/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:51:58,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:51:58,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:51:58,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:51:58,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:51:58,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:51:58,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:51:58,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:51:58,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:51:58,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:51:58,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:51:58,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:51:58,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:51:58,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:51:58,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:51:58,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:51:58,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:51:58,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:51:58,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:51:58,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:51:58,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:51:58,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:51:58,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:51:58,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:51:58,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:51:58,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:51:58,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:51:58,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:51:58,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:51:58,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:51:58,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:51:58,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:51:58,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:51:58,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:51:58,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:51:58,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:51:58,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:51:58,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:51:58,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:51:58,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:51:58,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:51:58,455 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 [2020-10-29 04:51:58,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:51:58,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:51:58,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:51:58,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:51:58,509 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:51:58,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:51:58,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:51:58,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:51:58,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:51:58,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:51:58,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:51:58,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:51:58,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:51:58,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:51:58,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:51:58,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:51:58,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:51:58,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:51:58,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:51:58,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:51:58,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:51:58,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:51:58,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:51:58,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:51:58,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:51:58,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:51:58,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:51:58,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:51:58,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:51:58,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:51:58,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:51:58,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:51:58,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:51:58,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:51:58,954 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:51:58,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13.c [2020-10-29 04:51:59,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a68ab6760/06c8abfc806f46379ecf2b0a1254c5aa/FLAG78c758d89 [2020-10-29 04:51:59,918 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:51:59,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label13.c [2020-10-29 04:51:59,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a68ab6760/06c8abfc806f46379ecf2b0a1254c5aa/FLAG78c758d89 [2020-10-29 04:52:00,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a68ab6760/06c8abfc806f46379ecf2b0a1254c5aa [2020-10-29 04:52:00,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:52:00,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:52:00,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:52:00,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:52:00,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:52:00,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:52:00" (1/1) ... [2020-10-29 04:52:00,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14315246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:00, skipping insertion in model container [2020-10-29 04:52:00,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:52:00" (1/1) ... [2020-10-29 04:52:00,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:52:00,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:52:01,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:52:01,093 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:52:01,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:52:01,481 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:52:01,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:01 WrapperNode [2020-10-29 04:52:01,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:52:01,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:52:01,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:52:01,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:52:01,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:01" (1/1) ... [2020-10-29 04:52:01,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:01" (1/1) ... [2020-10-29 04:52:01,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:01" (1/1) ... [2020-10-29 04:52:01,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:01" (1/1) ... [2020-10-29 04:52:01,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:01" (1/1) ... [2020-10-29 04:52:01,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:01" (1/1) ... [2020-10-29 04:52:01,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:01" (1/1) ... [2020-10-29 04:52:01,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:52:01,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:52:01,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:52:01,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:52:01,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:01" (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 [2020-10-29 04:52:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:52:01,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:52:01,795 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:52:01,795 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:52:01,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:52:01,796 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:52:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:52:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:52:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:52:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:52:01,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:52:01,798 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:52:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:52:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:52:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:52:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:52:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:52:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:52:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:52:04,014 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:52:04,014 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:52:04,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:52:04 BoogieIcfgContainer [2020-10-29 04:52:04,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:52:04,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:52:04,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:52:04,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:52:04,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:52:00" (1/3) ... [2020-10-29 04:52:04,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fd6c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:52:04, skipping insertion in model container [2020-10-29 04:52:04,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:01" (2/3) ... [2020-10-29 04:52:04,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fd6c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:52:04, skipping insertion in model container [2020-10-29 04:52:04,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:52:04" (3/3) ... [2020-10-29 04:52:04,026 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label13.c [2020-10-29 04:52:04,038 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:52:04,044 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:52:04,058 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:52:04,088 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:52:04,088 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:52:04,088 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:52:04,088 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:52:04,089 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:52:04,089 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:52:04,089 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:52:04,089 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:52:04,113 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:52:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-29 04:52:04,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:04,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:04,134 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:04,140 INFO L82 PathProgramCache]: Analyzing trace with hash -2130077864, now seen corresponding path program 1 times [2020-10-29 04:52:04,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:04,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110571458] [2020-10-29 04:52:04,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:05,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:08,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:08,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 04:52:08,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3905 [2020-10-29 04:52:08,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:08,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:08,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:52:08,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:52:08,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 04:52:08,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:52:09,089 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:09,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:09,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:09,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:09,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:09,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:09,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 04:52:09,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:09,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:09,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:09,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:09,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:52:09,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:09,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110571458] [2020-10-29 