/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:34:59,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:34:59,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:34:59,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:34:59,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:34:59,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:34:59,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:34:59,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:34:59,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:34:59,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:34:59,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:34:59,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:34:59,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:34:59,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:34:59,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:34:59,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:34:59,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:34:59,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:34:59,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:34:59,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:34:59,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:34:59,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:34:59,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:34:59,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:34:59,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:34:59,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:34:59,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:34:59,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:34:59,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:34:59,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:34:59,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:34:59,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:34:59,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:34:59,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:34:59,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:34:59,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:34:59,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:34:59,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:34:59,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:34:59,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:34:59,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:34:59,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 20:34:59,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:34:59,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:34:59,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:34:59,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:34:59,568 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:34:59,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:34:59,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:34:59,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:34:59,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:34:59,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:34:59,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:34:59,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:34:59,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:34:59,570 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:34:59,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:34:59,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:34:59,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:34:59,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:34:59,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:34:59,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:34:59,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:34:59,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:34:59,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:34:59,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:34:59,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:34:59,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:34:59,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:34:59,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:34:59,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:34:59,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:35:00,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:35:00,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:35:00,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:35:00,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:35:00,041 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:35:00,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-10-26 20:35:00,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18b177816/d9dafa2e829640a981707f30c6954eca/FLAG7b745099e [2020-10-26 20:35:00,892 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:35:00,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-10-26 20:35:00,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18b177816/d9dafa2e829640a981707f30c6954eca/FLAG7b745099e [2020-10-26 20:35:01,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18b177816/d9dafa2e829640a981707f30c6954eca [2020-10-26 20:35:01,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:35:01,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:35:01,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:35:01,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:35:01,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:35:01,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:35:01" (1/1) ... [2020-10-26 20:35:01,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a5d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:01, skipping insertion in model container [2020-10-26 20:35:01,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:35:01" (1/1) ... [2020-10-26 20:35:01,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:35:01,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:35:01,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:35:01,761 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:35:01,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:35:01,879 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:35:01,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:01 WrapperNode [2020-10-26 20:35:01,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:35:01,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:35:01,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:35:01,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:35:01,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:01" (1/1) ... [2020-10-26 20:35:01,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:01" (1/1) ... [2020-10-26 20:35:01,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:01" (1/1) ... [2020-10-26 20:35:01,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:01" (1/1) ... [2020-10-26 20:35:01,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:01" (1/1) ... [2020-10-26 20:35:01,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:01" (1/1) ... [2020-10-26 20:35:01,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:01" (1/1) ... [2020-10-26 20:35:02,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:35:02,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:35:02,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:35:02,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:35:02,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:01" (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 [2020-10-26 20:35:02,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:35:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:35:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:35:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:35:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:35:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:35:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:35:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:35:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:35:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:35:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:35:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:35:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:35:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:35:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:35:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:35:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:35:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:35:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:35:03,407 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:35:03,407 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:35:03,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:35:03 BoogieIcfgContainer [2020-10-26 20:35:03,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:35:03,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:35:03,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:35:03,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:35:03,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:35:01" (1/3) ... [2020-10-26 20:35:03,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67318a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:35:03, skipping insertion in model container [2020-10-26 20:35:03,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:35:01" (2/3) ... [2020-10-26 20:35:03,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67318a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:35:03, skipping insertion in model container [2020-10-26 20:35:03,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:35:03" (3/3) ... [2020-10-26 20:35:03,420 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2020-10-26 20:35:03,434 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:35:03,439 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:35:03,453 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:35:03,481 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:35:03,481 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:35:03,481 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:35:03,482 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:35:03,482 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:35:03,482 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:35:03,482 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:35:03,482 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:35:03,512 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-26 20:35:03,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-26 20:35:03,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:03,524 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] [2020-10-26 20:35:03,524 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:03,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:03,531 INFO L82 PathProgramCache]: Analyzing trace with hash 671334971, now seen corresponding path program 1 times [2020-10-26 20:35:03,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:03,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140164978] [2020-10-26 20:35:03,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:03,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:04,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:05,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:05,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-26 20:35:05,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2074 [2020-10-26 20:35:05,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 20:35:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-26 20:35:05,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 20:35:06,621 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-26 20:35:06,765 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-26 20:35:06,893 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-26 20:35:07,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:07,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:07,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:07,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:07,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:07,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 20:35:07,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:07,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:07,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:35:07,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140164978] [2020-10-26 20:35:07,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:35:07,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-26 20:35:07,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202905431] [2020-10-26 20:35:07,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 20:35:07,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:07,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 20:35:07,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:35:07,570 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 12 states. [2020-10-26 20:35:07,779 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-26 20:35:07,987 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-26 20:35:08,188 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-26 20:35:08,458 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-26 20:35:08,919 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 141 [2020-10-26 20:35:09,432 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 138 [2020-10-26 20:35:10,207 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 135 [2020-10-26 20:35:11,083 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 132 [2020-10-26 20:35:11,663 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 127 [2020-10-26 20:35:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:12,952 INFO L93 Difference]: Finished difference Result 479 states and 799 transitions. [2020-10-26 20:35:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:35:12,955 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-10-26 20:35:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:12,967 INFO L225 Difference]: With dead ends: 479 [2020-10-26 20:35:12,967 INFO L226 Difference]: Without dead ends: 206 [2020-10-26 20:35:12,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2020-10-26 20:35:12,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-26 20:35:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-10-26 20:35:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-26 20:35:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 278 transitions. [2020-10-26 20:35:13,041 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 278 transitions. Word has length 89 [2020-10-26 20:35:13,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:13,042 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 278 transitions. [2020-10-26 20:35:13,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 20:35:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 278 transitions. [2020-10-26 