/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/Problem11_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:37:57,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:37:57,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:37:57,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:37:57,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:37:57,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:37:57,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:37:57,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:37:57,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:37:57,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:37:57,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:37:57,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:37:57,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:37:57,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:37:57,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:37:57,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:37:57,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:37:57,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:37:57,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:37:57,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:37:57,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:37:57,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:37:57,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:37:57,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:37:57,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:37:57,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:37:57,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:37:57,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:37:57,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:37:57,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:37:57,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:37:57,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:37:57,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:37:57,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:37:57,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:37:57,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:37:57,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:37:57,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:37:57,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:37:57,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:37:57,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:37:57,449 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 22:37:57,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:37:57,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:37:57,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:37:57,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:37:57,477 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:37:57,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:37:57,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:37:57,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:37:57,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:37:57,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:37:57,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:37:57,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:37:57,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:37:57,479 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:37:57,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:37:57,480 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:37:57,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:37:57,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:37:57,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:37:57,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:37:57,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:37:57,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:37:57,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:37:57,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:37:57,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:37:57,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:37:57,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:37:57,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:37:57,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:37:57,482 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:37:57,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:37:57,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:37:57,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:37:57,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:37:57,986 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:37:57,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19.c [2020-10-26 22:37:58,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b90cf0df/871ea0f7ac894628acc0b46fe28a625a/FLAGaee691c4c [2020-10-26 22:37:58,897 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:37:58,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label19.c [2020-10-26 22:37:58,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b90cf0df/871ea0f7ac894628acc0b46fe28a625a/FLAGaee691c4c [2020-10-26 22:37:59,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b90cf0df/871ea0f7ac894628acc0b46fe28a625a [2020-10-26 22:37:59,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:37:59,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:37:59,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:37:59,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:37:59,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:37:59,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:37:59" (1/1) ... [2020-10-26 22:37:59,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e863aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:37:59, skipping insertion in model container [2020-10-26 22:37:59,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:37:59" (1/1) ... [2020-10-26 22:37:59,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:37:59,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:37:59,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:37:59,812 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:38:00,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:38:00,081 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:38:00,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:00 WrapperNode [2020-10-26 22:38:00,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:38:00,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:38:00,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:38:00,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:38:00,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:00" (1/1) ... [2020-10-26 22:38:00,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:00" (1/1) ... [2020-10-26 22:38:00,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:00" (1/1) ... [2020-10-26 22:38:00,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:00" (1/1) ... [2020-10-26 22:38:00,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:00" (1/1) ... [2020-10-26 22:38:00,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:00" (1/1) ... [2020-10-26 22:38:00,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:00" (1/1) ... [2020-10-26 22:38:00,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:38:00,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:38:00,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:38:00,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:38:00,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:00" (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 22:38:00,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:38:00,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:38:00,389 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:38:00,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:38:00,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:38:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:38:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:38:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:38:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:38:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:38:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:38:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:38:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:38:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:38:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:38:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:38:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:38:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:38:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:38:02,485 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:38:02,485 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:38:02,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:38:02 BoogieIcfgContainer [2020-10-26 22:38:02,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:38:02,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:38:02,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:38:02,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:38:02,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:37:59" (1/3) ... [2020-10-26 22:38:02,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59db138d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:38:02, skipping insertion in model container [2020-10-26 22:38:02,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:00" (2/3) ... [2020-10-26 22:38:02,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59db138d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:38:02, skipping insertion in model container [2020-10-26 22:38:02,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:38:02" (3/3) ... [2020-10-26 22:38:02,499 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label19.c [2020-10-26 22:38:02,514 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:38:02,521 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:38:02,538 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:38:02,587 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:38:02,587 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:38:02,587 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:38:02,588 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:38:02,588 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:38:02,588 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:38:02,588 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:38:02,588 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:38:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:38:02,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-26 22:38:02,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:02,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:02,651 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:02,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:02,662 INFO L82 PathProgramCache]: Analyzing trace with hash 406430782, now seen corresponding path program 1 times [2020-10-26 22:38:02,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:02,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544539542] [2020-10-26 22:38:02,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:03,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:03,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:03,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:38:03,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:03,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-26 22:38:03,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:38:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 22:38:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:38:03,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:03,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:03,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:03,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:03,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 22:38:03,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:03,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:03,912 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 22:38:03,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544539542] [2020-10-26 22:38:03,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:38:03,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 22:38:03,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307172419] [2020-10-26 22:38:03,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:38:03,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:03,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:38:03,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:38:03,944 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-26 22:38:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:07,142 INFO L93 Difference]: Finished difference Result 798 states and 1400 transitions. [2020-10-26 22:38:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:38:07,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-26 22:38:07,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:07,180 INFO L225 Difference]: With dead ends: 798 [2020-10-26 22:38:07,180 INFO L226 Difference]: Without dead ends: 438 [2020-10-26 22:38:07,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:38:07,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-26 22:38:07,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 423. [2020-10-26 22:38:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-26 22:38:07,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 674 transitions. [2020-10-26 22:38:07,340 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 674 transitions. Word has length 63 [2020-10-26 22:38:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:07,341 INFO L481 AbstractCegarLoop]: Abstraction has 423 states and 674 transitions. [2020-10-26 22:38:07,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:38:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 674 transitions. [2020-10-26 22:38:07,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-26 22:38:07,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:07,359 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:38:07,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:38:07,359 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:07,361 INFO L82 PathProgramCache]: Analyzing trace with hash 189457817, now seen corresponding path program 1 times [2020-10-26 22:38:07,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:07,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723596961] [2020-10-26 22:38:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:07,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:07,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:08,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:09,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:09,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-26 22:38:09,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:38:09,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2106 [2020-10-26 22:38:09,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:38:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:38:09,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:38:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:09,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:09,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:09,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:09,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 22:38:09,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:09,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:09,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:09,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:09,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:38:09,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:09,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 22:38:09,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:38:09,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:38:10,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723596961] [2020-10-26 22:38:10,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:38:10,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 22:38:10,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515879758] [2020-10-26 22:38:10,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:38:10,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:10,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:38:10,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:38:10,135 INFO L87 Difference]: Start difference. First operand 423 states and 674 transitions. Second operand 8 states. [2020-10-26 22:38:14,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:14,788 INFO L93 Difference]: Finished difference Result 1271 states and 2066 transitions. [2020-10-26 22:38:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:38:14,790 