/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:22:22,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:22:22,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:22:22,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:22:22,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:22:22,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:22:22,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:22:22,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:22:22,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:22:22,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:22:22,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:22:22,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:22:22,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:22:22,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:22:22,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:22:22,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:22:22,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:22:22,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:22:22,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:22:22,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:22:22,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:22:22,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:22:22,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:22:22,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:22:22,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:22:22,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:22:22,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:22:22,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:22:22,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:22:22,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:22:22,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:22:22,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:22:22,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:22:22,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:22:22,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:22:22,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:22:22,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:22:22,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:22:22,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:22:22,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:22:22,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:22:22,634 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:22:22,660 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:22:22,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:22:22,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:22:22,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:22:22,662 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:22:22,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:22:22,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:22:22,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:22:22,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:22:22,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:22:22,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:22:22,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:22:22,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:22:22,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:22:22,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:22:22,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:22:22,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:22:22,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:22:22,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:22:22,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:22:22,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:22:22,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:22:22,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:22:22,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:22:22,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:22:22,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:22:22,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:22:22,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:22:22,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:22:22,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:22:23,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:22:23,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:22:23,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:22:23,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:22:23,093 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:22:23,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label11.c [2020-10-26 23:22:23,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe00898be/8d8a45646d9349258b69074a250b00dc/FLAG09ac2bab8 [2020-10-26 23:22:23,997 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:22:24,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label11.c [2020-10-26 23:22:24,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe00898be/8d8a45646d9349258b69074a250b00dc/FLAG09ac2bab8 [2020-10-26 23:22:24,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe00898be/8d8a45646d9349258b69074a250b00dc [2020-10-26 23:22:24,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:22:24,259 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:22:24,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:22:24,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:22:24,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:22:24,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:22:24" (1/1) ... [2020-10-26 23:22:24,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34350f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:24, skipping insertion in model container [2020-10-26 23:22:24,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:22:24" (1/1) ... [2020-10-26 23:22:24,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:22:24,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:22:24,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:22:24,989 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:22:25,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:22:25,183 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:22:25,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:25 WrapperNode [2020-10-26 23:22:25,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:22:25,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:22:25,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:22:25,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:22:25,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:25" (1/1) ... [2020-10-26 23:22:25,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:25" (1/1) ... [2020-10-26 23:22:25,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:25" (1/1) ... [2020-10-26 23:22:25,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:25" (1/1) ... [2020-10-26 23:22:25,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:25" (1/1) ... [2020-10-26 23:22:25,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:25" (1/1) ... [2020-10-26 23:22:25,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:25" (1/1) ... [2020-10-26 23:22:25,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:22:25,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:22:25,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:22:25,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:22:25,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:22:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:22:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:22:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:22:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:22:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:22:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:22:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:22:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:22:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:22:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:22:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:22:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:22:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:22:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:22:27,287 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:22:27,287 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:22:27,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:22:27 BoogieIcfgContainer [2020-10-26 23:22:27,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:22:27,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:22:27,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:22:27,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:22:27,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:22:24" (1/3) ... [2020-10-26 23:22:27,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6462199e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:22:27, skipping insertion in model container [2020-10-26 23:22:27,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:25" (2/3) ... [2020-10-26 23:22:27,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6462199e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:22:27, skipping insertion in model container [2020-10-26 23:22:27,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:22:27" (3/3) ... [2020-10-26 23:22:27,299 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label11.c [2020-10-26 23:22:27,312 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:22:27,318 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:22:27,336 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:22:27,368 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:22:27,368 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:22:27,368 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:22:27,368 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:22:27,368 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:22:27,369 