20:35:13,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-26 20:35:13,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:13,049 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 20:35:13,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:35:13,049 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:13,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1652294877, now seen corresponding path program 1 times [2020-10-26 20:35:13,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:13,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298577796] [2020-10-26 20:35:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:13,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:13,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:14,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:14,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-26 20:35:14,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:35:14,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1644 [2020-10-26 20:35:14,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:35:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 20:35:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:35:14,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:14,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:15,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:15,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:15,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 20:35:15,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:15,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:15,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-26 20:35:15,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:15,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:15,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:15,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:15,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:15,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:15,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:35:15,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:35:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:35:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:35:15,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298577796] [2020-10-26 20:35:15,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:15,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:35:15,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484135909] [2020-10-26 20:35:15,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:35:15,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:15,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:35:15,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:35:15,178 INFO L87 Difference]: Start difference. First operand 206 states and 278 transitions. Second operand 6 states. [2020-10-26 20:35:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:16,660 INFO L93 Difference]: Finished difference Result 485 states and 696 transitions. [2020-10-26 20:35:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:35:16,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-26 20:35:16,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:16,669 INFO L225 Difference]: With dead ends: 485 [2020-10-26 20:35:16,670 INFO L226 Difference]: Without dead ends: 345 [2020-10-26 20:35:16,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:16,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-26 20:35:16,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2020-10-26 20:35:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-26 20:35:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2020-10-26 20:35:16,746 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 97 [2020-10-26 20:35:16,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:16,747 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2020-10-26 20:35:16,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:35:16,747 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2020-10-26 20:35:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-26 20:35:16,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:16,757 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:16,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:35:16,758 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:16,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:16,759 INFO L82 PathProgramCache]: Analyzing trace with hash 281747096, now seen corresponding path program 1 times [2020-10-26 20:35:16,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:16,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829963425] [2020-10-26 20:35:16,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:17,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:19,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:21,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:21,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 20:35:21,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:35:21,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4715 [2020-10-26 20:35:21,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:35:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 20:35:21,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:35:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:21,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:21,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:21,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:35:21,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:21,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:21,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:21,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:21,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:21,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:21,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:35:21,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:35:21,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:35:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:21,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:21,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:21,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:35:21,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 20:35:21,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:35:21,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:35:21,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829963425] [2020-10-26 20:35:21,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:21,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:35:21,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216213088] [2020-10-26 20:35:21,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:35:21,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:21,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:35:21,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:35:21,875 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand 8 states. [2020-10-26 20:35:23,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:23,540 INFO L93 Difference]: Finished difference Result 925 states and 1316 transitions. [2020-10-26 20:35:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:35:23,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-26 20:35:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:23,555 INFO L225 Difference]: With dead ends: 925 [2020-10-26 20:35:23,556 INFO L226 Difference]: Without dead ends: 648 [2020-10-26 20:35:23,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:35:23,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-10-26 20:35:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 623. [2020-10-26 20:35:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2020-10-26 20:35:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 837 transitions. [2020-10-26 20:35:23,638 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 837 transitions. Word has length 106 [2020-10-26 20:35:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:23,638 INFO L481 AbstractCegarLoop]: Abstraction has 623 states and 837 transitions. [2020-10-26 20:35:23,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:35:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 837 transitions. [2020-10-26 20:35:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-26 20:35:23,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:23,648 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:23,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:35:23,648 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:23,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:23,649 INFO L82 PathProgramCache]: Analyzing trace with hash -939265097, now seen corresponding path program 1 times [2020-10-26 20:35:23,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:23,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313522916] [2020-10-26 20:35:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:23,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:23,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:24,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:26,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:28,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:28,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 20:35:28,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:35:28,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4896 [2020-10-26 20:35:28,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:28,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:35:28,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:28,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 20:35:28,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:28,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:28,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:28,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:28,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:28,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:28,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:35:28,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:28,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:28,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:28,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:28,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:28,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:28,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:28,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:28,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:35:28,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:35:28,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:35:28,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:28,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:35:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:28,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:28,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:28,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:35:28,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:28,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:35:28,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:35:28,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:35:28,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313522916] [2020-10-26 20:35:28,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:28,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:35:28,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678641699] [2020-10-26 20:35:28,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:35:28,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:28,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:35:28,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:35:28,901 INFO L87 Difference]: Start difference. First operand 623 states and 837 transitions. Second operand 8 states. [2020-10-26 20:35:29,044 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:35:30,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:30,799 INFO L93 Difference]: Finished difference Result 1490 states and 2097 transitions. [2020-10-26 20:35:30,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:35:30,803 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-10-26 20:35:30,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:30,813 INFO L225 Difference]: With dead ends: 1490 [2020-10-26 20:35:30,813 INFO L226 Difference]: Without dead ends: 933 [2020-10-26 20:35:30,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:35:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-10-26 20:35:30,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 905. [2020-10-26 20:35:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-26 20:35:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1215 transitions. [2020-10-26 20:35:30,879 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1215 transitions. Word has length 109 [2020-10-26 20:35:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:30,880 INFO L481 AbstractCegarLoop]: Abstraction has 905 states and 1215 transitions. [2020-10-26 20:35:30,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:35:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1215 transitions. [2020-10-26 20:35:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-26 20:35:30,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:30,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-26 20:35:30,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:35:30,887 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:30,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:30,887 INFO L82 PathProgramCache]: Analyzing trace with hash 408462176, now seen corresponding path program 1 times [2020-10-26 20:35:30,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:30,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539412182] [2020-10-26 20:35:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:30,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:30,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:33,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:33,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:35,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:35,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 20:35:35,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:35:35,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4219 [2020-10-26 20:35:35,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 20:35:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 20:35:35,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:35,296 