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2020-10-26 22:38:14,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:14,798 INFO L225 Difference]: With dead ends: 1271 [2020-10-26 22:38:14,799 INFO L226 Difference]: Without dead ends: 854 [2020-10-26 22:38:14,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:38:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-10-26 22:38:14,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 821. [2020-10-26 22:38:14,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-10-26 22:38:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1223 transitions. [2020-10-26 22:38:14,868 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1223 transitions. Word has length 132 [2020-10-26 22:38:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:14,871 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1223 transitions. [2020-10-26 22:38:14,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:38:14,872 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1223 transitions. [2020-10-26 22:38:14,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-26 22:38:14,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:14,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 22:38:14,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:38:14,878 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:14,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:14,879 INFO L82 PathProgramCache]: Analyzing trace with hash -144123103, now seen corresponding path program 1 times [2020-10-26 22:38:14,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:14,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266145033] [2020-10-26 22:38:14,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:15,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:15,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:15,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:38:15,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:15,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-26 22:38:15,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:38:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:38:15,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:15,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:15,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:15,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:15,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:15,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:15,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:38:15,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:15,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:15,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:16,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:16,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:38:16,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:16,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-26 22:38:16,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:16,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:16,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:16,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:38:16,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:38:16,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266145033] [2020-10-26 22:38:16,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:38:16,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:38:16,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444098029] [2020-10-26 22:38:16,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:16,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:16,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:16,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:16,162 INFO L87 Difference]: Start difference. First operand 821 states and 1223 transitions. Second operand 7 states. [2020-10-26 22:38:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:19,771 INFO L93 Difference]: Finished difference Result 2247 states and 3432 transitions. [2020-10-26 22:38:19,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:38:19,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-26 22:38:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:19,784 INFO L225 Difference]: With dead ends: 2247 [2020-10-26 22:38:19,784 INFO L226 Difference]: Without dead ends: 1432 [2020-10-26 22:38:19,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:38:19,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-26 22:38:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1215. [2020-10-26 22:38:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-10-26 22:38:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1658 transitions. [2020-10-26 22:38:19,859 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1658 transitions. Word has length 136 [2020-10-26 22:38:19,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:19,862 INFO L481 AbstractCegarLoop]: Abstraction has 1215 states and 1658 transitions. [2020-10-26 22:38:19,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:38:19,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1658 transitions. [2020-10-26 22:38:19,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-26 22:38:19,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:19,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:19,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:38:19,866 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:19,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:19,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1295976040, now seen corresponding path program 1 times [2020-10-26 22:38:19,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:19,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252274266] [2020-10-26 22:38:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:19,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:20,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:21,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:22,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:22,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-26 22:38:22,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:38:22,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2271 [2020-10-26 22:38:22,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:38:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 22:38:22,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:38:22,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:22,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:22,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:22,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:22,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:22,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 22:38:22,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:22,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:22,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:22,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:22,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:22,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:22,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:22,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:22,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:22,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:38:22,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:38:22,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-26 22:38:22,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:22,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:22,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:38:22,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:38:22,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252274266] [2020-10-26 22:38:22,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:38:22,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:38:22,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880797100] [2020-10-26 22:38:22,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:22,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:22,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:22,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:22,965 INFO L87 Difference]: Start difference. First operand 1215 states and 1658 transitions. Second operand 7 states. [2020-10-26 22:38:26,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:26,418 INFO L93 Difference]: Finished difference Result 3057 states and 4551 transitions. [2020-10-26 22:38:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:38:26,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-26 22:38:26,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:26,432 INFO L225 Difference]: With dead ends: 3057 [2020-10-26 22:38:26,433 INFO L226 Difference]: Without dead ends: 2036 [2020-10-26 22:38:26,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 22:38:26,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2020-10-26 22:38:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 2002. [2020-10-26 22:38:26,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2002 states. [2020-10-26 22:38:26,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 2674 transitions. [2020-10-26 22:38:26,514 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 2674 transitions. Word has length 194 [2020-10-26 22:38:26,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:26,515 INFO L481 AbstractCegarLoop]: Abstraction has 2002 states and 2674 transitions. [2020-10-26 22:38:26,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:38:26,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 2674 transitions. [2020-10-26 22:38:26,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-26 22:38:26,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:26,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:26,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:38:26,520 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:26,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1409313151, now seen corresponding path program 1 times [2020-10-26 22:38:26,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:26,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888781395] [2020-10-26 22:38:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:26,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:26,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:27,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:27,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-26 22:38:27,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:38:27,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 989 [2020-10-26 22:38:27,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:38:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-26 22:38:27,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:27,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:27,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:27,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 22:38:27,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:38:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:27,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:28,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:28,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:38:28,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-26 22:38:28,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 22:38:28,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:38:28,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888781395] [2020-10-26 22:38:28,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:28,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:38:28,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229312137] [2020-10-26 22:38:28,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:38:28,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:28,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:38:28,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:38:28,271 INFO L87 Difference]: Start difference. First operand 2002 states and 2674 transitions. Second operand 6 states. [2020-10-26 22:38:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:31,086 INFO L93 Difference]: Finished difference Result 4654 states and 6344 transitions. [2020-10-26 22:38:31,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:38:31,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2020-10-26 22:38:31,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:31,111 INFO L225 Difference]: With dead ends: 4654 [2020-10-26 22:38:31,111 INFO L226 Difference]: Without dead ends: 2846 [2020-10-26 22:38:31,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:38:31,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2020-10-26 22:38:31,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2610. [2020-10-26 22:38:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2610 states. [2020-10-26 22:38:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3472 transitions. [2020-10-26 22:38:31,233 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3472 transitions. Word has length 210 [2020-10-26 22:38:31,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:31,234 INFO L481 AbstractCegarLoop]: Abstraction has 2610 states and 3472 transitions. [2020-10-26 22:38:31,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:38:31,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3472 transitions. [2020-10-26 22:38:31,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-26 22:38:31,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:31,241 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:38:31,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:38:31,241 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:31,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:31,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1726576466, now seen corresponding path program 1 times [2020-10-26 22:38:31,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:31,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094851235] [2020-10-26 22:38:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:31,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:33,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:33,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-26 22:38:33,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:38:33,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2241 [2020-10-26 22:38:33,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:33,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:33,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:38:33,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:38:33,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:33,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:33,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:33,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:33,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:33,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:38:33,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:33,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:33,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:33,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:33,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:33,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:38:33,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:33,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 22:38:33,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:33,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:38:33,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:33,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:38:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:33,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:34,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:34,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:38:34,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:34,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 22:38:34,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:38:34,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:38:34,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094851235] [2020-10-26 22:38:34,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:34,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:38:34,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415974387] [2020-10-26 22:38:34,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:34,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:34,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:34,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:34,172 INFO L87 Difference]: Start difference. First operand 2610 states and 3472 transitions. Second operand 7 states. [2020-10-26 22:38:37,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:37,720 INFO L93 Difference]: Finished difference Result 5262 states and 7031 transitions. [2020-10-26 