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:22:27,369 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:22:27,369 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:22:27,393 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:22:27,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-26 23:22:27,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:27,400 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] [2020-10-26 23:22:27,400 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:27,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:27,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1641840664, now seen corresponding path program 1 times [2020-10-26 23:22:27,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:27,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243104640] [2020-10-26 23:22:27,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:27,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:28,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:28,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-26 23:22:28,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:28,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-26 23:22:28,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-26 23:22:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:22:28,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:28,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:28,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:28,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:22:28,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:28,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:22:28,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243104640] [2020-10-26 23:22:28,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:22:28,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:22:28,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744827532] [2020-10-26 23:22:28,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:22:28,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:28,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:22:28,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:22:28,430 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-26 23:22:31,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:31,645 INFO L93 Difference]: Finished difference Result 891 states and 1619 transitions. [2020-10-26 23:22:31,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:22:31,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-26 23:22:31,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:31,684 INFO L225 Difference]: With dead ends: 891 [2020-10-26 23:22:31,685 INFO L226 Difference]: Without dead ends: 565 [2020-10-26 23:22:31,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-26 23:22:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 559. [2020-10-26 23:22:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-26 23:22:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 907 transitions. [2020-10-26 23:22:31,840 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 907 transitions. Word has length 28 [2020-10-26 23:22:31,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:31,841 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 907 transitions. [2020-10-26 23:22:31,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:22:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 907 transitions. [2020-10-26 23:22:31,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-26 23:22:31,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:31,849 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:31,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:22:31,849 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:31,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:31,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1660919916, now seen corresponding path program 1 times [2020-10-26 23:22:31,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:31,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422549599] [2020-10-26 23:22:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:32,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:32,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:32,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-26 23:22:32,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:32,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-26 23:22:32,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:22:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:22:32,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:32,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:32,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:32,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:22:32,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:33,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:33,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:33,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:33,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:22:33,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:33,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 23:22:33,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:33,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:33,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:33,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:22:33,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:22:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:22:33,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422549599] [2020-10-26 23:22:33,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:22:33,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:22:33,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154863180] [2020-10-26 23:22:33,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:33,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:33,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:33,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:33,284 INFO L87 Difference]: Start difference. First operand 559 states and 907 transitions. Second operand 7 states. [2020-10-26 23:22:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:35,977 INFO L93 Difference]: Finished difference Result 1506 states and 2474 transitions. [2020-10-26 23:22:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:22:35,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-26 23:22:35,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:35,986 INFO L225 Difference]: With dead ends: 1506 [2020-10-26 23:22:35,987 INFO L226 Difference]: Without dead ends: 953 [2020-10-26 23:22:35,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:22:35,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-10-26 23:22:36,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 563. [2020-10-26 23:22:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-26 23:22:36,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 833 transitions. [2020-10-26 23:22:36,042 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 833 transitions. Word has length 97 [2020-10-26 23:22:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:36,043 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 833 transitions. [2020-10-26 23:22:36,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:36,043 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 833 transitions. [2020-10-26 23:22:36,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-26 23:22:36,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:36,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:36,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:22:36,046 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:36,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:36,047 INFO L82 PathProgramCache]: Analyzing trace with hash 348227468, now seen corresponding path program 1 times [2020-10-26 23:22:36,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:36,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908765562] [2020-10-26 23:22:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:36,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:36,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:37,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:37,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:22:37,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:37,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-10-26 23:22:37,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:22:37,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:37,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:37,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:37,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:37,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:37,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:22:37,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:37,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:37,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:37,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:37,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:37,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-26 23:22:37,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:22:37,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:22:37,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908765562] [2020-10-26 23:22:37,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:22:37,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:22:37,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596233032] [2020-10-26 23:22:37,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:37,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:37,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:37,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:37,764 INFO L87 Difference]: Start difference. First operand 563 states and 833 transitions. Second operand 7 states. [2020-10-26 23:22:40,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:40,484 