04:52:09,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:52:09,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:52:09,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943122273] [2020-10-29 04:52:09,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:52:09,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:09,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:52:09,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:52:09,282 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:52:09,609 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:13,480 INFO L93 Difference]: Finished difference Result 863 states and 1524 transitions. [2020-10-29 04:52:13,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:13,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-29 04:52:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:13,518 INFO L225 Difference]: With dead ends: 863 [2020-10-29 04:52:13,518 INFO L226 Difference]: Without dead ends: 484 [2020-10-29 04:52:13,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-29 04:52:13,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 466. [2020-10-29 04:52:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-29 04:52:13,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 744 transitions. [2020-10-29 04:52:13,681 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 744 transitions. Word has length 162 [2020-10-29 04:52:13,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:13,685 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 744 transitions. [2020-10-29 04:52:13,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:52:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 744 transitions. [2020-10-29 04:52:13,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 04:52:13,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:13,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:13,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:52:13,706 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:13,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:13,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1857322313, now seen corresponding path program 1 times [2020-10-29 04:52:13,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:13,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403538656] [2020-10-29 04:52:13,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:14,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:16,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:16,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 04:52:16,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:16,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2570 [2020-10-29 04:52:16,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:16,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:52:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 04:52:16,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:52:16,781 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:16,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:16,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:16,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:16,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:16,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:16,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:52:16,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:16,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:16,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:16,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:16,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:16,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:16,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:52:16,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:16,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 04:52:16,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:16,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:52:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:17,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403538656] [2020-10-29 04:52:17,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:17,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:17,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314050692] [2020-10-29 04:52:17,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:17,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:17,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:17,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:17,065 INFO L87 Difference]: Start difference. First operand 466 states and 744 transitions. Second operand 5 states. [2020-10-29 04:52:17,502 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:21,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:21,013 INFO L93 Difference]: Finished difference Result 1357 states and 2199 transitions. [2020-10-29 04:52:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:21,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-29 04:52:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:21,030 INFO L225 Difference]: With dead ends: 1357 [2020-10-29 04:52:21,031 INFO L226 Difference]: Without dead ends: 897 [2020-10-29 04:52:21,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:21,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-10-29 04:52:21,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 888. [2020-10-29 04:52:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-10-29 04:52:21,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1358 transitions. [2020-10-29 04:52:21,090 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1358 transitions. Word has length 171 [2020-10-29 04:52:21,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:21,092 INFO L481 AbstractCegarLoop]: Abstraction has 888 states and 1358 transitions. [2020-10-29 04:52:21,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:21,092 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1358 transitions. [2020-10-29 04:52:21,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 04:52:21,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:21,099 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:21,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:52:21,100 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:21,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:21,103 INFO L82 PathProgramCache]: Analyzing trace with hash -560186619, now seen corresponding path program 1 times [2020-10-29 04:52:21,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:21,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489808025] [2020-10-29 04:52:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:23,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:25,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:25,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-29 04:52:25,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:52:25,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3935 [2020-10-29 04:52:25,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:25,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:52:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 04:52:25,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:25,610 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:25,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:25,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:25,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:25,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:25,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:25,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:52:25,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:25,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:25,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:25,805 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:52:25,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:25,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:25,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:25,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:52:25,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:25,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:52:25,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:25,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:52:25,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:25,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489808025] [2020-10-29 04:52:25,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:25,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:25,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212751495] [2020-10-29 04:52:25,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:25,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:25,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:25,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:25,929 INFO L87 Difference]: Start difference. First operand 888 states and 1358 transitions. Second operand 5 states. [2020-10-29 04:52:26,228 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:29,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:29,374 INFO L93 Difference]: Finished difference Result 2614 states and 4071 transitions. [2020-10-29 04:52:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:29,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-29 04:52:29,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:29,386 INFO L225 Difference]: With dead ends: 2614 [2020-10-29 04:52:29,387 INFO L226 Difference]: Without dead ends: 1732 [2020-10-29 04:52:29,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:29,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-10-29 04:52:29,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1726. [2020-10-29 04:52:29,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1726 states. [2020-10-29 04:52:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2629 transitions. [2020-10-29 04:52:29,452 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2629 transitions. Word has length 173 [2020-10-29 04:52:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:29,453 INFO L481 AbstractCegarLoop]: Abstraction has 1726 states and 2629 transitions. [2020-10-29 04:52:29,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2629 transitions. [2020-10-29 04:52:29,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-29 04:52:29,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:29,461 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:29,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:52:29,461 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:29,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:29,462 INFO L82 PathProgramCache]: Analyzing trace with hash 551319756, now seen corresponding path program 1 times [2020-10-29 04:52:29,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:29,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807912549] [2020-10-29 04:52:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:30,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:31,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:31,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 04:52:31,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:31,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1835 [2020-10-29 04:52:31,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:31,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:52:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:52:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 04:52:31,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:31,726 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:31,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:31,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:31,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:31,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:31,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:52:31,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:31,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:52:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:31,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:31,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:32,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:32,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:32,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:52:32,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:32,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-29 04:52:32,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:32,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:52:32,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:32,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807912549] [2020-10-29 