22:38:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:38:37,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-26 22:38:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:37,737 INFO L225 Difference]: With dead ends: 5262 [2020-10-26 22:38:37,738 INFO L226 Difference]: Without dead ends: 2846 [2020-10-26 22:38:37,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 22:38:37,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2020-10-26 22:38:37,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2828. [2020-10-26 22:38:37,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2828 states. [2020-10-26 22:38:37,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3577 transitions. [2020-10-26 22:38:37,857 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3577 transitions. Word has length 251 [2020-10-26 22:38:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:37,858 INFO L481 AbstractCegarLoop]: Abstraction has 2828 states and 3577 transitions. [2020-10-26 22:38:37,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:38:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3577 transitions. [2020-10-26 22:38:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-26 22:38:37,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:37,864 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:38:37,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:38:37,865 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:37,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:37,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1356090230, now seen corresponding path program 1 times [2020-10-26 22:38:37,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:37,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960585716] [2020-10-26 22:38:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:37,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:39,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:40,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:40,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-26 22:38:40,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:38:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2153 [2020-10-26 22:38:40,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:38:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-26 22:38:40,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:40,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:40,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:40,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:40,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:40,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:40,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 22:38:40,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:40,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:38:40,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:40,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:40,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:38:40,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:38:40,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-26 22:38:40,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:38:40,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:40,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:38:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:41,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:41,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:38:41,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:41,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 22:38:41,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:38:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:38:41,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-26 22:38:41,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960585716] [2020-10-26 22:38:41,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:41,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:38:41,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59987480] [2020-10-26 22:38:41,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:38:41,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:41,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:38:41,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:38:41,521 INFO L87 Difference]: Start difference. First operand 2828 states and 3577 transitions. Second operand 8 states. [2020-10-26 22:38:45,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:45,907 INFO L93 Difference]: Finished difference Result 6456 states and 8251 transitions. [2020-10-26 22:38:45,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:38:45,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2020-10-26 22:38:45,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:45,929 INFO L225 Difference]: With dead ends: 6456 [2020-10-26 22:38:45,929 INFO L226 Difference]: Without dead ends: 3822 [2020-10-26 22:38:45,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-26 22:38:45,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2020-10-26 22:38:46,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3610. [2020-10-26 22:38:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3610 states. [2020-10-26 22:38:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 4451 transitions. [2020-10-26 22:38:46,061 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 4451 transitions. Word has length 252 [2020-10-26 22:38:46,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:46,062 INFO L481 AbstractCegarLoop]: Abstraction has 3610 states and 4451 transitions. [2020-10-26 22:38:46,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:38:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 4451 transitions. [2020-10-26 22:38:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-26 22:38:46,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:46,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:46,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:38:46,069 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:46,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:46,070 INFO L82 PathProgramCache]: Analyzing trace with hash 866956845, now seen corresponding path program 1 times [2020-10-26 22:38:46,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:46,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735905886] [2020-10-26 22:38:46,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:46,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:48,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:48,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-26 22:38:48,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:38:48,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2226 [2020-10-26 22:38:48,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:38:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:38:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:48,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:48,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:48,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:48,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:48,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:48,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:38:48,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:48,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:48,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:48,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:48,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:48,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:48,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:48,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:38:48,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:48,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 22:38:48,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:38:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:48,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:38:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:48,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:48,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:48,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:38:48,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 22:38:48,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:38:48,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:38:49,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735905886] [2020-10-26 22:38:49,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:49,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:38:49,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198081800] [2020-10-26 22:38:49,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:49,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:49,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:49,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:49,090 INFO L87 Difference]: Start difference. First operand 3610 states and 4451 transitions. Second operand 7 states. [2020-10-26 22:38:53,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:53,755 INFO L93 Difference]: Finished difference Result 9408 states and 12049 transitions. [2020-10-26 22:38:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:38:53,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-26 22:38:53,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:53,786 INFO L225 Difference]: With dead ends: 9408 [2020-10-26 22:38:53,786 INFO L226 Difference]: Without dead ends: 5992 [2020-10-26 22:38:53,796 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 22:38:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5992 states. [2020-10-26 22:38:53,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5992 to 5592. [2020-10-26 22:38:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5592 states. [2020-10-26 22:38:53,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 6921 transitions. [2020-10-26 22:38:53,969 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 6921 transitions. Word has length 263 [2020-10-26 22:38:53,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:53,969 INFO L481 AbstractCegarLoop]: Abstraction has 5592 states and 6921 transitions. [2020-10-26 22:38:53,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:38:53,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 6921 transitions. [2020-10-26 22:38:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-26 22:38:53,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:53,985 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:53,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:38:53,985 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:53,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:53,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1178945301, now seen corresponding path program 1 times [2020-10-26 22:38:53,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:53,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409377511] [2020-10-26 22:38:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:56,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:56,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-26 22:38:56,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:38:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2075 [2020-10-26 22:38:56,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:56,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:56,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:38:56,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 22:38:56,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:56,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:56,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:56,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:56,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:56,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 22:38:56,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:56,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:56,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:56,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:56,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:56,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:38:56,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 22:38:56,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:38:56,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:56,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:38:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:56,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:56,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:56,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:38:56,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 22:38:56,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:38:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:56,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-26 22:38:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:56,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:56,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:56,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:38:56,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 22:38:56,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 22:38:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:56,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 252 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-26 22:38:57,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409377511] [2020-10-26 22:38:57,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:57,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:38:57,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729613902] [2020-10-26 22:38:57,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:57,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:57,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:57,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:57,115 INFO L87 Difference]: Start difference. First operand 5592 states and 6921 transitions. Second operand 7 states. [2020-10-26 22:39:00,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:00,840 INFO L93 Difference]: Finished difference Result 13315 states and 18154 transitions. [2020-10-26 22:39:00,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:39:00,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 338 [2020-10-26 22:39:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:00,895 INFO L225 Difference]: With dead ends: 13315 [2020-10-26 22:39:00,895 INFO L226 Difference]: Without dead ends: 7917 [2020-10-26 22:39:00,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:39:00,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7917 states. [2020-10-26 22:39:01,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7917 to 7533. [2020-10-26 22:39:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7533 states. [2020-10-26 22:39:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7533 states to 7533 states and 9479 transitions. [2020-10-26 22:39:01,202 INFO L78 Accepts]: Start accepts. Automaton has 7533 states and 9479 transitions. Word has length 338 [2020-10-26 22:39:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:01,203 INFO L481 AbstractCegarLoop]: Abstraction has 7533 states and 9479 transitions. [2020-10-26 22:39:01,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 7533 states and 9479 transitions. [2020-10-26 22:39:01,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-26 22:39:01,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:01,223 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:01,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:39:01,223 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:01,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:01,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1970342849, now seen corresponding path program 1 times [2020-10-26 22:39:01,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:01,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855789950] [2020-10-26 22:39:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:02,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:02,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-26 22:39:02,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-26 22:39:02,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-26 22:39:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:39:02,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:02,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:02,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:02,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:02,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:39:02,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:02,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:02,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:02,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:02,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:39:02,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:02,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 