INFO L93 Difference]: Finished difference Result 1506 states and 2309 transitions. [2020-10-26 23:22:40,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:22:40,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-26 23:22:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:40,492 INFO L225 Difference]: With dead ends: 1506 [2020-10-26 23:22:40,492 INFO L226 Difference]: Without dead ends: 1131 [2020-10-26 23:22:40,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:22:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2020-10-26 23:22:40,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 937. [2020-10-26 23:22:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-10-26 23:22:40,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1268 transitions. [2020-10-26 23:22:40,540 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1268 transitions. Word has length 101 [2020-10-26 23:22:40,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:40,541 INFO L481 AbstractCegarLoop]: Abstraction has 937 states and 1268 transitions. [2020-10-26 23:22:40,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1268 transitions. [2020-10-26 23:22:40,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-26 23:22:40,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:40,544 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:40,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:22:40,545 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:40,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:40,545 INFO L82 PathProgramCache]: Analyzing trace with hash 519080832, now seen corresponding path program 1 times [2020-10-26 23:22:40,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:40,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571605185] [2020-10-26 23:22:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:40,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:41,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:41,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:41,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-26 23:22:41,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:22:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:22:41,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:41,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:41,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:41,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:41,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:41,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:22:41,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:41,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:41,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:41,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:41,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:41,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:41,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:41,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:41,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-26 23:22:41,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:41,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:22:41,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:22:41,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:22:41,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571605185] [2020-10-26 23:22:41,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:22:41,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:22:41,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323923511] [2020-10-26 23:22:41,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:41,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:41,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:41,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:41,603 INFO L87 Difference]: Start difference. First operand 937 states and 1268 transitions. Second operand 7 states. [2020-10-26 23:22:44,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:44,490 INFO L93 Difference]: Finished difference Result 2502 states and 3580 transitions. [2020-10-26 23:22:44,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:22:44,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-26 23:22:44,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:44,504 INFO L225 Difference]: With dead ends: 2502 [2020-10-26 23:22:44,504 INFO L226 Difference]: Without dead ends: 1571 [2020-10-26 23:22:44,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:22:44,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2020-10-26 23:22:44,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1499. [2020-10-26 23:22:44,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1499 states. [2020-10-26 23:22:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 1932 transitions. [2020-10-26 23:22:44,601 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 1932 transitions. Word has length 106 [2020-10-26 23:22:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:44,601 INFO L481 AbstractCegarLoop]: Abstraction has 1499 states and 1932 transitions. [2020-10-26 23:22:44,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 1932 transitions. [2020-10-26 23:22:44,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-26 23:22:44,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:44,606 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:44,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:22:44,606 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:44,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:44,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1084910592, now seen corresponding path program 1 times [2020-10-26 23:22:44,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:44,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775915768] [2020-10-26 23:22:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:44,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:44,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:45,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:45,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 23:22:45,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:45,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1202 [2020-10-26 23:22:45,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:22:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:22:45,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:45,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:45,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:45,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:45,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:45,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:22:45,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:45,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:45,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:46,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:46,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:46,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:22:46,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:22:46,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:22:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:46,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:22:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:46,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:46,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:46,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:46,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:22:46,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:46,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:46,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:46,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:22:46,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:22:46,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775915768] [2020-10-26 23:22:46,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:46,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:22:46,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870121035] [2020-10-26 23:22:46,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:46,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:46,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:46,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:46,436 INFO L87 Difference]: Start difference. First operand 1499 states and 1932 transitions. Second operand 7 states. [2020-10-26 23:22:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:49,568 INFO L93 Difference]: Finished difference Result 2656 states and 3646 transitions. [2020-10-26 23:22:49,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:22:49,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-26 23:22:49,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:49,576 INFO L225 Difference]: With dead ends: 2656 [2020-10-26 23:22:49,577 INFO L226 Difference]: Without dead ends: 1157 [2020-10-26 23:22:49,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 23:22:49,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2020-10-26 23:22:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 941. [2020-10-26 23:22:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 941 states. [2020-10-26 23:22:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1262 transitions. [2020-10-26 23:22:49,620 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1262 transitions. Word has length 185 [2020-10-26 23:22:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:49,621 INFO L481 AbstractCegarLoop]: Abstraction has 941 states and 1262 transitions. [2020-10-26 23:22:49,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:49,621 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1262 transitions. [2020-10-26 23:22:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-26 23:22:49,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:49,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:49,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:22:49,626 