04:52:32,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:52:32,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:52:32,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400129292] [2020-10-29 04:52:32,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:52:32,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:32,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:52:32,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:52:32,359 INFO L87 Difference]: Start difference. First operand 1726 states and 2629 transitions. Second operand 7 states. [2020-10-29 04:52:32,642 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:52:33,079 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:52:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:36,461 INFO L93 Difference]: Finished difference Result 4352 states and 6818 transitions. [2020-10-29 04:52:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:52:36,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-29 04:52:36,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:36,489 INFO L225 Difference]: With dead ends: 4352 [2020-10-29 04:52:36,489 INFO L226 Difference]: Without dead ends: 2632 [2020-10-29 04:52:36,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:52:36,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2020-10-29 04:52:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2608. [2020-10-29 04:52:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2608 states. [2020-10-29 04:52:36,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 3891 transitions. [2020-10-29 04:52:36,641 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 3891 transitions. Word has length 239 [2020-10-29 04:52:36,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:36,641 INFO L481 AbstractCegarLoop]: Abstraction has 2608 states and 3891 transitions. [2020-10-29 04:52:36,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:52:36,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 3891 transitions. [2020-10-29 04:52:36,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 04:52:36,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:36,653 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:36,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:52:36,653 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:36,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:36,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1068731003, now seen corresponding path program 1 times [2020-10-29 04:52:36,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:36,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386788647] [2020-10-29 04:52:36,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:36,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:38,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:41,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:41,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 04:52:41,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:52:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-29 04:52:41,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:41,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:52:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:52:41,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:42,095 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:42,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:42,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:42,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:42,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:42,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:42,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:52:42,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:42,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:42,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:42,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:42,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:42,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:52:42,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:42,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:52:42,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:42,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:42,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:42,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:42,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:52:42,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:42,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:52:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:42,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:42,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:52:42,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:42,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-29 04:52:42,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:42,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:42,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:42,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:52:42,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:52:42,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386788647] [2020-10-29 04:52:42,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:42,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:52:42,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062244274] [2020-10-29 04:52:42,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:52:42,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:42,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:52:42,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:52:42,848 INFO L87 Difference]: Start difference. First operand 2608 states and 3891 transitions. Second operand 7 states. [2020-10-29 04:52:43,236 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:52:43,968 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:50,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:50,024 INFO L93 Difference]: Finished difference Result 9275 states and 15303 transitions. [2020-10-29 04:52:50,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:52:50,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-29 04:52:50,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:50,091 INFO L225 Difference]: With dead ends: 9275 [2020-10-29 04:52:50,091 INFO L226 Difference]: Without dead ends: 6673 [2020-10-29 04:52:50,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:52:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6673 states. [2020-10-29 04:52:50,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6673 to 6664. [2020-10-29 04:52:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6664 states. [2020-10-29 04:52:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6664 states to 6664 states and 11037 transitions. [2020-10-29 04:52:50,404 INFO L78 Accepts]: Start accepts. Automaton has 6664 states and 11037 transitions. Word has length 248 [2020-10-29 04:52:50,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:50,405 INFO L481 AbstractCegarLoop]: Abstraction has 6664 states and 11037 transitions. [2020-10-29 04:52:50,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:52:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 6664 states and 11037 transitions. [2020-10-29 04:52:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-29 04:52:50,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:50,454 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:50,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:52:50,455 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:50,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:50,455 INFO L82 PathProgramCache]: Analyzing trace with hash 761716287, now seen corresponding path program 1 times [2020-10-29 04:52:50,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:50,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593189150] [2020-10-29 04:52:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:50,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:50,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:51,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:55,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:55,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-29 04:52:55,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:52:55,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4965 [2020-10-29 04:52:55,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:55,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:55,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:55,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:52:55,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 04:52:55,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:55,779 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:55,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:55,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:55,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:55,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:55,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:52:55,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:55,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:55,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:55,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:55,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:55,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:52:55,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:55,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 04:52:55,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:55,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:55,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:52:55,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:55,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:52:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:56,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:56,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:56,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:52:56,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:56,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 04:52:56,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:56,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:56,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:56,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:56,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:52:56,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:52:56,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593189150] [2020-10-29 04:52:56,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:56,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:52:56,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121782629] [2020-10-29 04:52:56,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:52:56,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:56,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:52:56,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:52:56,483 INFO L87 Difference]: Start difference. First operand 6664 states and 11037 transitions. Second operand 7 states. [2020-10-29 04:52:56,768 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:52:57,168 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:01,124 INFO L93 Difference]: Finished difference Result 18012 states and 34209 transitions. [2020-10-29 04:53:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:53:01,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-29 04:53:01,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:01,260 INFO L225 Difference]: With dead ends: 18012 [2020-10-29 04:53:01,260 INFO L226 Difference]: Without dead ends: 11354 [2020-10-29 04:53:01,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:53:01,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11354 states. [2020-10-29 04:53:01,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11354 to 11099. [2020-10-29 04:53:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11099 states. [2020-10-29 04:53:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11099 states to 11099 states and 19009 transitions. [2020-10-29 04:53:01,935 INFO L78 Accepts]: Start accepts. Automaton has 11099 states and 19009 transitions. Word has length 250 [2020-10-29 04:53:01,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:01,936 INFO L481 AbstractCegarLoop]: Abstraction has 11099 states and 19009 transitions. [2020-10-29 04:53:01,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:53:01,936 INFO L276 IsEmpty]: Start isEmpty. Operand 11099 states and 19009 transitions. [2020-10-29 