22:39:02,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:02,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:02,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:02,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:02,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:02,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:39:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:02,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:02,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:39:02,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:02,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 22:39:02,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:39:02,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:02,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:39:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:02,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:02,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:39:02,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:02,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 22:39:02,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:02,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:02,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:39:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 22:39:02,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855789950] [2020-10-26 22:39:02,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:02,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:02,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708656798] [2020-10-26 22:39:02,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:02,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:02,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:02,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:02,820 INFO L87 Difference]: Start difference. First operand 7533 states and 9479 transitions. Second operand 7 states. [2020-10-26 22:39:06,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:06,446 INFO L93 Difference]: Finished difference Result 15868 states and 20273 transitions. [2020-10-26 22:39:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:39:06,448 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 348 [2020-10-26 22:39:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:06,477 INFO L225 Difference]: With dead ends: 15868 [2020-10-26 22:39:06,477 INFO L226 Difference]: Without dead ends: 8529 [2020-10-26 22:39:06,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:39:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8529 states. [2020-10-26 22:39:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8529 to 8521. [2020-10-26 22:39:06,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8521 states. [2020-10-26 22:39:06,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8521 states to 8521 states and 10717 transitions. [2020-10-26 22:39:06,768 INFO L78 Accepts]: Start accepts. Automaton has 8521 states and 10717 transitions. Word has length 348 [2020-10-26 22:39:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:06,769 INFO L481 AbstractCegarLoop]: Abstraction has 8521 states and 10717 transitions. [2020-10-26 22:39:06,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 8521 states and 10717 transitions. [2020-10-26 22:39:06,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-26 22:39:06,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:06,788 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:39:06,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:39:06,789 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:06,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:06,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1699303817, now seen corresponding path program 1 times [2020-10-26 22:39:06,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:06,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945046368] [2020-10-26 22:39:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:07,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:07,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:07,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:07,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:07,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-26 22:39:07,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:39:07,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-26 22:39:07,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-26 22:39:07,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:07,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:07,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:07,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:07,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:07,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:07,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:39:07,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:07,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:07,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:07,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:07,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:07,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:07,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:07,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:39:07,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:07,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 22:39:07,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 22:39:07,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:07,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:39:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:08,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:08,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:08,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:08,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 22:39:08,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-26 22:39:08,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-26 22:39:08,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:08,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:08,392 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-26 22:39:08,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945046368] [2020-10-26 22:39:08,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:39:08,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 22:39:08,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103264074] [2020-10-26 22:39:08,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:39:08,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:08,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:39:08,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:39:08,395 INFO L87 Difference]: Start difference. First operand 8521 states and 10717 transitions. Second operand 5 states. [2020-10-26 22:39:10,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:10,264 INFO L93 Difference]: Finished difference Result 16835 states and 21233 transitions. [2020-10-26 22:39:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:39:10,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 353 [2020-10-26 22:39:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:10,291 INFO L225 Difference]: With dead ends: 16835 [2020-10-26 22:39:10,292 INFO L226 Difference]: Without dead ends: 8508 [2020-10-26 22:39:10,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:39:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8508 states. [2020-10-26 22:39:10,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8508 to 8505. [2020-10-26 22:39:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8505 states. [2020-10-26 22:39:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8505 states to 8505 states and 10673 transitions. [2020-10-26 22:39:10,508 INFO L78 Accepts]: Start accepts. Automaton has 8505 states and 10673 transitions. Word has length 353 [2020-10-26 22:39:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:10,508 INFO L481 AbstractCegarLoop]: Abstraction has 8505 states and 10673 transitions. [2020-10-26 22:39:10,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:39:10,509 INFO L276 IsEmpty]: Start isEmpty. Operand 8505 states and 10673 transitions. [2020-10-26 22:39:10,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-26 22:39:10,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:10,527 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:10,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:39:10,528 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:10,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:10,530 INFO L82 PathProgramCache]: Analyzing trace with hash 793134118, now seen corresponding path program 1 times [2020-10-26 22:39:10,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:10,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567198335] [2020-10-26 22:39:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:10,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:10,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:13,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:13,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-26 22:39:13,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:39:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2348 [2020-10-26 22:39:13,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:13,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:13,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-26 22:39:13,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-26 22:39:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:13,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:13,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:13,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:13,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:13,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:39:13,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:13,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:13,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:13,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:13,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:13,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:39:13,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:13,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 22:39:13,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:13,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:39:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:13,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:13,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:13,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:39:13,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 22:39:13,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:39:13,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:13,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:39:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:13,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:13,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:13,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-26 22:39:13,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 22:39:13,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-26 22:39:13,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 22:39:13,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567198335] [2020-10-26 22:39:13,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:13,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:13,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691399778] [2020-10-26 22:39:13,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:13,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:13,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:13,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:13,763 INFO L87 Difference]: Start difference. First operand 8505 states and 10673 transitions. Second operand 7 states. [2020-10-26 22:39:17,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:17,472 INFO L93 Difference]: Finished difference Result 18187 states and 23105 transitions. [2020-10-26 22:39:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:39:17,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 377 [2020-10-26 22:39:17,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:17,506 INFO L225 Difference]: With dead ends: 18187 [2020-10-26 22:39:17,506 INFO L226 Difference]: Without dead ends: 9876 [2020-10-26 22:39:17,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 22:39:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9876 states. [2020-10-26 22:39:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9876 to 9864. [2020-10-26 22:39:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9864 states. [2020-10-26 22:39:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9864 states to 9864 states and 12384 transitions. [2020-10-26 22:39:17,865 INFO L78 Accepts]: Start accepts. Automaton has 9864 states and 12384 transitions. Word has length 377 [2020-10-26 22:39:17,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:17,866 INFO L481 AbstractCegarLoop]: Abstraction has 9864 states and 12384 transitions. [2020-10-26 22:39:17,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:17,867 INFO L276 IsEmpty]: Start isEmpty. Operand 9864 states and 12384 transitions. [2020-10-26 22:39:17,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-26 22:39:17,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:17,891 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:17,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:39:17,891 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:17,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:17,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1015345873, now seen corresponding path program 1 times [2020-10-26 22:39:17,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:17,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758930167] [2020-10-26 22:39:17,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:18,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:18,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:18,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:18,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:23,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:23,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-26 22:39:23,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:39:23,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-26 22:39:23,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:23,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:39:23,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:39:23,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-26 22:39:23,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:23,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:23,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:23,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:23,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:23,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:39:23,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:23,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:23,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:23,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:23,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:39:23,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 22:39:23,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:39:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:39:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:23,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:23,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:23,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 22:39:23,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 22:39:23,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 22:39:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:23,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-26 22:39:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:23,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:23,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:23,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-26 22:39:23,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:23,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 22:39:23,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-26 22:39:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 309 proven. 