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:49,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:49,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1793343408, now seen corresponding path program 1 times [2020-10-26 23:22:49,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:49,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264888419] [2020-10-26 23:22:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:52,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:52,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:22:52,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:52,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3048 [2020-10-26 23:22:52,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:52,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:52,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:52,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:22:52,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:52,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:52,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:52,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:52,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:52,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:22:52,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:52,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:22:52,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:53,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:53,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:53,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 23:22:53,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:22:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:53,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:22:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:53,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:53,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:53,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:22:53,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:22:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:22:54,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264888419] [2020-10-26 23:22:54,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:54,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:22:54,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349465035] [2020-10-26 23:22:54,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:22:54,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:54,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:22:54,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:22:54,208 INFO L87 Difference]: Start difference. First operand 941 states and 1262 transitions. Second operand 8 states. [2020-10-26 23:22:58,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:58,658 INFO L93 Difference]: Finished difference Result 2644 states and 3782 transitions. [2020-10-26 23:22:58,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:22:58,660 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-10-26 23:22:58,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:58,672 INFO L225 Difference]: With dead ends: 2644 [2020-10-26 23:22:58,673 INFO L226 Difference]: Without dead ends: 1891 [2020-10-26 23:22:58,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-26 23:22:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2020-10-26 23:22:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1883. [2020-10-26 23:22:58,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2020-10-26 23:22:58,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2526 transitions. [2020-10-26 23:22:58,738 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2526 transitions. Word has length 210 [2020-10-26 23:22:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:58,739 INFO L481 AbstractCegarLoop]: Abstraction has 1883 states and 2526 transitions. [2020-10-26 23:22:58,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:22:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2526 transitions. [2020-10-26 23:22:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-26 23:22:58,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:58,745 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:58,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:22:58,745 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:58,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:58,746 INFO L82 PathProgramCache]: Analyzing trace with hash -255705848, now seen corresponding path program 1 times [2020-10-26 23:22:58,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:58,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080528707] [2020-10-26 23:22:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:58,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:58,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:58,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:00,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:01,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:03,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:03,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-26 23:23:03,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:23:03,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:23:03,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:23:03,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:23:03,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:23:03,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:23:03,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:03,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:03,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:03,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:03,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:03,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:23:03,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:23:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:03,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:03,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:04,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:04,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:23:04,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:04,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:23:04,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:04,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:04,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:04,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:23:04,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:04,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:23:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:04,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:04,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:04,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:23:04,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:23:04,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:23:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:04,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-26 23:23:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:04,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:04,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:04,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:04,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:04,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:23:04,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:23:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 65 proven. 214 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 23:23:04,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080528707] [2020-10-26 23:23:04,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:04,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:23:04,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156352126] [2020-10-26 23:23:04,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:23:04,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:04,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:23:04,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:23:04,735 INFO L87 Difference]: Start difference. First operand 1883 states and 2526 transitions. Second operand 8 states. [2020-10-26 23:23:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:07,963 INFO L93 Difference]: Finished difference Result 4362 states and 6116 transitions. [2020-10-26 23:23:07,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:23:07,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 268 [2020-10-26 23:23:07,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:07,983 INFO L225 Difference]: With dead ends: 4362 [2020-10-26 23:23:07,983 INFO L226 Difference]: Without dead ends: 2649 [2020-10-26 23:23:07,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:23:07,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2020-10-26 23:23:08,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2437. [2020-10-26 23:23:08,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-10-26 23:23:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 2903 transitions. [2020-10-26 23:23:08,080 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 2903 transitions. Word has length 268 [2020-10-26 23:23:08,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:08,081 INFO L481 AbstractCegarLoop]: Abstraction has 2437 states and 2903 transitions. [2020-10-26 23:23:08,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:23:08,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 2903 transitions. [2020-10-26 23:23:08,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-26 23:23:08,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:08,087 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:08,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:23:08,087 