04:53:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 04:53:02,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:02,024 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:53:02,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:53:02,024 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:02,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:02,025 INFO L82 PathProgramCache]: Analyzing trace with hash 924579151, now seen corresponding path program 1 times [2020-10-29 04:53:02,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:02,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344525906] [2020-10-29 04:53:02,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:02,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:02,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:02,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:03,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:07,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:07,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 04:53:07,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:53:07,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 04:53:07,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:07,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 04:53:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 04:53:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:07,420 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:07,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:07,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:07,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:07,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:07,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:53:07,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:07,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:07,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:07,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:07,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:53:07,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:53:07,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:07,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:07,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:53:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:07,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:07,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:07,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:07,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:53:07,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:53:07,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:53:07,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:07,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:53:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:07,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 04:53:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:07,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:07,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:07,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:53:07,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:07,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 04:53:07,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:07,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:07,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:07,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 04:53:07,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:53:07,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 04:53:07,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344525906] [2020-10-29 04:53:07,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:07,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:53:07,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511402057] [2020-10-29 04:53:07,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:53:07,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:07,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:53:07,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:53:07,808 INFO L87 Difference]: Start difference. First operand 11099 states and 19009 transitions. Second operand 6 states. [2020-10-29 04:53:08,084 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:10,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:10,574 INFO L93 Difference]: Finished difference Result 22194 states and 38083 transitions. [2020-10-29 04:53:10,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:53:10,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 258 [2020-10-29 04:53:10,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:10,650 INFO L225 Difference]: With dead ends: 22194 [2020-10-29 04:53:10,650 INFO L226 Difference]: Without dead ends: 11101 [2020-10-29 04:53:10,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:53:10,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11101 states. [2020-10-29 04:53:11,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11101 to 11097. [2020-10-29 04:53:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11097 states. [2020-10-29 04:53:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11097 states to 11097 states and 19001 transitions. [2020-10-29 04:53:11,258 INFO L78 Accepts]: Start accepts. Automaton has 11097 states and 19001 transitions. Word has length 258 [2020-10-29 04:53:11,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:11,258 INFO L481 AbstractCegarLoop]: Abstraction has 11097 states and 19001 transitions. [2020-10-29 04:53:11,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:53:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 11097 states and 19001 transitions. [2020-10-29 04:53:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 04:53:11,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:11,328 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:11,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:53:11,328 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:11,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:11,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1477602639, now seen corresponding path program 1 times [2020-10-29 04:53:11,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:11,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329594703] [2020-10-29 04:53:11,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:11,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:11,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:13,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:15,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:15,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 04:53:15,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:53:15,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4009 [2020-10-29 04:53:15,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:15,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 04:53:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:53:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:15,682 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:15,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:15,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:15,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:15,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:15,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:15,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:53:15,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:15,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:15,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:15,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:15,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:15,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:53:15,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 04:53:15,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:15,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:53:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:15,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 04:53:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:15,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:16,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:16,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:53:16,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:16,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 04:53:16,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:16,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:53:16,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:53:16,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329594703] [2020-10-29 04:53:16,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:16,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:53:16,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313648065] [2020-10-29 04:53:16,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:53:16,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:16,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:53:16,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:53:16,542 INFO L87 Difference]: Start difference. First operand 11097 states and 19001 transitions. Second operand 7 states. [2020-10-29 04:53:17,263 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:53:18,249 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 04:53:21,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:21,894 INFO L93 Difference]: Finished difference Result 24636 states and 55987 transitions. [2020-10-29 04:53:21,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:53:21,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-29 04:53:21,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:22,078 INFO L225 Difference]: With dead ends: 24636 [2020-10-29 04:53:22,078 INFO L226 Difference]: Without dead ends: 13545 [2020-10-29 04:53:22,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:53:22,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13545 states. [2020-10-29 04:53:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13545 to 12545. [2020-10-29 04:53:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12545 states. [2020-10-29 04:53:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12545 states to 12545 states and 21545 transitions. [2020-10-29 04:53:23,116 INFO L78 Accepts]: Start accepts. Automaton has 12545 states and 21545 transitions. Word has length 258 [2020-10-29 04:53:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:23,116 INFO L481 AbstractCegarLoop]: Abstraction has 12545 states and 21545 transitions. [2020-10-29 04:53:23,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:53:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand 12545 states and 21545 transitions. [2020-10-29 04:53:23,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-29 04:53:23,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:23,179 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:23,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:53:23,179 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:23,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:23,180 INFO L82 PathProgramCache]: Analyzing trace with hash -647175917, now seen corresponding path program 1 times [2020-10-29 04:53:23,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:23,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566965020] [2020-10-29 04:53:23,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:23,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:23,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:25,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:25,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 04:53:25,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:53:25,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2302 [2020-10-29 04:53:25,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:25,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:53:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:53:25,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:25,865 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:25,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:25,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:25,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:25,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:25,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:53:25,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:25,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:25,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:25,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:26,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:26,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:53:26,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:26,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 