prover too weak. 4667 trivial. 0 not checked. [2020-10-26 23:25:24,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954795208] [2020-10-26 23:25:24,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:24,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:25:24,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911120199] [2020-10-26 23:25:24,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:25:24,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:24,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:25:24,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:25:24,237 INFO L87 Difference]: Start difference. First operand 7089 states and 7784 transitions. Second operand 7 states. [2020-10-26 23:25:26,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:26,614 INFO L93 Difference]: Finished difference Result 14709 states and 16235 transitions. [2020-10-26 23:25:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:25:26,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1374 [2020-10-26 23:25:26,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:26,637 INFO L225 Difference]: With dead ends: 14709 [2020-10-26 23:25:26,637 INFO L226 Difference]: Without dead ends: 7810 [2020-10-26 23:25:26,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:25:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7810 states. [2020-10-26 23:25:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7810 to 7724. [2020-10-26 23:25:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7724 states. [2020-10-26 23:25:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7724 states to 7724 states and 8464 transitions. [2020-10-26 23:25:26,818 INFO L78 Accepts]: Start accepts. Automaton has 7724 states and 8464 transitions. Word has length 1374 [2020-10-26 23:25:26,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:26,819 INFO L481 AbstractCegarLoop]: Abstraction has 7724 states and 8464 transitions. [2020-10-26 23:25:26,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:25:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 7724 states and 8464 transitions. [2020-10-26 23:25:26,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1397 [2020-10-26 23:25:26,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:26,858 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 7, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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 23:25:26,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:25:26,858 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:26,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:26,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1715485863, now seen corresponding path program 1 times [2020-10-26 23:25:26,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:26,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420339741] [2020-10-26 23:25:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:27,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:27,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:28,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:32,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:32,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1428 [2020-10-26 23:25:32,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:25:32,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:25:32,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:32,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:25:32,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:25:32,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:25:32,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:32,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:32,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:32,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:32,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:32,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:25:32,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:32,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:32,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:32,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:32,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:32,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:32,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:32,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:32,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:32,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:32,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:32,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:32,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:32,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:32,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:32,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:32,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:32,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:32,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:32,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:32,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:32,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:32,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:32,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:32,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:32,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:25:32,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:32,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:32,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:32,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:32,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:32,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:32,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:25:32,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:32,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:32,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:32,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:32,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:32,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:32,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:32,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:25:32,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:25:32,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:25:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:25:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:32,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:32,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:25:32,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:32,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:25:32,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:25:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:25:32,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:32,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:25:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:32,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:32,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:33,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:33,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:25:33,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:33,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 23:25:33,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:25:33,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 958 [2020-10-26 23:25:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:33,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:33,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:33,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:33,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:25:33,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:25:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:33,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1137 [2020-10-26 23:25:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:33,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:33,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:33,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:25:33,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:33,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:33,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:33,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:33,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:25:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:33,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:33,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1216 [2020-10-26 23:25:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:33,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:33,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:33,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 23:25:33,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:25:33,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-26 23:25:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5880 backedges. 1650 proven. 826 refuted. 0 times theorem prover too weak. 3404 trivial. 0 not checked. [2020-10-26 23:25:34,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420339741] [2020-10-26 23:25:34,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:34,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:25:34,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831441093] [2020-10-26 23:25:34,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:25:34,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:34,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:25:34,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:25:34,825 INFO L87 Difference]: Start difference. First operand 7724 states and 8464 transitions. Second operand 10 states. [2020-10-26 23:25:38,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:38,935 INFO L93 Difference]: Finished difference Result 15483 states and 16990 transitions. [2020-10-26 23:25:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:25:38,936 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1396 [2020-10-26 23:25:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:38,955 INFO L225 Difference]: With dead ends: 15483 [2020-10-26 23:25:38,955 INFO L226 Difference]: Without dead ends: 7916 [2020-10-26 23:25:38,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:25:38,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7916 states. [2020-10-26 23:25:39,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7916 to 7724. [2020-10-26 23:25:39,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7724 states. [2020-10-26 23:25:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7724 states to 7724 states and 8457 transitions. [2020-10-26 23:25:39,130 INFO L78 Accepts]: Start accepts. Automaton has 7724 states and 8457 transitions. Word has length 1396 [2020-10-26 23:25:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:39,131 INFO L481 AbstractCegarLoop]: Abstraction has 7724 states and 8457 transitions. [2020-10-26 23:25:39,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:25:39,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7724 states and 8457 transitions. [2020-10-26 23:25:39,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1398 [2020-10-26 23:25:39,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:39,164 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 7, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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 23:25:39,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:25:39,165 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:39,165 INFO L82 PathProgramCache]: Analyzing trace with hash 960488905, now seen corresponding path program 1 times [2020-10-26 23:25:39,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:39,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230649075] [2020-10-26 23:25:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:39,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:39,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:40,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:44,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:44,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1429 [2020-10-26 23:25:44,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:25:44,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-26 23:25:44,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:44,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:25:44,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 840 [2020-10-26 23:25:44,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-26 23:25:44,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:44,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:44,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:44,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:44,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:25:44,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:44,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:44,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:44,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:44,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:44,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:44,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:44,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:44,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:44,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:44,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:44,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:44,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:44,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:44,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:44,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:44,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:44,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:44,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:44,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:44,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:44,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:44,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:44,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:25:44,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:44,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:44,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:44,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:44,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:44,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:44,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:44,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:25:44,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:44,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:44,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:44,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:44,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:44,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:44,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:44,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:44,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:25:44,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:44,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:44,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:44,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:44,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:44,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:25:44,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:25:44,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:44,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:25:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:25:45,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:25:45,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:45,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-26 23:25:45,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:25:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:25:45,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:45,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-26 23:25:45,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:25:45,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 959 [2020-10-26 23:25:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:45,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:25:45,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:25:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:45,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1138 [2020-10-26 23:25:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:25:45,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:45,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:25:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:45,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1217 [2020-10-26 23:25:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 23:25:45,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:25:45,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [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