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:35:35,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:35,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:35,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:35,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:35,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:35:35,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:35,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:35:35,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:35,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:35,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:35,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:35,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:35,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:35,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:35:35,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:35:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:35:35,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:35:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:35,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:35,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:35,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:35:35,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 20:35:35,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:35:35,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:35:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 20:35:35,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539412182] [2020-10-26 20:35:35,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:35,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:35:35,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328319740] [2020-10-26 20:35:35,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:35:35,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:35,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:35:35,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:35,563 INFO L87 Difference]: Start difference. First operand 905 states and 1215 transitions. Second operand 7 states. [2020-10-26 20:35:35,734 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:35:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:36,996 INFO L93 Difference]: Finished difference Result 1476 states and 1995 transitions. [2020-10-26 20:35:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:35:37,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-26 20:35:37,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:37,016 INFO L225 Difference]: With dead ends: 1476 [2020-10-26 20:35:37,016 INFO L226 Difference]: Without dead ends: 1473 [2020-10-26 20:35:37,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:35:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2020-10-26 20:35:37,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1459. [2020-10-26 20:35:37,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2020-10-26 20:35:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1965 transitions. [2020-10-26 20:35:37,102 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1965 transitions. Word has length 110 [2020-10-26 20:35:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:37,103 INFO L481 AbstractCegarLoop]: Abstraction has 1459 states and 1965 transitions. [2020-10-26 20:35:37,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:35:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1965 transitions. [2020-10-26 20:35:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-26 20:35:37,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:37,108 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-26 20:35:37,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:35:37,108 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:37,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:37,109 INFO L82 PathProgramCache]: Analyzing trace with hash -30210008, now seen corresponding path program 1 times [2020-10-26 20:35:37,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:37,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497574316] [2020-10-26 20:35:37,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:37,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:37,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:37,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:38,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:38,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 20:35:38,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:35:38,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1554 [2020-10-26 20:35:38,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:35:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:35:38,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:38,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:38,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:38,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:38,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:38,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:38,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:35:38,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:38,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:38,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:38,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:38,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:38,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:38,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:38,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:38,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:35:38,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:35:38,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:38,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:35:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:38,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:38,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:38,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:35:38,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:38,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 20:35:38,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:35:38,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:35:38,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497574316] [2020-10-26 20:35:38,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:38,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:35:38,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602682287] [2020-10-26 20:35:38,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:35:38,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:38,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:35:38,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:38,988 INFO L87 Difference]: Start difference. First operand 1459 states and 1965 transitions. Second operand 7 states. [2020-10-26 20:35:40,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:40,707 INFO L93 Difference]: Finished difference Result 3015 states and 4086 transitions. [2020-10-26 20:35:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:35:40,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-26 20:35:40,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:40,718 INFO L225 Difference]: With dead ends: 3015 [2020-10-26 20:35:40,718 INFO L226 Difference]: Without dead ends: 1622 [2020-10-26 20:35:40,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:35:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2020-10-26 20:35:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1467. [2020-10-26 20:35:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2020-10-26 20:35:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 1965 transitions. [2020-10-26 20:35:40,789 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 1965 transitions. Word has length 114 [2020-10-26 20:35:40,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:40,790 INFO L481 AbstractCegarLoop]: Abstraction has 1467 states and 1965 transitions. [2020-10-26 20:35:40,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:35:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 1965 transitions. [2020-10-26 20:35:40,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-26 20:35:40,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:40,795 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:40,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:35:40,796 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:40,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:40,796 INFO L82 PathProgramCache]: Analyzing trace with hash -502247865, now seen corresponding path program 1 times [2020-10-26 20:35:40,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:40,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269622714] [2020-10-26 20:35:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:40,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:41,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:42,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:42,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 20:35:42,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:35:42,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1475 [2020-10-26 20:35:42,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:42,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:35:42,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:42,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 20:35:42,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:42,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:42,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:42,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:42,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:35:42,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:42,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:42,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:42,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:42,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:42,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:35:42,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:35:42,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:35:42,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:42,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:35:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:42,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:42,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:42,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:35:42,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:42,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 20:35:42,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:35:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:35:42,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269622714] [2020-10-26 20:35:42,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:42,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:35:42,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471094215] [2020-10-26 20:35:42,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:35:42,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:42,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:35:42,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:35:42,702 INFO L87 Difference]: Start difference. First operand 1467 states and 1965 transitions. Second operand 8 states. [2020-10-26 20:35:42,891 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:35:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:44,949 INFO L93 Difference]: Finished difference Result 3601 states and 4996 transitions. [2020-10-26 20:35:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:35:44,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-26 20:35:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:44,963 INFO L225 Difference]: With dead ends: 3601 [2020-10-26 20:35:44,964 INFO L226 Difference]: Without dead ends: 2200 [2020-10-26 20:35:44,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:35:44,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2020-10-26 20:35:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 2182. [2020-10-26 20:35:45,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2182 states. [2020-10-26 20:35:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2826 transitions. [2020-10-26 20:35:45,048 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2826 transitions. Word has length 117 [2020-10-26 20:35:45,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:45,049 INFO L481 AbstractCegarLoop]: Abstraction has 2182 states and 2826 transitions. [2020-10-26 20:35:45,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:35:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2826 transitions. [2020-10-26 20:35:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-26 20:35:45,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:45,055 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:45,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:35:45,055 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:45,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1892657435, now seen corresponding path program 1 times [2020-10-26 20:35:45,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:45,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503201579] [2020-10-26 20:35:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:45,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:45,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:45,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:47,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:47,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 20:35:47,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:35:47,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2449 [2020-10-26 20:35:47,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 20:35:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 20:35:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:47,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:47,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:47,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:47,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:47,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:47,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:35:47,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:47,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:47,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:47,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:35:47,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:35:47,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:35:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:47,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:35:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:47,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:47,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:47,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:35:47,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:35:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:47,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 