04:53:26,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:26,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:53:26,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:26,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:53:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:26,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:26,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:26,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:53:26,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:26,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 04:53:26,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:26,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:53:26,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:53:26,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566965020] [2020-10-29 04:53:26,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:26,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:53:26,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512984997] [2020-10-29 04:53:26,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:53:26,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:26,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:53:26,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:53:26,592 INFO L87 Difference]: Start difference. First operand 12545 states and 21545 transitions. Second operand 7 states. [2020-10-29 04:53:27,130 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:53:27,437 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:53:33,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:33,538 INFO L93 Difference]: Finished difference Result 38641 states and 80680 transitions. [2020-10-29 04:53:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:53:33,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-29 04:53:33,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:33,808 INFO L225 Difference]: With dead ends: 38641 [2020-10-29 04:53:33,808 INFO L226 Difference]: Without dead ends: 26102 [2020-10-29 04:53:33,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:53:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26102 states. [2020-10-29 04:53:35,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26102 to 24415. [2020-10-29 04:53:35,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24415 states. [2020-10-29 04:53:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24415 states to 24415 states and 42092 transitions. [2020-10-29 04:53:35,447 INFO L78 Accepts]: Start accepts. Automaton has 24415 states and 42092 transitions. Word has length 260 [2020-10-29 04:53:35,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:35,447 INFO L481 AbstractCegarLoop]: Abstraction has 24415 states and 42092 transitions. [2020-10-29 04:53:35,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:53:35,447 INFO L276 IsEmpty]: Start isEmpty. Operand 24415 states and 42092 transitions. [2020-10-29 04:53:35,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-29 04:53:35,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:35,557 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:53:35,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:53:35,557 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:35,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:35,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1820953543, now seen corresponding path program 1 times [2020-10-29 04:53:35,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:35,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605150839] [2020-10-29 04:53:35,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:35,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:36,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:36,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 04:53:36,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:36,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-29 04:53:36,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:36,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:53:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:53:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 04:53:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:36,783 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:36,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:36,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:36,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:36,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:36,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:36,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:53:36,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:36,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:53:36,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:36,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:37,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:37,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 04:53:37,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:37,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-29 04:53:37,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:37,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:37,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:37,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 04:53:37,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:53:37,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605150839] [2020-10-29 04:53:37,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:53:37,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:53:37,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711157032] [2020-10-29 04:53:37,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:53:37,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:37,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:53:37,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:53:37,332 INFO L87 Difference]: Start difference. First operand 24415 states and 42092 transitions. Second operand 7 states. [2020-10-29 04:53:37,580 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:38,038 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:43,103 INFO L93 Difference]: Finished difference Result 60297 states and 139002 transitions. [2020-10-29 04:53:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:53:43,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-29 04:53:43,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:43,834 INFO L225 Difference]: With dead ends: 60297 [2020-10-29 04:53:43,835 INFO L226 Difference]: Without dead ends: 35888 [2020-10-29 04:53:43,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:53:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35888 states. [2020-10-29 04:53:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35888 to 33060. [2020-10-29 04:53:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33060 states. [2020-10-29 04:53:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33060 states to 33060 states and 53365 transitions. [2020-10-29 04:53:46,980 INFO L78 Accepts]: Start accepts. Automaton has 33060 states and 53365 transitions. Word has length 263 [2020-10-29 04:53:46,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:46,981 INFO L481 AbstractCegarLoop]: Abstraction has 33060 states and 53365 transitions. [2020-10-29 04:53:46,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:53:46,981 INFO L276 IsEmpty]: Start isEmpty. Operand 33060 states and 53365 transitions. [2020-10-29 04:53:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-29 04:53:47,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:47,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:47,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:53:47,128 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:47,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1111011570, now seen corresponding path program 1 times [2020-10-29 04:53:47,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:47,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052739803] [2020-10-29 04:53:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:48,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:48,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-29 04:53:48,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-10-29 04:53:48,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:48,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:53:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 04:53:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:48,470 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:48,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:48,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:48,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:48,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:48,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:53:48,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:48,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:48,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:48,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:48,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:48,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:48,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:53:48,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:53:48,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:48,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:53:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:48,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:53:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:49,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:49,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 04:53:49,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:49,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-29 04:53:49,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:49,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:49,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:49,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:49,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 04:53:49,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:53:49,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052739803] [2020-10-29 04:53:49,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:49,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:53:49,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785492646] [2020-10-29 04:53:49,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:53:49,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:49,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:53:49,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:53:49,255 INFO L87 Difference]: Start difference. First operand 33060 states and 53365 transitions. Second operand 7 states. [2020-10-29 04:53:49,721 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:50,911 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:54,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:54,356 INFO L93 Difference]: Finished difference Result 64834 states and 108750 transitions. [2020-10-29 04:53:54,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:53:54,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-29 04:53:54,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:54,513 INFO L225 Difference]: With dead ends: 64834 [2020-10-29 04:53:54,514 INFO L226 Difference]: Without dead ends: 31784 [2020-10-29 04:53:54,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:53:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31784 states. [2020-10-29 04:53:55,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31784 to 31209. [2020-10-29 04:53:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31209 states. [2020-10-29 04:53:56,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31209 states to 31209 states and 43916 transitions. [2020-10-29 04:53:56,182 INFO L78 Accepts]: Start accepts. Automaton has 31209 states and 43916 transitions. Word has length 284 [2020-10-29 04:53:56,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:56,182 INFO L481 AbstractCegarLoop]: Abstraction has 31209 states and 43916 transitions. [2020-10-29 04:53:56,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:53:56,182 INFO L276 IsEmpty]: Start isEmpty. Operand 31209 states and 43916 transitions. [2020-10-29 04:53:56,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-29 04:53:56,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:56,277 