109 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 22:39:24,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758930167] [2020-10-26 22:39:24,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:24,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:39:24,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122933067] [2020-10-26 22:39:24,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:39:24,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:24,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:39:24,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:39:24,014 INFO L87 Difference]: Start difference. First operand 9864 states and 12384 transitions. Second operand 8 states. [2020-10-26 22:39:27,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:27,144 INFO L93 Difference]: Finished difference Result 19630 states and 25124 transitions. [2020-10-26 22:39:27,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:39:27,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 379 [2020-10-26 22:39:27,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:27,178 INFO L225 Difference]: With dead ends: 19630 [2020-10-26 22:39:27,179 INFO L226 Difference]: Without dead ends: 9960 [2020-10-26 22:39:27,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:39:27,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9960 states. [2020-10-26 22:39:27,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9960 to 9864. [2020-10-26 22:39:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9864 states. [2020-10-26 22:39:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9864 states to 9864 states and 11981 transitions. [2020-10-26 22:39:27,436 INFO L78 Accepts]: Start accepts. Automaton has 9864 states and 11981 transitions. Word has length 379 [2020-10-26 22:39:27,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:27,436 INFO L481 AbstractCegarLoop]: Abstraction has 9864 states and 11981 transitions. [2020-10-26 22:39:27,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:39:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 9864 states and 11981 transitions. [2020-10-26 22:39:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-26 22:39:27,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:27,453 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2020-10-26 22:39:27,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:39:27,453 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:27,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:27,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1677363591, now seen corresponding path program 1 times [2020-10-26 22:39:27,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:27,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085901390] [2020-10-26 22:39:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:27,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:28,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:28,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-26 22:39:28,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:28,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-26 22:39:28,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:28,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:39:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:39:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:28,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:28,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:28,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:28,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:28,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:28,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:39:28,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:28,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:28,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:28,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:28,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:28,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:28,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:28,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:28,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:39:28,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:28,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 22:39:28,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:28,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:28,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:39:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:28,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:28,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:39:28,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 22:39:28,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:39:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:28,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:39:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:28,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:28,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:28,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:39:28,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:28,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 22:39:28,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:28,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:28,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:39:28,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 22:39:28,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085901390] [2020-10-26 22:39:28,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:28,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:28,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386411133] [2020-10-26 22:39:28,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:28,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:28,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:28,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:28,887 INFO L87 Difference]: Start difference. First operand 9864 states and 11981 transitions. Second operand 7 states. [2020-10-26 22:39:32,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:32,371 INFO L93 Difference]: Finished difference Result 20744 states and 25205 transitions. [2020-10-26 22:39:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:39:32,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-26 22:39:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:32,396 INFO L225 Difference]: With dead ends: 20744 [2020-10-26 22:39:32,397 INFO L226 Difference]: Without dead ends: 11074 [2020-10-26 22:39:32,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:39:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11074 states. [2020-10-26 22:39:32,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11074 to 11030. [2020-10-26 22:39:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11030 states. [2020-10-26 22:39:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11030 states to 11030 states and 13208 transitions. [2020-10-26 22:39:32,642 INFO L78 Accepts]: Start accepts. Automaton has 11030 states and 13208 transitions. Word has length 383 [2020-10-26 22:39:32,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:32,642 INFO L481 AbstractCegarLoop]: Abstraction has 11030 states and 13208 transitions. [2020-10-26 22:39:32,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 11030 states and 13208 transitions. [2020-10-26 22:39:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-26 22:39:32,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:32,663 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:32,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:39:32,663 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:32,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:32,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1628740655, now seen corresponding path program 1 times [2020-10-26 22:39:32,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:32,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104915445] [2020-10-26 22:39:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:32,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:32,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:33,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:37,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:37,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-26 22:39:37,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:39:37,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-26 22:39:37,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:39:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-26 22:39:37,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:37,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:37,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:37,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:37,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:37,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:39:37,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:38,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:38,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:38,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:39:38,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 22:39:38,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:39:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:38,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:39:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:38,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:38,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:38,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:39:38,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:38,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 22:39:38,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:39:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:39:38,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:39:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:38,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:38,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:38,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:39:38,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 22:39:38,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-26 22:39:38,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 253 proven. 85 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-26 22:39:38,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104915445] [2020-10-26 22:39:38,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:38,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 22:39:38,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613538597] [2020-10-26 22:39:38,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 22:39:38,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:38,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 22:39:38,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:39:38,634 INFO L87 Difference]: Start difference. First operand 11030 states and 13208 transitions. Second operand 10 states. [2020-10-26 22:39:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:45,899 INFO L93 Difference]: Finished difference Result 32478 states and 39861 transitions. [2020-10-26 22:39:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 22:39:45,900 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 396 [2020-10-26 22:39:45,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:45,956 INFO L225 Difference]: With dead ends: 32478 [2020-10-26 22:39:45,956 INFO L226 Difference]: Without dead ends: 21052 [2020-10-26 22:39:45,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-26 22:39:46,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21052 states. [2020-10-26 22:39:46,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21052 to 20126. [2020-10-26 22:39:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20126 states. [2020-10-26 22:39:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20126 states to 20126 states and 23958 transitions. [2020-10-26 22:39:46,551 INFO L78 Accepts]: Start accepts. Automaton has 20126 states and 23958 transitions. Word has length 396 [2020-10-26 22:39:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:46,551 INFO L481 AbstractCegarLoop]: Abstraction has 20126 states and 23958 transitions. [2020-10-26 22:39:46,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 22:39:46,552 INFO L276 IsEmpty]: Start isEmpty. Operand 20126 states and 23958 transitions. [2020-10-26 22:39:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-26 22:39:46,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:46,577 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:46,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:39:46,577 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:46,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:46,578 INFO L82 PathProgramCache]: Analyzing trace with hash -906687244, now seen corresponding path program 1 times [2020-10-26 22:39:46,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:46,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731816365] [2020-10-26 22:39:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:46,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:46,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:47,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:48,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:50,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:50,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-26 22:39:50,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:39:50,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3567 [2020-10-26 22:39:50,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:50,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:50,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:39:50,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:39:50,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:50,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:50,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:50,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:50,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:50,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:39:50,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:50,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:50,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:50,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:50,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:39:50,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:50,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 22:39:50,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:50,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:50,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:50,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:39:50,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:50,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:39:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:50,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:50,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:39:50,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 22:39:50,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 22:39:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:50,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-26 22:39:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:50,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:50,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:39:50,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:50,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 22:39:50,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:50,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:50,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-26 22:39:50,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:50,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 273 proven. 