20:35:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:47,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:47,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:47,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:35:47,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:47,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 20:35:47,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:35:47,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 29 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-26 20:35:47,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503201579] [2020-10-26 20:35:47,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:47,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:35:47,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972431646] [2020-10-26 20:35:47,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:35:47,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:47,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:35:47,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:35:47,963 INFO L87 Difference]: Start difference. First operand 2182 states and 2826 transitions. Second operand 8 states. [2020-10-26 20:35:48,103 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 20:35:49,405 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:35:49,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:49,953 INFO L93 Difference]: Finished difference Result 4310 states and 5617 transitions. [2020-10-26 20:35:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:35:49,956 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-26 20:35:49,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:49,970 INFO L225 Difference]: With dead ends: 4310 [2020-10-26 20:35:49,970 INFO L226 Difference]: Without dead ends: 2194 [2020-10-26 20:35:49,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:35:49,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2020-10-26 20:35:50,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 2182. [2020-10-26 20:35:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2182 states. [2020-10-26 20:35:50,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2804 transitions. [2020-10-26 20:35:50,053 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2804 transitions. Word has length 125 [2020-10-26 20:35:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:50,053 INFO L481 AbstractCegarLoop]: Abstraction has 2182 states and 2804 transitions. [2020-10-26 20:35:50,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:35:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2804 transitions. [2020-10-26 20:35:50,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-26 20:35:50,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:50,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:50,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:35:50,059 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:50,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:50,060 INFO L82 PathProgramCache]: Analyzing trace with hash -603135995, now seen corresponding path program 1 times [2020-10-26 20:35:50,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:50,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285310419] [2020-10-26 20:35:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:50,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:50,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:51,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:51,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 20:35:51,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:35:51,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1471 [2020-10-26 20:35:51,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:35:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:35:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 20:35:51,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:51,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:51,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:51,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:51,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:51,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:35:51,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:51,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:51,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:51,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:51,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:51,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:51,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:35:51,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:35:51,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:35:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:51,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:51,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:51,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:35:51,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:51,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 20:35:51,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:35:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:51,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:35:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:51,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:51,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:35:51,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:51,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 20:35:51,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:35:51,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 39 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 20:35:51,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285310419] [2020-10-26 20:35:51,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:51,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:35:51,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038861112] [2020-10-26 20:35:51,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:35:51,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:51,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:35:51,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:35:51,961 INFO L87 Difference]: Start difference. First operand 2182 states and 2804 transitions. Second operand 9 states. [2020-10-26 20:35:53,933 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:35:54,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:54,005 INFO L93 Difference]: Finished difference Result 5722 states and 7607 transitions. [2020-10-26 20:35:54,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:35:54,006 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2020-10-26 20:35:54,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:54,027 INFO L225 Difference]: With dead ends: 5722 [2020-10-26 20:35:54,027 INFO L226 Difference]: Without dead ends: 3606 [2020-10-26 20:35:54,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 20:35:54,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2020-10-26 20:35:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 3181. [2020-10-26 20:35:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3181 states. [2020-10-26 20:35:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 4071 transitions. [2020-10-26 20:35:54,140 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 4071 transitions. Word has length 127 [2020-10-26 20:35:54,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:54,141 INFO L481 AbstractCegarLoop]: Abstraction has 3181 states and 4071 transitions. [2020-10-26 20:35:54,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:35:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 4071 transitions. [2020-10-26 20:35:54,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-26 20:35:54,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:54,150 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:54,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:35:54,150 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:54,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:54,151 INFO L82 PathProgramCache]: Analyzing trace with hash 702674205, now seen corresponding path program 1 times [2020-10-26 20:35:54,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:54,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992404949] [2020-10-26 20:35:54,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:54,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:54,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:54,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:55,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:55,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 20:35:55,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:35:55,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1646 [2020-10-26 20:35:55,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:35:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 20:35:55,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:55,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:55,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:55,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:55,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:55,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:55,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:35:55,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:55,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:55,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:56,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:56,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:56,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:35:56,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:35:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:56,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:35:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:56,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:56,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:56,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 20:35:56,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:56,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 20:35:56,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:56,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:56,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:56,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 20:35:56,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:56,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:35:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:56,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:56,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:56,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:35:56,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:56,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:35:56,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:35:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:56,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 58 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 20:35:56,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992404949] [2020-10-26 20:35:56,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:56,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:35:56,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494228490] [2020-10-26 20:35:56,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:35:56,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:56,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:35:56,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:56,177 INFO L87 Difference]: Start difference. First operand 3181 states and 4071 transitions. Second operand 7 states. [2020-10-26 20:35:58,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:58,034 INFO L93 Difference]: Finished difference Result 6993 states and 8937 transitions. [2020-10-26 20:35:58,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:35:58,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-26 20:35:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:58,060 INFO L225 Difference]: With dead ends: 6993 [2020-10-26 20:35:58,060 INFO L226 Difference]: Without dead ends: 3878 [2020-10-26 20:35:58,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:35:58,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2020-10-26 20:35:58,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3870. [2020-10-26 20:35:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3870 states. [2020-10-26 20:35:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 4832 transitions. [2020-10-26 20:35:58,209 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 4832 transitions. Word has length 147 [2020-10-26 20:35:58,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:58,209 INFO L481 AbstractCegarLoop]: Abstraction has 3870 states and 4832 transitions. [2020-10-26 20:35:58,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:35:58,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 4832 transitions. [2020-10-26 20:35:58,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-26 20:35:58,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:58,218 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 20:35:58,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:35:58,219 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:58,219 INFO L82 PathProgramCache]: Analyzing trace with hash 203304670, now seen corresponding path program 1 times [2020-10-26 20:35:58,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:58,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268960492] [2020-10-26 20:35:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:58,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:58,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:58,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:59,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:59,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:01,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 20:36:01,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:36:01,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3022 [2020-10-26 20:36:01,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:36:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 20:36:01,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:01,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:01,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:01,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:01,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:36:01,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:01,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:01,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:01,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:36:01,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:36:01,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:01,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:01,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:01,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:36:01,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:01,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:36:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:01,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:01,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 