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:08,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:08,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1203625720, now seen corresponding path program 1 times [2020-10-26 23:23:08,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:08,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425853188] [2020-10-26 23:23:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:08,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:09,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:09,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-26 23:23:09,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1256 [2020-10-26 23:23:09,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:23:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:23:09,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:09,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:09,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:09,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:23:09,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:09,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:09,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:09,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:09,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:09,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:23:09,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:09,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:09,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:09,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:09,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:09,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:09,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:09,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:09,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:09,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:09,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:23:09,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:23:09,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:09,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:09,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:09,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:09,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:09,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:23:09,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:23:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-26 23:23:10,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425853188] [2020-10-26 23:23:10,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:10,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:10,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582908356] [2020-10-26 23:23:10,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:10,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:10,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:10,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:10,132 INFO L87 Difference]: Start difference. First operand 2437 states and 2903 transitions. Second operand 7 states. [2020-10-26 23:23:12,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:12,100 INFO L93 Difference]: Finished difference Result 4688 states and 5646 transitions. [2020-10-26 23:23:12,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:23:12,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 320 [2020-10-26 23:23:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:12,121 INFO L225 Difference]: With dead ends: 4688 [2020-10-26 23:23:12,121 INFO L226 Difference]: Without dead ends: 2623 [2020-10-26 23:23:12,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:23:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2020-10-26 23:23:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 2621. [2020-10-26 23:23:12,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2621 states. [2020-10-26 23:23:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3106 transitions. [2020-10-26 23:23:12,208 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3106 transitions. Word has length 320 [2020-10-26 23:23:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:12,209 INFO L481 AbstractCegarLoop]: Abstraction has 2621 states and 3106 transitions. [2020-10-26 23:23:12,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:12,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3106 transitions. [2020-10-26 23:23:12,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-26 23:23:12,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:12,219 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:12,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:23:12,219 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:12,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:12,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1825065040, now seen corresponding path program 2 times [2020-10-26 23:23:12,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:12,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748132894] [2020-10-26 23:23:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:12,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:13,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:17,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:17,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-26 23:23:17,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:23:17,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-26 23:23:17,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:23:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:23:17,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:17,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:17,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:17,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:17,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:17,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:23:17,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:17,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:17,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:17,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:17,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:17,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:17,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:17,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:17,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:17,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:17,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:23:17,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:17,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:17,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:17,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:17,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:17,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:17,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:17,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:23:17,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:23:17,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:17,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:17,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:17,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:17,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:17,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:17,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 23:23:17,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:23:17,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:23:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:18,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:18,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:18,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:18,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:18,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:23:18,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:18,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:18,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:23:18,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:18,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 306 proven. 72 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-26 23:23:18,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748132894] [2020-10-26 23:23:18,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:18,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:18,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729101564] [2020-10-26 23:23:18,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:18,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:18,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:18,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:18,312 INFO L87 Difference]: Start difference. First operand 2621 states and 3106 transitions. Second operand 7 states. [2020-10-26 23:23:21,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:21,723 INFO L93 Difference]: Finished difference Result 6002 states and 7525 transitions. [2020-10-26 23:23:21,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:21,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 430 [2020-10-26 23:23:21,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:21,748 INFO L225 Difference]: With dead ends: 6002 [2020-10-26 23:23:21,748 INFO L226 Difference]: Without dead ends: 3753 [2020-10-26 23:23:21,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2020-10-26 23:23:21,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 3741. [2020-10-26 23:23:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3741 states. [2020-10-26 23:23:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 4618 transitions. [2020-10-26 23:23:21,874 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 4618 transitions. Word has length 430 [2020-10-26 23:23:21,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:21,875 INFO L481 AbstractCegarLoop]: Abstraction has 3741 states and 4618 transitions. [2020-10-26 