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:56,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:53:56,278 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:56,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:56,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1606313667, now seen corresponding path program 1 times [2020-10-29 04:53:56,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:56,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063396431] [2020-10-29 04:53:56,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:56,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:56,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:59,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:59,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 04:53:59,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:53:59,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2941 [2020-10-29 04:53:59,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:59,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:59,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:53:59,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:53:59,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 04:53:59,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:59,597 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:59,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:59,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:59,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:59,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:59,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:53:59,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:59,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:53:59,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:59,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:59,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:00,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:00,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 04:54:00,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:00,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 04:54:00,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:00,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:00,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 04:54:00,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:00,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:54:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:00,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:00,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:00,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:54:00,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:00,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-29 04:54:00,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:00,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:54:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:54:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:54:00,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063396431] [2020-10-29 04:54:00,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:00,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:54:00,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678007964] [2020-10-29 04:54:00,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:54:00,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:00,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:54:00,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:54:00,431 INFO L87 Difference]: Start difference. First operand 31209 states and 43916 transitions. Second operand 9 states. [2020-10-29 04:54:00,722 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:01,416 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2020-10-29 04:54:05,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:05,471 INFO L93 Difference]: Finished difference Result 60889 states and 84086 transitions. [2020-10-29 04:54:05,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:54:05,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 303 [2020-10-29 04:54:05,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:05,613 INFO L225 Difference]: With dead ends: 60889 [2020-10-29 04:54:05,613 INFO L226 Difference]: Without dead ends: 30640 [2020-10-29 04:54:05,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:54:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30640 states. [2020-10-29 04:54:06,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30640 to 30568. [2020-10-29 04:54:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30568 states. [2020-10-29 04:54:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30568 states to 30568 states and 40672 transitions. [2020-10-29 04:54:06,902 INFO L78 Accepts]: Start accepts. Automaton has 30568 states and 40672 transitions. Word has length 303 [2020-10-29 04:54:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:06,903 INFO L481 AbstractCegarLoop]: Abstraction has 30568 states and 40672 transitions. [2020-10-29 04:54:06,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:54:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 30568 states and 40672 transitions. [2020-10-29 04:54:06,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-29 04:54:06,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:06,958 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:54:06,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:54:06,958 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:06,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:06,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2136254938, now seen corresponding path program 1 times [2020-10-29 04:54:06,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:06,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649894257] [2020-10-29 04:54:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:07,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:12,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-29 04:54:12,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 04:54:12,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:12,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-29 04:54:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-29 04:54:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:12,334 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:12,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:12,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:12,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:12,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:54:12,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:12,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:12,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:12,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:12,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:12,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:12,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:12,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:12,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:54:12,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:12,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:54:12,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:12,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:12,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:12,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:12,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:12,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:12,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:54:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:12,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:12,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:54:12,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:12,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:54:12,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:12,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:12,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:12,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:12,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:12,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:12,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 04:54:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:12,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:12,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:54:12,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:12,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 04:54:12,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:12,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:12,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:12,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:12,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 04:54:12,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 165 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-29 04:54:12,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649894257] [2020-10-29 04:54:12,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:12,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:54:12,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821149983] [2020-10-29 04:54:12,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:54:12,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:12,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:54:12,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:54:12,855 INFO L87 Difference]: Start difference. First operand 30568 states and 40672 transitions. Second operand 5 states. [2020-10-29 04:54:13,237 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:16,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:16,426 INFO L93 Difference]: Finished difference Result 82164 states and 110494 transitions. [2020-10-29 04:54:16,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:54:16,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 335 [2020-10-29 04:54:16,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:16,607 INFO L225 Difference]: With dead ends: 82164 [2020-10-29 04:54:16,608 INFO L226 Difference]: Without dead ends: 52036 [2020-10-29 04:54:16,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:54:16,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52036 states. [2020-10-29 04:54:18,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52036 to 50755. [2020-10-29 04:54:18,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50755 states. [2020-10-29 04:54:18,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50755 states to 50755 states and 65208 transitions. [2020-10-29 04:54:18,596 INFO L78 Accepts]: Start accepts. Automaton has 50755 states and 65208 transitions. Word has length 335 [2020-10-29 04:54:18,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:18,597 INFO L481 AbstractCegarLoop]: Abstraction has 50755 states and 65208 transitions. [2020-10-29 04:54:18,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:54:18,597 INFO L276 IsEmpty]: Start isEmpty. Operand 50755 states and 65208 transitions. [2020-10-29 04:54:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-29 04:54:18,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:18,678 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:18,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:54:18,679 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:18,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:18,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1669174398, now seen corresponding path program 1 times [2020-10-29 04:54:18,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:18,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740122362] [2020-10-29 04:54:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:18,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:21,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:23,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:23,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-29 04:54:23,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:23,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4684 [2020-10-29 04:54:23,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:23,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:54:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:54:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 04:54:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:23,749 