20:36:01,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:01,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 20:36:01,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 20:36:01,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:01,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 20:36:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:01,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:01,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:36:01,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:01,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:36:01,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:01,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:36:01,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:01,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 57 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 20:36:01,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268960492] [2020-10-26 20:36:01,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:01,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:36:01,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7976085] [2020-10-26 20:36:01,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:01,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:01,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:01,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:01,702 INFO L87 Difference]: Start difference. First operand 3870 states and 4832 transitions. Second operand 7 states. [2020-10-26 20:36:03,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:03,577 INFO L93 Difference]: Finished difference Result 7839 states and 9854 transitions. [2020-10-26 20:36:03,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:36:03,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-26 20:36:03,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:03,599 INFO L225 Difference]: With dead ends: 7839 [2020-10-26 20:36:03,599 INFO L226 Difference]: Without dead ends: 4035 [2020-10-26 20:36:03,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:36:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2020-10-26 20:36:03,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 4019. [2020-10-26 20:36:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4019 states. [2020-10-26 20:36:03,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 4990 transitions. [2020-10-26 20:36:03,722 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 4990 transitions. Word has length 150 [2020-10-26 20:36:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:03,722 INFO L481 AbstractCegarLoop]: Abstraction has 4019 states and 4990 transitions. [2020-10-26 20:36:03,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 4990 transitions. [2020-10-26 20:36:03,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-26 20:36:03,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:03,736 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:03,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:36:03,736 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:03,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:03,737 INFO L82 PathProgramCache]: Analyzing trace with hash 947447866, now seen corresponding path program 1 times [2020-10-26 20:36:03,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:03,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801130973] [2020-10-26 20:36:03,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:03,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:03,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:04,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:04,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 20:36:04,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:36:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-26 20:36:04,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-26 20:36:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:36:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:04,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:04,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:04,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:04,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:04,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:04,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:36:04,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:04,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:04,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:04,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:04,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:04,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:36:04,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:36:04,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:04,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:36:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:04,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:04,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:04,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 20:36:04,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:04,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 20:36:04,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 20:36:04,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 20:36:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:04,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:04,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:36:04,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:04,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 20:36:04,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:04,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:04,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:04,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:36:04,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-26 20:36:05,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801130973] [2020-10-26 20:36:05,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:05,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:36:05,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935511329] [2020-10-26 20:36:05,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:05,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:05,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:05,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:05,003 INFO L87 Difference]: Start difference. First operand 4019 states and 4990 transitions. Second operand 7 states. [2020-10-26 20:36:05,470 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 20:36:07,059 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:36:07,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:07,094 INFO L93 Difference]: Finished difference Result 8935 states and 11205 transitions. [2020-10-26 20:36:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:36:07,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-26 20:36:07,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:07,122 INFO L225 Difference]: With dead ends: 8935 [2020-10-26 20:36:07,122 INFO L226 Difference]: Without dead ends: 4982 [2020-10-26 20:36:07,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:36:07,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4982 states. [2020-10-26 20:36:07,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4982 to 4976. [2020-10-26 20:36:07,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4976 states. [2020-10-26 20:36:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4976 states to 4976 states and 6091 transitions. [2020-10-26 20:36:07,280 INFO L78 Accepts]: Start accepts. Automaton has 4976 states and 6091 transitions. Word has length 180 [2020-10-26 20:36:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:07,280 INFO L481 AbstractCegarLoop]: Abstraction has 4976 states and 6091 transitions. [2020-10-26 20:36:07,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:07,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4976 states and 6091 transitions. [2020-10-26 20:36:07,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-26 20:36:07,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:07,295 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:07,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:36:07,295 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:07,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:07,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1116497177, now seen corresponding path program 1 times [2020-10-26 20:36:07,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:07,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552602708] [2020-10-26 20:36:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:07,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:07,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:07,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:08,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:08,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-26 20:36:08,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:36:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1267 [2020-10-26 20:36:08,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:36:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:36:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-26 20:36:08,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:08,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:08,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:08,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:08,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:08,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:08,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:36:08,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:08,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:08,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:08,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:08,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:08,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:08,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:08,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:08,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:36:08,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:08,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:36:08,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:36:08,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:08,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:36:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:08,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:08,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 20:36:08,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:08,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 20:36:08,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:08,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:08,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:08,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:36:08,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:08,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 20:36:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:08,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:08,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:08,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 20:36:08,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:08,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 20:36:08,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-26 20:36:08,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 12 proven. 101 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 20:36:09,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552602708] [2020-10-26 20:36:09,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:09,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:36:09,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331201254] [2020-10-26 20:36:09,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:36:09,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:09,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:36:09,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:36:09,009 INFO L87 Difference]: Start difference. First operand 4976 states and 6091 transitions. Second operand 6 states. [2020-10-26 20:36:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:10,532 INFO L93 Difference]: Finished difference Result 10629 states and 13112 transitions. [2020-10-26 20:36:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:36:10,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 205 [2020-10-26 20:36:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:10,558 INFO L225 Difference]: With dead ends: 10629 [2020-10-26 20:36:10,558 INFO L226 Difference]: Without dead ends: 5719 [2020-10-26 20:36:10,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:36:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5719 states. [2020-10-26 20:36:10,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5719 to 5421. [2020-10-26 20:36:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5421 states. [2020-10-26 20:36:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5421 states to 5421 states and 6431 transitions. [2020-10-26 20:36:10,695 INFO L78 Accepts]: Start accepts. Automaton has 5421 states and 6431 transitions. Word has length 205 [2020-10-26 20:36:10,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:10,695 INFO L481 AbstractCegarLoop]: Abstraction has 5421 states and 6431 transitions. [2020-10-26 20:36:10,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:36:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5421 states and 6431 transitions. [2020-10-26 20:36:10,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-26 20:36:10,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:10,710 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:36:10,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 20:36:10,710 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:10,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:10,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1214885111, now seen corresponding path program 1 times [2020-10-26 20:36:10,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:10,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039032717] [2020-10-26 20:36:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:10,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:10,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:11,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:11,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-26 