23:23:21,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:21,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 4618 transitions. [2020-10-26 23:23:21,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-26 23:23:21,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:21,884 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:21,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:23:21,885 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:21,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:21,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1925490236, now seen corresponding path program 1 times [2020-10-26 23:23:21,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:21,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608994812] [2020-10-26 23:23:21,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:22,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:22,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:22,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:26,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:26,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-26 23:23:26,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:23:26,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 23:23:26,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:23:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:23:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-26 23:23:26,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:27,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:27,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:27,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:27,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:27,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:23:27,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:27,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:27,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:27,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:27,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:27,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:27,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:27,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:23:27,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:27,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:27,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:27,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:27,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:27,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:27,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:23:27,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:23:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:27,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:27,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:27,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:27,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:27,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:27,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 23:23:27,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:27,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:27,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:23:27,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:27,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:27,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:27,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:27,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:27,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:27,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:23:27,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:23:27,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 440 proven. 6 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-26 23:23:27,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608994812] [2020-10-26 23:23:27,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:27,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:27,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832548487] [2020-10-26 23:23:27,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:27,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:27,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:27,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:27,807 INFO L87 Difference]: Start difference. First operand 3741 states and 4618 transitions. Second operand 7 states. [2020-10-26 23:23:31,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:31,001 INFO L93 Difference]: Finished difference Result 7312 states and 9147 transitions. [2020-10-26 23:23:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:23:31,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 437 [2020-10-26 23:23:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:31,023 INFO L225 Difference]: With dead ends: 7312 [2020-10-26 23:23:31,023 INFO L226 Difference]: Without dead ends: 3943 [2020-10-26 23:23:31,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:31,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2020-10-26 23:23:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3923. [2020-10-26 23:23:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3923 states. [2020-10-26 23:23:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 4788 transitions. [2020-10-26 23:23:31,154 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 4788 transitions. Word has length 437 [2020-10-26 23:23:31,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:31,155 INFO L481 AbstractCegarLoop]: Abstraction has 3923 states and 4788 transitions. [2020-10-26 23:23:31,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:31,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 4788 transitions. [2020-10-26 23:23:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2020-10-26 23:23:31,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:31,172 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:31,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:23:31,172 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:31,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:31,173 INFO L82 PathProgramCache]: Analyzing trace with hash -2136855972, now seen corresponding path program 1 times [2020-10-26 23:23:31,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:31,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855224967] [2020-10-26 23:23:31,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:31,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:31,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:33,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:33,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 616 [2020-10-26 23:23:33,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:33,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2038 [2020-10-26 23:23:33,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:23:33,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:23:33,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:33,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:33,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:33,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:33,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:23:33,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:33,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:33,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:33,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:33,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:33,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:33,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:23:33,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:33,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:33,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:33,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:33,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:33,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:33,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:33,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:23:33,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:33,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:33,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:33,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:33,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:33,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:33,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:33,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:33,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:33,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:23:33,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:33,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:33,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:33,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:33,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:33,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:33,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:23:33,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:23:33,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:33,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:23:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:33,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:34,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:34,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:34,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:23:34,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:23:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 395 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:23:34,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855224967] [2020-10-26 23:23:34,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:34,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:34,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669617741] [2020-10-26 