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:23,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:23,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:23,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:23,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:23,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:23,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:54:23,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:23,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:23,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:23,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:23,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:54:23,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:23,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:24,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:24,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 04:54:24,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:24,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 04:54:24,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:24,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:24,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:24,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:24,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 04:54:24,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:24,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:54:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:24,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:24,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:24,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 04:54:24,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:24,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 04:54:24,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:24,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 04:54:24,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 04:54:24,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740122362] [2020-10-29 04:54:24,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:24,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:54:24,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203546483] [2020-10-29 04:54:24,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:54:24,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:24,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:54:24,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:54:24,613 INFO L87 Difference]: Start difference. First operand 50755 states and 65208 transitions. Second operand 7 states. [2020-10-29 04:54:24,876 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:54:27,181 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:29,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:29,313 INFO L93 Difference]: Finished difference Result 110110 states and 142297 transitions. [2020-10-29 04:54:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:54:29,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-29 04:54:29,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:29,522 INFO L225 Difference]: With dead ends: 110110 [2020-10-29 04:54:29,522 INFO L226 Difference]: Without dead ends: 69753 [2020-10-29 04:54:29,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:54:29,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69753 states. [2020-10-29 04:54:31,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69753 to 68290. [2020-10-29 04:54:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68290 states. [2020-10-29 04:54:32,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68290 states to 68290 states and 87172 transitions. [2020-10-29 04:54:32,054 INFO L78 Accepts]: Start accepts. Automaton has 68290 states and 87172 transitions. Word has length 342 [2020-10-29 04:54:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:32,055 INFO L481 AbstractCegarLoop]: Abstraction has 68290 states and 87172 transitions. [2020-10-29 04:54:32,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:54:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 68290 states and 87172 transitions. [2020-10-29 04:54:32,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-29 04:54:32,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:32,160 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 04:54:32,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:54:32,160 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:32,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:32,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1427007508, now seen corresponding path program 1 times [2020-10-29 04:54:32,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:32,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033343896] [2020-10-29 04:54:32,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:37,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:37,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-29 04:54:37,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:37,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 04:54:37,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:37,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:37,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:37,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-29 04:54:37,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 04:54:37,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:37,556 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:37,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:37,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:37,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:37,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:37,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:37,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:54:37,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:37,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:37,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:37,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:37,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:37,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:37,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:37,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:37,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:37,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 04:54:37,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:37,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 04:54:37,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:37,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:37,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:37,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:54:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:37,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:37,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:37,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:54:37,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:37,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:54:37,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:37,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:54:37,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:37,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 04:54:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:38,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:38,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 04:54:38,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:38,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-29 04:54:38,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:38,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 04:54:38,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:54:38,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033343896] [2020-10-29 04:54:38,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:38,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:54:38,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880638107] [2020-10-29 04:54:38,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:54:38,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:38,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:54:38,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:54:38,255 INFO L87 Difference]: Start difference. First operand 68290 states and 87172 transitions. Second operand 8 states. [2020-10-29 04:54:38,507 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:40,858 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:42,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:42,909 INFO L93 Difference]: Finished difference Result 120622 states and 154748 transitions. [2020-10-29 04:54:42,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:54:42,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 352 [2020-10-29 04:54:42,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:43,152 INFO L225 Difference]: With dead ends: 120622 [2020-10-29 04:54:43,153 INFO L226 Difference]: Without dead ends: 63006 [2020-10-29 04:54:43,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:54:43,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63006 states. [2020-10-29 04:54:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63006 to 62551. [2020-10-29 04:54:45,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62551 states. [2020-10-29 04:54:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62551 states to 62551 states and 79312 transitions. [2020-10-29 04:54:45,400 INFO L78 Accepts]: Start accepts. Automaton has 62551 states and 79312 transitions. Word has length 352 [2020-10-29 04:54:45,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:45,401 INFO L481 AbstractCegarLoop]: Abstraction has 62551 states and 79312 transitions. [2020-10-29 04:54:45,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:54:45,401 INFO L276 IsEmpty]: Start isEmpty. Operand 62551 states and 79312 transitions. [2020-10-29 04:54:45,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-29 04:54:45,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:45,726 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 04:54:45,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:54:45,727 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:45,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:45,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1227486009, now seen corresponding path program 1 times [2020-10-29 04:54:45,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:45,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704812672] [2020-10-29 04:54:45,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:46,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:47,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:50,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:50,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-29 04:54:50,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 04:54:50,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:50,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-29 04:54:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 04:54:50,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:51,155 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:51,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:51,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:51,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:51,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:54:51,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:51,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:51,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:51,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:51,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:51,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 04:54:51,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:51,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 04:54:51,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:51,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:51,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:51,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:54:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:51,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:51,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:51,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:54:51,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:51,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:54:51,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:51,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:51,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:51,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:51,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:54:51,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:51,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 