106 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-26 22:39:50,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731816365] [2020-10-26 22:39:50,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:50,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:50,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178083250] [2020-10-26 22:39:50,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:50,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:50,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:50,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:50,912 INFO L87 Difference]: Start difference. First operand 20126 states and 23958 transitions. Second operand 7 states. [2020-10-26 22:39:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:54,612 INFO L93 Difference]: Finished difference Result 45419 states and 54352 transitions. [2020-10-26 22:39:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:39:54,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422 [2020-10-26 22:39:54,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:54,684 INFO L225 Difference]: With dead ends: 45419 [2020-10-26 22:39:54,684 INFO L226 Difference]: Without dead ends: 25677 [2020-10-26 22:39:54,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:39:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25677 states. [2020-10-26 22:39:55,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25677 to 25422. [2020-10-26 22:39:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25422 states. [2020-10-26 22:39:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25422 states to 25422 states and 30108 transitions. [2020-10-26 22:39:55,288 INFO L78 Accepts]: Start accepts. Automaton has 25422 states and 30108 transitions. Word has length 422 [2020-10-26 22:39:55,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:55,288 INFO L481 AbstractCegarLoop]: Abstraction has 25422 states and 30108 transitions. [2020-10-26 22:39:55,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:55,289 INFO L276 IsEmpty]: Start isEmpty. Operand 25422 states and 30108 transitions. [2020-10-26 22:39:55,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-26 22:39:55,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:55,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:55,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:39:55,312 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:55,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:55,313 INFO L82 PathProgramCache]: Analyzing trace with hash -889184641, now seen corresponding path program 1 times [2020-10-26 22:39:55,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:55,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804749593] [2020-10-26 22:39:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:55,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:55,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:56,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:56,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-26 22:39:56,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-10-26 22:39:56,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 378 [2020-10-26 22:39:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-26 22:39:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:56,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:56,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:56,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:56,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:56,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:39:56,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:56,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:56,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:56,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:39:56,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:39:56,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:56,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:39:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:56,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:56,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:56,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:39:56,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 22:39:56,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:56,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:56,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:39:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:56,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:56,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:56,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-26 22:39:56,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:56,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 22:39:56,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 22:39:56,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-26 22:39:57,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804749593] [2020-10-26 22:39:57,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:57,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:39:57,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886089069] [2020-10-26 22:39:57,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:39:57,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:57,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:39:57,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:39:57,072 INFO L87 Difference]: Start difference. First operand 25422 states and 30108 transitions. Second operand 5 states. [2020-10-26 22:40:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:00,069 INFO L93 Difference]: Finished difference Result 29801 states and 35266 transitions. [2020-10-26 22:40:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:40:00,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 427 [2020-10-26 22:40:00,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:00,152 INFO L225 Difference]: With dead ends: 29801 [2020-10-26 22:40:00,152 INFO L226 Difference]: Without dead ends: 29798 [2020-10-26 22:40:00,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:40:00,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29798 states. [2020-10-26 22:40:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29798 to 28246. [2020-10-26 22:40:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28246 states. [2020-10-26 22:40:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28246 states to 28246 states and 33521 transitions. [2020-10-26 22:40:00,766 INFO L78 Accepts]: Start accepts. Automaton has 28246 states and 33521 transitions. Word has length 427 [2020-10-26 22:40:00,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:00,767 INFO L481 AbstractCegarLoop]: Abstraction has 28246 states and 33521 transitions. [2020-10-26 22:40:00,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:40:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 28246 states and 33521 transitions. [2020-10-26 22:40:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-26 22:40:00,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:00,795 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:00,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:40:00,795 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:00,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:00,796 INFO L82 PathProgramCache]: Analyzing trace with hash -558485757, now seen corresponding path program 1 times [2020-10-26 22:40:00,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:00,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596802725] [2020-10-26 22:40:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:03,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:03,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-26 22:40:03,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:40:03,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2835 [2020-10-26 22:40:03,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:40:03,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-26 22:40:03,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:03,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:03,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:03,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:03,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:03,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:40:03,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:03,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:03,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:03,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:03,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:03,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:03,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:03,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:40:03,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 22:40:03,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:03,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:40:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:03,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:04,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:04,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:04,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:04,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 22:40:04,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:04,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:04,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:04,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:40:04,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:04,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:40:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:04,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:04,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 22:40:04,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:04,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 22:40:04,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 22:40:04,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 22:40:04,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596802725] [2020-10-26 22:40:04,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:04,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:04,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525918168] [2020-10-26 22:40:04,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:04,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:04,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:04,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:04,620 INFO L87 Difference]: Start difference. First operand 28246 states and 33521 transitions. Second operand 7 states. [2020-10-26 22:40:08,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:08,784 INFO L93 Difference]: Finished difference Result 54615 states and 65106 transitions. [2020-10-26 22:40:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:40:08,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 463 [2020-10-26 22:40:08,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:08,840 INFO L225 Difference]: With dead ends: 54615 [2020-10-26 22:40:08,841 INFO L226 Difference]: Without dead ends: 30041 [2020-10-26 22:40:08,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:40:08,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30041 states. [2020-10-26 22:40:09,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30041 to 29970. [2020-10-26 22:40:09,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29970 states. [2020-10-26 22:40:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29970 states to 29970 states and 35473 transitions. [2020-10-26 22:40:09,421 INFO L78 Accepts]: Start accepts. Automaton has 29970 states and 35473 transitions. Word has length 463 [2020-10-26 22:40:09,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:09,422 INFO L481 AbstractCegarLoop]: Abstraction has 29970 states and 35473 transitions. [2020-10-26 22:40:09,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:09,422 INFO L276 IsEmpty]: Start isEmpty. Operand 29970 states and 35473 transitions. [2020-10-26 22:40:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-26 22:40:09,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:09,445 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:09,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:40:09,446 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:09,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:09,446 INFO L82 PathProgramCache]: Analyzing trace with hash -799178322, now seen corresponding path program 1 times [2020-10-26 22:40:09,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:09,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295299017] [2020-10-26 22:40:09,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:09,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:09,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:12,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:12,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-26 22:40:12,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:40:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2879 [2020-10-26 22:40:12,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 22:40:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:40:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 22:40:12,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:12,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:12,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:12,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:12,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:40:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:12,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:12,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:12,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:12,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:40:12,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:12,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 22:40:12,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:12,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:12,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:12,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:12,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:12,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:40:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:12,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:12,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:12,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:12,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 22:40:12,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:12,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:12,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:12,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:40:12,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:12,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:40:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:13,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:13,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 22:40:13,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:13,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 22:40:13,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 22:40:13,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:13,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-26 22:40:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:13,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:13,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:13,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:40:13,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:13,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 22:40:13,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:13,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:40:13,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:13,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:40:13,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 513 proven. 