20:36:11,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:36:11,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1061 [2020-10-26 20:36:11,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-26 20:36:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 20:36:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:11,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:11,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:11,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:11,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:11,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:36:11,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:11,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:11,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:11,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:11,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:11,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:11,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:36:11,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:11,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:36:11,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 20:36:11,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:12,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:36:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:12,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:12,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:12,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:36:12,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 20:36:12,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 20:36:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:12,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 20:36:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:12,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:12,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:12,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:36:12,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:36:12,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:36:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:12,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-26 20:36:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:12,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:12,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:36:12,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:36:12,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:36:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 156 proven. 26 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-26 20:36:12,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039032717] [2020-10-26 20:36:12,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:12,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:36:12,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401323909] [2020-10-26 20:36:12,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:12,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:12,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:12,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:12,146 INFO L87 Difference]: Start difference. First operand 5421 states and 6431 transitions. Second operand 7 states. [2020-10-26 20:36:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:14,316 INFO L93 Difference]: Finished difference Result 11209 states and 13434 transitions. [2020-10-26 20:36:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:36:14,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-10-26 20:36:14,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:14,337 INFO L225 Difference]: With dead ends: 11209 [2020-10-26 20:36:14,338 INFO L226 Difference]: Without dead ends: 5856 [2020-10-26 20:36:14,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:36:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5856 states. [2020-10-26 20:36:14,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5856 to 5840. [2020-10-26 20:36:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5840 states. [2020-10-26 20:36:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 6875 transitions. [2020-10-26 20:36:14,486 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 6875 transitions. Word has length 211 [2020-10-26 20:36:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:14,487 INFO L481 AbstractCegarLoop]: Abstraction has 5840 states and 6875 transitions. [2020-10-26 20:36:14,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 6875 transitions. [2020-10-26 20:36:14,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-26 20:36:14,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:14,502 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:14,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 20:36:14,502 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:14,503 INFO L82 PathProgramCache]: Analyzing trace with hash 119514988, now seen corresponding path program 1 times [2020-10-26 20:36:14,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:14,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896542152] [2020-10-26 20:36:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:14,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:14,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:15,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:15,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:15,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 20:36:15,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:36:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-10-26 20:36:15,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:15,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:15,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-26 20:36:15,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:36:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:15,792 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:36:15,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:15,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:15,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:15,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:15,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:36:15,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:15,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:15,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:15,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:15,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:15,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:15,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:36:15,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:15,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 20:36:15,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:15,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:15,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:36:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:15,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:15,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:15,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 20:36:15,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:15,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:36:15,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:15,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:15,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 20:36:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:15,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:15,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 20:36:15,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:15,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 20:36:15,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-26 20:36:15,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:15,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 20:36:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:15,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:15,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:15,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:36:15,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:15,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:36:15,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:15,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:15,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:15,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:36:15,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-26 20:36:16,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896542152] [2020-10-26 20:36:16,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:16,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:36:16,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583457488] [2020-10-26 20:36:16,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:16,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:16,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:16,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:16,056 INFO L87 Difference]: Start difference. First operand 5840 states and 6875 transitions. Second operand 7 states. [2020-10-26 20:36:18,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:18,130 INFO L93 Difference]: Finished difference Result 11658 states and 13787 transitions. [2020-10-26 20:36:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:36:18,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-26 20:36:18,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:18,149 INFO L225 Difference]: With dead ends: 11658 [2020-10-26 20:36:18,149 INFO L226 Difference]: Without dead ends: 5584 [2020-10-26 20:36:18,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:36:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5584 states. [2020-10-26 20:36:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5584 to 5538. [2020-10-26 20:36:18,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5538 states. [2020-10-26 20:36:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5538 states to 5538 states and 6110 transitions. [2020-10-26 20:36:18,281 INFO L78 Accepts]: Start accepts. Automaton has 5538 states and 6110 transitions. Word has length 222 [2020-10-26 20:36:18,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:18,281 INFO L481 AbstractCegarLoop]: Abstraction has 5538 states and 6110 transitions. [2020-10-26 20:36:18,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:18,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5538 states and 6110 transitions. [2020-10-26 20:36:18,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-26 20:36:18,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:18,293 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:18,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 20:36:18,294 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:18,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:18,295 INFO L82 PathProgramCache]: Analyzing trace with hash -597400149, now seen corresponding path program 1 times [2020-10-26 20:36:18,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:18,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848882988] [2020-10-26 20:36:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:18,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:19,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:19,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-26 20:36:19,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:19,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-26 20:36:19,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:19,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-26 20:36:19,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 20:36:19,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:19,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:19,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:19,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:19,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:19,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:19,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:36:19,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:19,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:19,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:19,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:19,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:19,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:19,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:19,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:19,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:36:19,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:19,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:36:19,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:19,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:19,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:19,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-26 20:36:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:19,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:19,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:19,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:36:19,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:19,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:36:19,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:19,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:19,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 20:36:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:19,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:19,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:19,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:36:19,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:19,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:36:19,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:19,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:19,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 20:36:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:19,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:19,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:19,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:36:19,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:19,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:36:19,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:19,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:19,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:19,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:36:19,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 137 proven. 