04:54:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:51,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:51,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:51,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 04:54:51,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:51,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 04:54:51,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:51,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 04:54:51,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 04:54:51,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704812672] [2020-10-29 04:54:51,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:51,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:54:51,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77180017] [2020-10-29 04:54:51,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:54:51,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:51,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:54:51,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:54:51,845 INFO L87 Difference]: Start difference. First operand 62551 states and 79312 transitions. Second operand 7 states. [2020-10-29 04:54:52,116 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:53,184 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:56,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:56,605 INFO L93 Difference]: Finished difference Result 121742 states and 155861 transitions. [2020-10-29 04:54:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:54:56,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 358 [2020-10-29 04:54:56,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:56,786 INFO L225 Difference]: With dead ends: 121742 [2020-10-29 04:54:56,786 INFO L226 Difference]: Without dead ends: 62567 [2020-10-29 04:54:57,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:54:57,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62567 states. [2020-10-29 04:54:58,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62567 to 62392. [2020-10-29 04:54:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62392 states. [2020-10-29 04:54:58,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62392 states to 62392 states and 76637 transitions. [2020-10-29 04:54:58,832 INFO L78 Accepts]: Start accepts. Automaton has 62392 states and 76637 transitions. Word has length 358 [2020-10-29 04:54:58,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:58,833 INFO L481 AbstractCegarLoop]: Abstraction has 62392 states and 76637 transitions. [2020-10-29 04:54:58,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:54:58,833 INFO L276 IsEmpty]: Start isEmpty. Operand 62392 states and 76637 transitions. [2020-10-29 04:54:58,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-29 04:54:58,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:58,934 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:58,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:54:58,934 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:58,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:58,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1000823078, now seen corresponding path program 1 times [2020-10-29 04:54:58,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:58,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972582666] [2020-10-29 04:54:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:59,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:00,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:00,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-29 04:55:00,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 868 [2020-10-29 04:55:00,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:00,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 04:55:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 04:55:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:00,374 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:00,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:00,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:00,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:00,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:00,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:55:00,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:00,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:00,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:00,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:00,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:00,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:00,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 04:55:00,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:00,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 04:55:00,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:00,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 04:55:00,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:00,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 04:55:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:00,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:01,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:01,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 04:55:01,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:01,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-29 04:55:01,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:01,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:01,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:01,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:01,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 04:55:01,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:55:01,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972582666] [2020-10-29 04:55:01,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:01,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:55:01,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530838794] [2020-10-29 04:55:01,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:55:01,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:01,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:55:01,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:55:01,296 INFO L87 Difference]: Start difference. First operand 62392 states and 76637 transitions. Second operand 7 states. [2020-10-29 04:55:01,804 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:03,883 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:07,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:07,658 INFO L93 Difference]: Finished difference Result 122010 states and 159901 transitions. [2020-10-29 04:55:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:55:07,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 363 [2020-10-29 04:55:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:07,949 INFO L225 Difference]: With dead ends: 122010 [2020-10-29 04:55:07,949 INFO L226 Difference]: Without dead ends: 62999 [2020-10-29 04:55:08,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:55:08,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62999 states. [2020-10-29 04:55:09,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62999 to 60004. [2020-10-29 04:55:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60004 states. [2020-10-29 04:55:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60004 states to 60004 states and 71576 transitions. [2020-10-29 04:55:10,112 INFO L78 Accepts]: Start accepts. Automaton has 60004 states and 71576 transitions. Word has length 363 [2020-10-29 04:55:10,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:10,112 INFO L481 AbstractCegarLoop]: Abstraction has 60004 states and 71576 transitions. [2020-10-29 04:55:10,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:55:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 60004 states and 71576 transitions. [2020-10-29 04:55:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-29 04:55:10,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:10,200 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:10,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 04:55:10,201 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:10,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:10,201 INFO L82 PathProgramCache]: Analyzing trace with hash 113145121, now seen corresponding path program 1 times [2020-10-29 04:55:10,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:10,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803435838] [2020-10-29 04:55:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:10,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:11,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:15,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:15,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-29 04:55:15,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:15,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:55:15,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:15,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-29 04:55:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 04:55:15,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:15,595 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:15,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:15,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:15,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:15,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:15,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:15,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:55:15,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:15,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:15,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:15,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:15,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:15,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 04:55:15,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:15,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 04:55:15,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:15,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:15,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:55:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:15,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:15,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:15,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 04:55:15,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 04:55:15,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:15,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 04:55:15,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:15,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-29 04:55:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:16,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:16,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:16,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 04:55:16,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 04:55:16,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:16,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 04:55:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-29 04:55:16,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803435838] [2020-10-29 04:55:16,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:16,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:55:16,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688287707] [2020-10-29 04:55:16,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:55:16,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:16,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:55:16,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:55:16,769 INFO L87 Difference]: Start difference. First operand 60004 states and 71576 transitions. Second operand 7 states. [2020-10-29 04:55:17,332 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:55:19,426 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:55:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:23,620 INFO L93 Difference]: Finished difference Result 131136 states and 166697 transitions. [2020-10-29 04:55:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:55:23,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 409 [2020-10-29 04:55:23,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:23,896 INFO L225 Difference]: With dead ends: 131136 [2020-10-29 04:55:23,896 INFO L226 Difference]: Without dead ends: 72414 [2020-10-29 04:55:23,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110