90 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-26 22:40:13,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295299017] [2020-10-26 22:40:13,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:13,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 22:40:13,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236361937] [2020-10-26 22:40:13,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:40:13,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:13,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:40:13,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:40:13,487 INFO L87 Difference]: Start difference. First operand 29970 states and 35473 transitions. Second operand 9 states. [2020-10-26 22:40:15,605 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:40:20,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:20,994 INFO L93 Difference]: Finished difference Result 63013 states and 76519 transitions. [2020-10-26 22:40:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:40:20,996 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 468 [2020-10-26 22:40:20,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:21,083 INFO L225 Difference]: With dead ends: 63013 [2020-10-26 22:40:21,083 INFO L226 Difference]: Without dead ends: 36671 [2020-10-26 22:40:21,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-26 22:40:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36671 states. [2020-10-26 22:40:21,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36671 to 35920. [2020-10-26 22:40:21,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35920 states. [2020-10-26 22:40:21,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35920 states to 35920 states and 42233 transitions. [2020-10-26 22:40:21,967 INFO L78 Accepts]: Start accepts. Automaton has 35920 states and 42233 transitions. Word has length 468 [2020-10-26 22:40:21,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:21,968 INFO L481 AbstractCegarLoop]: Abstraction has 35920 states and 42233 transitions. [2020-10-26 22:40:21,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:40:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 35920 states and 42233 transitions. [2020-10-26 22:40:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-26 22:40:21,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:21,994 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:21,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:40:21,994 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:21,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:21,995 INFO L82 PathProgramCache]: Analyzing trace with hash 95489608, now seen corresponding path program 1 times [2020-10-26 22:40:21,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:21,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580152046] [2020-10-26 22:40:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:23,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-26 22:40:24,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:40:24,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2501 [2020-10-26 22:40:24,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:24,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:40:24,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-26 22:40:24,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:24,800 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 22:40:24,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:24,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:24,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:40:24,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:24,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:24,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:24,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:40:24,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:24,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 22:40:24,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:25,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:40:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:25,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:25,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:25,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:40:25,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:25,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-26 22:40:25,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 22:40:25,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:25,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:40:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:25,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:25,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:25,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 22:40:25,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:25,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-26 22:40:25,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:25,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 22:40:25,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 431 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-26 22:40:26,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580152046] [2020-10-26 22:40:26,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:26,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:26,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050675012] [2020-10-26 22:40:26,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:26,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:26,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:26,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:26,038 INFO L87 Difference]: Start difference. First operand 35920 states and 42233 transitions. Second operand 7 states. [2020-10-26 22:40:31,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:31,613 INFO L93 Difference]: Finished difference Result 69202 states and 81379 transitions. [2020-10-26 22:40:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:40:31,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 485 [2020-10-26 22:40:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:31,691 INFO L225 Difference]: With dead ends: 69202 [2020-10-26 22:40:31,691 INFO L226 Difference]: Without dead ends: 37522 [2020-10-26 22:40:31,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:31,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37522 states. [2020-10-26 22:40:32,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37522 to 37050. [2020-10-26 22:40:32,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37050 states. [2020-10-26 22:40:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37050 states to 37050 states and 43350 transitions. [2020-10-26 22:40:32,525 INFO L78 Accepts]: Start accepts. Automaton has 37050 states and 43350 transitions. Word has length 485 [2020-10-26 22:40:32,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:32,525 INFO L481 AbstractCegarLoop]: Abstraction has 37050 states and 43350 transitions. [2020-10-26 22:40:32,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 37050 states and 43350 transitions. [2020-10-26 22:40:32,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-26 22:40:32,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:32,557 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:32,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:40:32,557 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:32,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:32,558 INFO L82 PathProgramCache]: Analyzing trace with hash 286463915, now seen corresponding path program 1 times [2020-10-26 22:40:32,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:32,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110737130] [2020-10-26 22:40:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:32,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:34,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:37,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:37,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-26 22:40:37,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:40:37,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4354 [2020-10-26 22:40:37,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:40:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 22:40:37,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:37,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:37,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:37,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:37,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:37,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:37,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:40:37,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:37,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:37,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:37,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:37,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:37,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:37,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:37,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:37,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:40:37,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:37,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 22:40:37,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:37,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:37,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:37,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:40:37,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:40:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:37,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:37,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:40:37,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:37,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 22:40:37,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:37,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:37,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:37,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:40:37,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:37,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 22:40:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:37,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:37,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:37,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:40:37,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:37,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 22:40:37,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:37,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:37,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 22:40:37,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:37,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:37,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-26 22:40:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:37,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:37,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:37,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:40:37,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:37,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 22:40:37,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:37,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:37,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-26 22:40:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 335 proven. 192 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-10-26 22:40:38,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110737130] [2020-10-26 22:40:38,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:38,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:38,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761744214] [2020-10-26 22:40:38,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:38,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:38,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:38,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:38,230 INFO L87 Difference]: Start difference. First operand 37050 states and 43350 transitions. Second operand 7 states. [2020-10-26 22:40:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:42,626 INFO L93 Difference]: Finished difference Result 69973 states and 81984 transitions. [2020-10-26 22:40:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:40:42,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 496 [2020-10-26 22:40:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:42,705 INFO L225 Difference]: With dead ends: 69973 [2020-10-26 22:40:42,705 INFO L226 Difference]: Without dead ends: 37541 [2020-10-26 22:40:42,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:40:42,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37541 states. [2020-10-26 22:40:43,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37541 to 36862. [2020-10-26 22:40:43,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36862 states. [2020-10-26 22:40:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36862 states to 36862 states and 43064 transitions. [2020-10-26 22:40:43,422 INFO L78 Accepts]: Start accepts. Automaton has 36862 states and 43064 transitions. Word has length 496 [2020-10-26 22:40:43,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:43,423 INFO L481 AbstractCegarLoop]: Abstraction has 36862 states and 43064 transitions. [2020-10-26 22:40:43,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 36862 states and 43064 transitions. [2020-10-26 22:40:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-26 22:40:43,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:43,458 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:43,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:40:43,459 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:43,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:43,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1458591913, now seen corresponding path program 1 times [2020-10-26 22:40:43,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:43,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783493173] [2020-10-26 22:40:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:43,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:45,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-26 22:40:48,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:40:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-26 22:40:48,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:40:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 22:40:48,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:48,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:48,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:48,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:40:48,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:48,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:48,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:48,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:40:48,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:48,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 22:40:48,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:40:48,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:40:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:49,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:49,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:40:49,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:49,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-26 22:40:49,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:40:49,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:49,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-26 22:40:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:49,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:49,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:49,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:40:49,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 22:40:49,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 22:40:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:49,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-26 22:40:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:49,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:49,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:40:49,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:49,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 22:40:49,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:49,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-26 22:40:49,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:49,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 335 proven. 