23:23:34,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:34,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:34,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:34,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:34,316 INFO L87 Difference]: Start difference. First operand 3923 states and 4788 transitions. Second operand 7 states. [2020-10-26 23:23:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:36,659 INFO L93 Difference]: Finished difference Result 7662 states and 9431 transitions. [2020-10-26 23:23:36,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:23:36,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 596 [2020-10-26 23:23:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:36,679 INFO L225 Difference]: With dead ends: 7662 [2020-10-26 23:23:36,680 INFO L226 Difference]: Without dead ends: 4111 [2020-10-26 23:23:36,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:23:36,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2020-10-26 23:23:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 4105. [2020-10-26 23:23:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4105 states. [2020-10-26 23:23:36,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4105 states to 4105 states and 4981 transitions. [2020-10-26 23:23:36,809 INFO L78 Accepts]: Start accepts. Automaton has 4105 states and 4981 transitions. Word has length 596 [2020-10-26 23:23:36,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:36,810 INFO L481 AbstractCegarLoop]: Abstraction has 4105 states and 4981 transitions. [2020-10-26 23:23:36,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4105 states and 4981 transitions. [2020-10-26 23:23:36,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2020-10-26 23:23:36,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:36,829 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:36,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:23:36,829 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:36,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:36,830 INFO L82 PathProgramCache]: Analyzing trace with hash 861996032, now seen corresponding path program 1 times [2020-10-26 23:23:36,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:36,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363641233] [2020-10-26 23:23:36,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:37,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:37,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:38,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:41,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:41,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 634 [2020-10-26 23:23:41,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:23:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 23:23:41,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:23:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:23:41,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:42,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:42,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:42,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:42,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:42,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:23:42,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:42,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:42,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:42,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:42,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:42,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:23:42,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:42,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:42,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:42,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:42,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:42,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:42,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:42,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:23:42,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:42,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:42,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:42,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:42,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:42,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:42,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:42,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:23:42,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:23:42,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:42,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:42,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:42,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:42,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:23:42,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:42,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-26 23:23:42,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:42,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:42,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:23:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:23:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:42,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:42,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:42,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:42,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:23:42,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:23:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:42,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 449 proven. 72 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-26 23:23:43,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363641233] [2020-10-26 23:23:43,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:43,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:43,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394008356] [2020-10-26 23:23:43,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:43,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:43,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:43,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:43,066 INFO L87 Difference]: Start difference. First operand 4105 states and 4981 transitions. Second operand 7 states. [2020-10-26 23:23:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:45,541 INFO L93 Difference]: Finished difference Result 8954 states and 11141 transitions. [2020-10-26 23:23:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:23:45,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 614 [2020-10-26 23:23:45,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:45,571 INFO L225 Difference]: With dead ends: 8954 [2020-10-26 23:23:45,571 INFO L226 Difference]: Without dead ends: 5221 [2020-10-26 23:23:45,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:23:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5221 states. [2020-10-26 23:23:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5221 to 5029. [2020-10-26 23:23:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5029 states. [2020-10-26 23:23:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5029 states to 5029 states and 6078 transitions. [2020-10-26 23:23:45,712 INFO L78 Accepts]: Start accepts. Automaton has 5029 states and 6078 transitions. Word has length 614 [2020-10-26 23:23:45,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:45,714 INFO L481 AbstractCegarLoop]: Abstraction has 5029 states and 6078 transitions. [2020-10-26 23:23:45,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5029 states and 6078 transitions. [2020-10-26 23:23:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2020-10-26 23:23:45,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:45,722 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:45,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:23:45,722 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:45,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:45,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1498227560, now seen corresponding path program 1 times [2020-10-26 23:23:45,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:45,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242320903] [2020-10-26 23:23:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:45,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:48,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:48,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 657 [2020-10-26 23:23:48,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2755 [2020-10-26 