4 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 20:36:19,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848882988] [2020-10-26 20:36:19,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:19,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:36:19,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479170198] [2020-10-26 20:36:19,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 20:36:19,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:19,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 20:36:19,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:36:19,600 INFO L87 Difference]: Start difference. First operand 5538 states and 6110 transitions. Second operand 5 states. [2020-10-26 20:36:20,384 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-26 20:36:20,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:20,772 INFO L93 Difference]: Finished difference Result 11107 states and 12262 transitions. [2020-10-26 20:36:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:36:20,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-26 20:36:20,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:20,791 INFO L225 Difference]: With dead ends: 11107 [2020-10-26 20:36:20,791 INFO L226 Difference]: Without dead ends: 5552 [2020-10-26 20:36:20,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:36:20,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2020-10-26 20:36:20,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 5538. [2020-10-26 20:36:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5538 states. [2020-10-26 20:36:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5538 states to 5538 states and 6103 transitions. [2020-10-26 20:36:20,921 INFO L78 Accepts]: Start accepts. Automaton has 5538 states and 6103 transitions. Word has length 233 [2020-10-26 20:36:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:20,922 INFO L481 AbstractCegarLoop]: Abstraction has 5538 states and 6103 transitions. [2020-10-26 20:36:20,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 20:36:20,922 INFO L276 IsEmpty]: Start isEmpty. Operand 5538 states and 6103 transitions. [2020-10-26 20:36:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-26 20:36:20,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:20,935 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:20,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 20:36:20,936 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:20,936 INFO L82 PathProgramCache]: Analyzing trace with hash 531031958, now seen corresponding path program 1 times [2020-10-26 20:36:20,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:20,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075250285] [2020-10-26 20:36:20,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:21,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:21,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:22,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:22,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:22,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-26 20:36:22,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:36:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1782 [2020-10-26 20:36:22,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:36:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-26 20:36:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 20:36:22,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:23,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:23,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:23,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:23,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:23,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:36:23,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:23,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:23,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:23,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:23,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:36:23,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:36:23,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:23,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-26 20:36:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:23,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:23,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:36:23,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:23,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:36:23,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:23,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:23,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:23,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:23,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:23,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 20:36:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:23,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:23,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:23,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:36:23,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:36:23,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:23,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 20:36:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:23,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:23,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:23,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:36:23,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:23,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:36:23,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:36:23,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:23,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-26 20:36:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:23,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:23,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:23,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 20:36:23,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:23,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 20:36:23,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:23,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:23,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:23,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 20:36:23,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 214 proven. 29 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-26 20:36:23,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075250285] [2020-10-26 20:36:23,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:23,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:36:23,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154358671] [2020-10-26 20:36:23,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:36:23,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:23,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:36:23,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:36:23,318 INFO L87 Difference]: Start difference. First operand 5538 states and 6103 transitions. Second operand 6 states. [2020-10-26 20:36:24,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:24,884 INFO L93 Difference]: Finished difference Result 12134 states and 13372 transitions. [2020-10-26 20:36:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:36:24,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 260 [2020-10-26 20:36:24,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:24,914 INFO L225 Difference]: With dead ends: 12134 [2020-10-26 20:36:24,914 INFO L226 Difference]: Without dead ends: 6664 [2020-10-26 20:36:24,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:36:24,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6664 states. [2020-10-26 20:36:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 6507. [2020-10-26 20:36:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6507 states. [2020-10-26 20:36:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6507 states to 6507 states and 7108 transitions. [2020-10-26 20:36:25,062 INFO L78 Accepts]: Start accepts. Automaton has 6507 states and 7108 transitions. Word has length 260 [2020-10-26 20:36:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:25,062 INFO L481 AbstractCegarLoop]: Abstraction has 6507 states and 7108 transitions. [2020-10-26 20:36:25,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:36:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 6507 states and 7108 transitions. [2020-10-26 20:36:25,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-26 20:36:25,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:25,078 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:25,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 20:36:25,079 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:25,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:25,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1503398707, now seen corresponding path program 1 times [2020-10-26 20:36:25,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:25,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464107131] [2020-10-26 20:36:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 20:36:25,144 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-26 20:36:25,144 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 20:36:25,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 20:36:25,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:36:25 BoogieIcfgContainer [2020-10-26 20:36:25,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 20:36:25,233 INFO L168 Benchmark]: Toolchain (without parser) took 84061.84 ms. Allocated memory was 151.0 MB in the beginning and 1.1 GB in the end (delta: 955.3 MB). Free memory was 124.5 MB in the beginning and 541.8 MB in the end (delta: -417.2 MB). Peak memory consumption was 538.6 MB. Max. memory is 8.0 GB. [2020-10-26 20:36:25,234 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:36:25,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.67 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 129.2 MB in the end (delta: -5.1 MB). Peak memory consumption was 28.5 MB. Max. memory is 8.0 GB. [2020-10-26 20:36:25,236 INFO L168 Benchmark]: Boogie Preprocessor took 121.30 ms. Allocated memory is still 151.0 MB. Free memory was 129.2 MB in the beginning and 124.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-26 20:36:25,236 INFO L168 Benchmark]: RCFGBuilder took 1405.82 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 102.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 81.8 MB. Max. memory is 8.0 GB. [2020-10-26 20:36:25,236 INFO L168 Benchmark]: TraceAbstraction took 81816.46 ms. Allocated memory was 151.0 MB in the beginning and 1.1 GB in the end (delta: 955.3 MB). Free memory was 101.5 MB in the beginning and 541.8 MB in the end (delta: -440.3 MB). Peak memory consumption was 514.9 MB. Max. memory is 8.0 GB. [2020-10-26 20:36:25,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 703.67 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 129.2 MB in the end (delta: -5.1 MB). Peak memory consumption was 28.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 121.30 ms. Allocated memory is still 151.0 MB. Free memory was 129.2 MB in the beginning and 124.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1405.82 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 102.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 81.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 81816.46 ms. Allocated memory was 151.0 MB in the beginning and 1.1 GB in the end (delta: 955.3 MB). Free memory was 101.5 MB in the beginning and 541.8 MB in the end (delta: -440.3 MB). Peak memory consumption was 514.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int a= 1; [L10] int d= 4; [L11] int e= 5; [L12] int f= 6; [L13] int c= 3; [L14] int b= 2; [L17] int u = 21; [L18] int v = 22; [L19] int w = 23; [L20] int x = 24; [L21] int y = 25; [L22] int z = 26; [L24] int a17 = 1; [L25] int a7 = 0; [L26] int a20 = 1; [L27] int a8 = 15; [L28] int a12 = 8; [L29] int a16 = 5; [L30] int a21 = 1; [L582] int output = -1; [L585] COND TRUE 1 [L588] int input; [L589] input = __VERIFIER_nondet_int() [L590] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L593] CALL, EXPR calculate_output(input) [L33] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L37] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L45] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L51] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L56] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L64] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L67] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L74] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L82] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L86] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L94] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L99] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L104] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L110] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L116] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L121] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L126] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L131] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L138] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L142] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L146] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L150] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L154] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L162] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L167] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L175] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L180] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L188] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L191] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L196] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L199] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L205] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L210] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L216] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L220] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L225] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L233] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L240] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L247] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L252] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L258] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L263] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L267] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L270] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L275] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L280] COND FALSE !((((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8))) [L288] COND FALSE !(((!(a7==1)&&(!(a17==1)&&(((((input==3)&&(a21==1))&&(a16==4))&&(a8==15))&&(a12==8))))&&!(a20==1))) [L294] COND FALSE !((((((a12==8)&&(((((a17==1)&&!