192 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-26 22:40:49,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783493173] [2020-10-26 22:40:49,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:49,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:49,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113375630] [2020-10-26 22:40:49,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:49,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:49,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:49,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:49,534 INFO L87 Difference]: Start difference. First operand 36862 states and 43064 transitions. Second operand 7 states. [2020-10-26 22:40:54,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:54,051 INFO L93 Difference]: Finished difference Result 77404 states and 90507 transitions. [2020-10-26 22:40:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:40:54,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 506 [2020-10-26 22:40:54,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:54,124 INFO L225 Difference]: With dead ends: 77404 [2020-10-26 22:40:54,124 INFO L226 Difference]: Without dead ends: 40546 [2020-10-26 22:40:54,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:54,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40546 states. [2020-10-26 22:40:54,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40546 to 37444. [2020-10-26 22:40:54,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37444 states. [2020-10-26 22:40:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37444 states to 37444 states and 43199 transitions. [2020-10-26 22:40:54,953 INFO L78 Accepts]: Start accepts. Automaton has 37444 states and 43199 transitions. Word has length 506 [2020-10-26 22:40:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:54,953 INFO L481 AbstractCegarLoop]: Abstraction has 37444 states and 43199 transitions. [2020-10-26 22:40:54,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand 37444 states and 43199 transitions. [2020-10-26 22:40:54,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2020-10-26 22:40:54,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:54,981 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:54,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:40:54,981 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:54,987 INFO L82 PathProgramCache]: Analyzing trace with hash 2045641269, now seen corresponding path program 1 times [2020-10-26 22:40:54,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:54,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389682296] [2020-10-26 22:40:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:55,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:56,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:57,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:00,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:00,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-26 22:41:00,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:41:00,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 22:41:00,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:41:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 22:41:00,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:00,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:00,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:00,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:00,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:00,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:41:00,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:00,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:00,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:00,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:00,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:41:00,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:00,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 22:41:00,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:00,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:00,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:00,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:41:00,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:00,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:41:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:00,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:00,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:00,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:41:00,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 22:41:00,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:41:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:00,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-26 22:41:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:00,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:00,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:00,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:41:00,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 22:41:00,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 22:41:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:00,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:00,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-26 22:41:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:00,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:00,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:00,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:41:00,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:00,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 22:41:00,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:00,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:00,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-26 22:41:00,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:00,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 335 proven. 192 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-26 22:41:01,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389682296] [2020-10-26 22:41:01,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:01,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:01,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110098013] [2020-10-26 22:41:01,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:01,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:01,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:01,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:01,009 INFO L87 Difference]: Start difference. First operand 37444 states and 43199 transitions. Second operand 7 states. [2020-10-26 22:41:05,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:05,505 INFO L93 Difference]: Finished difference Result 71727 states and 82682 transitions. [2020-10-26 22:41:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:41:05,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 527 [2020-10-26 22:41:05,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:05,581 INFO L225 Difference]: With dead ends: 71727 [2020-10-26 22:41:05,582 INFO L226 Difference]: Without dead ends: 39281 [2020-10-26 22:41:05,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:41:05,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39281 states. [2020-10-26 22:41:06,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39281 to 38596. [2020-10-26 22:41:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38596 states. [2020-10-26 22:41:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38596 states to 38596 states and 44294 transitions. [2020-10-26 22:41:06,335 INFO L78 Accepts]: Start accepts. Automaton has 38596 states and 44294 transitions. Word has length 527 [2020-10-26 22:41:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:06,335 INFO L481 AbstractCegarLoop]: Abstraction has 38596 states and 44294 transitions. [2020-10-26 22:41:06,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:06,335 INFO L276 IsEmpty]: Start isEmpty. Operand 38596 states and 44294 transitions. [2020-10-26 22:41:06,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2020-10-26 22:41:06,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:06,359 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:41:06,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:41:06,359 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:06,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:06,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1732957191, now seen corresponding path program 1 times [2020-10-26 22:41:06,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:06,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005855162] [2020-10-26 22:41:06,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:06,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:07,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:08,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:08,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 582 [2020-10-26 22:41:08,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2258 [2020-10-26 22:41:08,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 22:41:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 442 [2020-10-26 22:41:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 22:41:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:08,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:08,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:08,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:08,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:08,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:08,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:41:08,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:08,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:08,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:08,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:08,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:08,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:08,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:08,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:08,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:41:08,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 22:41:08,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:08,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:09,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:41:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:09,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-26 22:41:09,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:09,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 22:41:09,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:09,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:09,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-26 22:41:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:09,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:09,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-26 22:41:09,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:09,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 22:41:09,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:09,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:09,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:09,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 22:41:09,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:09,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-26 22:41:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:09,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:09,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:41:09,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 22:41:09,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:41:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:41:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 433 proven. 9 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-26 22:41:09,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005855162] [2020-10-26 22:41:09,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:09,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:41:09,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193027846] [2020-10-26 22:41:09,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:41:09,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:09,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:41:09,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:41:09,683 INFO L87 Difference]: Start difference. First operand 38596 states and 44294 transitions. Second operand 8 states. [2020-10-26 22:41:09,824 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-26 22:41:11,809 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:41:15,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:15,322 INFO L93 Difference]: Finished difference Result 82142 states and 94840 transitions. [2020-10-26 22:41:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:41:15,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 564 [2020-10-26 22:41:15,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:15,423 INFO L225 Difference]: With dead ends: 82142 [2020-10-26 22:41:15,423 INFO L226 Difference]: Without dead ends: 43884 [2020-10-26 22:41:15,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:41:15,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43884 states. [2020-10-26 22:41:16,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43884 to 42998. [2020-10-26 22:41:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42998 states. [2020-10-26 22:41:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42998 states to 42998 states and 49794 transitions. [2020-10-26 22:41:16,423 INFO L78 Accepts]: Start accepts. Automaton has 42998 states and 49794 transitions. Word has length 564 [2020-10-26 22:41:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:16,423 INFO L481 AbstractCegarLoop]: Abstraction has 42998 states and 49794 transitions. [2020-10-26 22:41:16,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:41:16,423 INFO L276 IsEmpty]: Start isEmpty. Operand 42998 states and 49794 transitions. [2020-10-26 22:41:16,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-10-26 22:41:16,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:16,447 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, 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:41:16,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 22:41:16,447 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:16,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:16,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1521026638, now seen corresponding path program 1 times [2020-10-26 22:41:16,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:16,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886042402] [2020-10-26 22:41:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:19,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:20,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:21,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:21,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 600 [2020-10-26 22:41:21,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:41:21,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-26 22:41:21,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:41:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 22:41:21,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:21,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:21,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:21,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:21,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:21,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:21,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 22:41:21,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:21,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:21,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:21,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:21,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:21,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:41:21,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 22:41:21,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:21,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:22,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:41:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:22,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:22,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:22,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:41:22,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:22,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 22:41:22,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:41:22,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:22,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:41:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:22,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:22,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:22,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:41:22,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:22,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 22:41:22,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:41:22,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:22,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-26 22:41:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:22,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:22,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:22,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:41:22,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:22,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 22:41:22,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 22:41:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:22,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:22,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-26 22:41:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:22,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:22,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:22,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:41:22,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 22:41:22,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-26 22:41:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:22,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 484 proven. 192 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2020-10-26 22:41:22,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886042402] [2020-10-26 22:41:22,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:22,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:22,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43217990] [2020-10-26 22:41:22,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:22,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:22,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:22,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:22,965 INFO L87 Difference]: Start difference. First operand 42998 states and 49794 transitions. Second operand 7 states. [2020-10-26 22:41:23,884 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 74