(a20==1))&&(a16==4))||((((a20==1)&&!(a17==1))&&(a16==5))||((!(a17==1)&&(a20==1))&&(a16==6))))&&(input==3)))&&(a8==15))&&(a21==1))&&!(a7==1))) [L301] COND FALSE !((((!(a7==1)&&(((input==5)&&((((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a12==8)))&&(a21==1))&&(a8==15))) [L308] COND FALSE !(((!(a7==1)&&(((a21==1)&&(((a17==1)&&((a12==8)&&(input==2)))&&!(a20==1)))&&(a16==6)))&&(a8==15))) [L314] COND FALSE !(((!(a17==1)&&((a21==1)&&((!(a20==1)&&((a12==8)&&((input==3)&&!(a7==1))))&&(a8==15))))&&(a16==5))) [L318] COND FALSE !((((a16==5)&&(!(a20==1)&&(((((input==6)&&(a21==1))&&(a17==1))&&!(a7==1))&&(a12==8))))&&(a8==15))) [L320] COND FALSE !((!(a7==1)&&((a17==1)&&(((a16==6)&&(!(a20==1)&&(((input==6)&&(a12==8))&&(a21==1))))&&(a8==15))))) [L326] COND FALSE !(((((a21==1)&&((a8==15)&&((a12==8)&&(!(a7==1)&&(!(a17==1)&&(input==2))))))&&(a16==4))&&(a20==1))) [L331] COND FALSE !(((a8==15)&&(((a16==4)&&((a12==8)&&((!(a20==1)&&(!(a7==1)&&(input==1)))&&!(a17==1))))&&(a21==1)))) [L335] COND TRUE ((a21==1)&&(((a12==8)&&((((a17==1)&&((input==3)&&((a16==5)||(a16==6))))&&!(a7==1))&&(a20==1)))&&(a8==15))) [L336] a17 = 0 [L337] a16 = 4 [L338] return 21; [L593] RET, EXPR calculate_output(input) [L593] output = calculate_output(input) [L585] COND TRUE 1 [L588] int input; [L589] input = __VERIFIER_nondet_int() [L590] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L593] CALL, EXPR calculate_output(input) [L33] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L37] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L45] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L51] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L56] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L64] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L67] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L74] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L82] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L86] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L94] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L99] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L104] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L110] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L116] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L121] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L126] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L131] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L138] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L142] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L146] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L150] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L154] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L162] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L167] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L175] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L180] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L188] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L191] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L196] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L199] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L205] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L210] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L216] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L220] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L225] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L233] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L240] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L247] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L252] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L258] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L263] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L267] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L270] COND TRUE (((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4)) [L271] a20 = 0 [L272] a17 = 1 [L273] a16 = 6 [L274] return 21; [L593] RET, EXPR calculate_output(input) [L593] output = calculate_output(input) [L585] COND TRUE 1 [L588] int input; [L589] input = __VERIFIER_nondet_int() [L590] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L593] CALL, EXPR calculate_output(input) [L33] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L37] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L45] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L51] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L56] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L64] COND TRUE (((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6)) [L65] a17 = 0 [L66] return 26; [L593] RET, EXPR calculate_output(input) [L593] output = calculate_output(input) [L585] COND TRUE 1 [L588] int input; [L589] input = __VERIFIER_nondet_int() [L590] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L593] CALL, EXPR calculate_output(input) [L33] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L37] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L45] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L51] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L56] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L64] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L67] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L74] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L82] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L86] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L94] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L99] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L104] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L110] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L116] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L121] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L126] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L131] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L138] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L142] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L146] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L150] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L154] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L162] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L167] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L175] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L180] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L188] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L191] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L196] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L199] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L205] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L210] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L216] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L220] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L225] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L233] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L240] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L247] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L252] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L258] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L263] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L267] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L270] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L275] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L280] COND TRUE (((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8)) [L281] a20 = 1 [L282] a8 = 13 [L283] a16 = 4 [L284] a7 = 0 [L285] a21 = 1 [L286] a17 = 0 [L287] return -1; [L593] RET, EXPR calculate_output(input) [L593] output = calculate_output(input) [L585] COND TRUE 1 [L588] int input; [L589] input = __VERIFIER_nondet_int() [L590] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L593] CALL calculate_output(input) [L33] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L37] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L45] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L51] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L56] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L64] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L67] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L74] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L82] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L86] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L94] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L99] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L104] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L110] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L116] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L121] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L126] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L131] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L138] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L142] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L146] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L150] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L154] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L162] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L167] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L175] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L180] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L188] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L191] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L196] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L199] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L205] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L210] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L216] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L220] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L225] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L233] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L240] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L247] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L252] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L258] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L263] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L267] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L270] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L275] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L280] COND FALSE !((((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8))) [L288] COND FALSE !(((!(a7==1)&&(!(a17==1)&&(((((input==3)&&(a21==1))&&(a16==4))&&(a8==15))&&(a12==8))))&&!(a20==1))) [L294] COND FALSE !((((((a12==8)&&(((((a17==1)&&!(a20==1))&&(a16==4))||((((a20==1)&&!(a17==1))&&(a16==5))||((!(a17==1)&&(a20==1))&&(a16==6))))&&(input==3)))&&(a8==15))&&(a21==1))&&!(a7==1))) [L301] COND FALSE !((((!(a7==1)&&(((input==5)&&((((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a12==8)))&&(a21==1))&&(a8==15))) [L308] COND FALSE !(((!(a7==1)&&(((a21==1)&&(((a17==1)&&((a12==8)&&(input==2)))&&!(a20==1)))&&(a16==6)))&&(a8==15))) [L314] COND FALSE !(((!(a17==1)&&((a21==1)&&((!(a20==1)&&((a12==8)&&((input==3)&&!(a7==1))))&&(a8==15))))&&(a16==5))) [L318] COND FALSE !((((a16==5)&&(!(a20==1)&&(((((input==6)&&(a21==1))&&(a17==1))&&!(a7==1))&&(a12==8))))&&(a8==15))) [L320] COND FALSE !((!(a7==1)&&((a17==1)&&(((a16==6)&&(!(a20==1)&&(((input==6)&&(a12==8))&&(a21==1))))&&(a8==15))))) [L326] COND FALSE !(((((a21==1)&&((a8==15)&&((a12==8)&&(!(a7==1)&&(!(a17==1)&&(input==2))))))&&(a16==4))&&(a20==1))) [L331] COND FALSE !(((a8==15)&&(((a16==4)&&((a12==8)&&((!(a20==1)&&(!(a7==1)&&(input==1)))&&!(a17==1))))&&(a21==1)))) [L335] COND FALSE !(((a21==1)&&(((a12==8)&&((((a17==1)&&((input==3)&&((a16==5)||(a16==6))))&&!(a7==1))&&(a20==1)))&&(a8==15)))) [L339] COND FALSE !((!(a21==1)&&((a20==1)&&(((a12==8)&&((a8==13)&&((((a16==5)&&!(a17==1))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==2))))&&(a7==1))))) [L347] COND FALSE !(((a7==1)&&((a12==8)&&((((a20==1)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||((a16==4)&&!(a17==1))))&&(input==4)))&&(a8==13))&&!(a21==1))))) [L355] COND FALSE !(((a21==1)&&((((!(a7==1)&&((a8==15)&&(!(a20==1)&&(input==4))))&&(a17==1))&&(a16==5))&&(a12==8)))) [L357] COND FALSE !((((!(a7==1)&&((!(a20==1)&&((a21==1)&&((input==3)&&(a17==1))))&&(a8==15)))&&(a12==8))&&(a16==5))) [L363] COND FALSE !(((((!(a17==1)&&(!(a20==1)&&((a8==15)&&((input==1)&&(a16==5)))))&&(a12==8))&&(a21==1))&&!(a7==1))) [L365] COND FALSE !(((((a21==1)&&((a8==15)&&(((a16==5)&&((a12==8)&&(input==1)))&&(a17==1))))&&!(a7==1))&&!(a20==1))) [L367] COND FALSE !(((!(a21==1)&&((a20==1)&&((((a8==13)&&((a7==1)&&(input==5)))&&(a17==1))&&(a12==8))))&&(a16==5))) [L374] COND FALSE !((((!(a7==1)&&((a21==1)&&((((input==6)&&(a20==1))&&(a8==15))&&!(a17==1))))&&(a12==8))&&(a16==4))) [L379] COND FALSE !(((((a20==1)&&(((!(a21==1)&&((a7==1)&&(input==1)))&&(a8==13))&&(a17==1)))&&(a12==8))&&(a16==5))) [L384] COND FALSE !(((a12==8)&&((input==5)&&((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==15))&&(a16==6))&&(a21==1))||(!(a21==1)&&((a16==4)&&(((a20==1)&&((a7==1)&&(a17==1)))&&(a8==13)))))))) [L393] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L396] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L399] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==15))&&(a12==8))&&(a16==4))&&(a21==1))) [L402] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==6))&&(a21==1))) [L405] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L408] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==15))&&(a12==8))&&(a16==5))&&(a21==1))) [L411] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==5))&&(a21==1))) [L414] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L417] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==4))&&(a21==1))) [L420] COND FALSE !(((((((!(a17==1)&&(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==5))&&(a21==1))) [L423] COND TRUE ((((((!(a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==4))&&(a21==1)) [L424] CALL reach_error() [L4] __assert_fail("0", "Problem01_label38.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 81.6s, OverallIterations: 18, TraceHistogramMax: 6, AutomataDifference: 34.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 445 SDtfs, 7056 SDslu, 656 SDs, 0 SdLazy, 13967 SolverSat, 1873 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 153 SyntacticMatches, 7 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6507occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 17 MinimizatonAttempts, 1240 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 42.9s InterpolantComputationTime, 2871 NumberOfCodeBlocks, 2871 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 2585 ConstructedInterpolants, 0 QuantifiedInterpolants, 1963396 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 1 PerfectInterpolantSequences, 1570/1808 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...