23:23:48,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:23:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:23:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:48,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:48,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:48,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:48,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:23:48,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:48,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:48,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:48,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:48,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:23:48,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:48,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:48,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:48,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:48,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:48,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:48,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:23:48,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:48,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:48,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:48,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:48,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:48,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:48,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:48,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:48,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:48,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:23:48,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:49,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:49,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:49,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:49,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:23:49,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:49,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:49,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:49,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:23:49,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:49,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:23:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:49,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:49,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:49,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:23:49,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:49,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:23:49,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:49,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:49,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:49,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:23:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 550 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:23:49,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242320903] [2020-10-26 23:23:49,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:49,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:49,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523386308] [2020-10-26 23:23:49,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:49,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:49,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:49,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:49,459 INFO L87 Difference]: Start difference. First operand 5029 states and 6078 transitions. Second operand 7 states. [2020-10-26 23:23:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:51,918 INFO L93 Difference]: Finished difference Result 11547 states and 14426 transitions. [2020-10-26 23:23:51,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:51,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 637 [2020-10-26 23:23:51,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:51,951 INFO L225 Difference]: With dead ends: 11547 [2020-10-26 23:23:51,951 INFO L226 Difference]: Without dead ends: 6890 [2020-10-26 23:23:51,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:51,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6890 states. [2020-10-26 23:23:52,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6890 to 6881. [2020-10-26 23:23:52,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6881 states. [2020-10-26 23:23:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 8471 transitions. [2020-10-26 23:23:52,120 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 8471 transitions. Word has length 637 [2020-10-26 23:23:52,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:52,121 INFO L481 AbstractCegarLoop]: Abstraction has 6881 states and 8471 transitions. [2020-10-26 23:23:52,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:52,121 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 8471 transitions. [2020-10-26 23:23:52,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2020-10-26 23:23:52,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:52,189 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:52,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:23:52,189 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:52,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:52,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1004396384, now seen corresponding path program 1 times [2020-10-26 23:23:52,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:52,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080107737] [2020-10-26 23:23:52,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:52,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 791 [2020-10-26 23:23:54,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2160 [2020-10-26 23:23:54,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:23:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:23:54,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:54,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:23:54,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:54,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:23:54,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:54,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:23:54,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:54,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:23:54,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:54,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:23:54,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:23:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:55,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:55,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:55,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:23:55,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:55,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:23:55,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:23:55,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:55,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:23:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:55,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:55,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:55,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:55,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:23:55,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:23:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1644 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-26 23:23:55,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080107737] [2020-10-26 23:23:55,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:55,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:23:55,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679073790] [2020-10-26 23:23:55,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:23:55,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:55,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:23:55,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:23:55,733 INFO L87 Difference]: Start difference. First operand 6881 states and 8471 transitions. Second operand 8 states. [2020-10-26 23:23:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:59,310 INFO L93 Difference]: Finished difference Result 14134 states and 17569 transitions. [2020-10-26 23:23:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:23:59,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 769 [2020-10-26 23:23:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:59,347 INFO L225 Difference]: With dead ends: 14134 [2020-10-26 23:23:59,348 INFO L226 Difference]: Without dead ends: 7625 [2020-10-26 23:23:59,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:59,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2020-10-26 23:23:59,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 7439. [2020-10-26 23:23:59,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7439 states. [2020-10-26 23:23:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7439 states to 7439 states and 9108 transitions. [2020-10-26 23:23:59,740 INFO L78 Accepts]: Start accepts. Automaton has 7439 states and 9108 transitions. Word has length 769 [2020-10-26 23:23:59,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:59,741 INFO L481 AbstractCegarLoop]: Abstraction has 7439 states and 9108 transitions. [2020-10-26 23:23:59,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:23:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 7439 states and 9108 transitions. [2020-10-26 23:23:59,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2020-10-26 23:23:59,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:59,753 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:59,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:23:59,753 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:59,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:59,757 INFO L82 PathProgramCache]: Analyzing trace with hash 191832832, now seen corresponding path program 1 times [2020-10-26 23:23:59,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:59,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465669912] [2020-10-26 23:23:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:00,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:04,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:04,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 800 [2020-10-26 23:24:04,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:24:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-26 23:24:04,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:24:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:24:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:05,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:05,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:05,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:24:05,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:05,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:24:05,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:05,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:24:05,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:05,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:24:05,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:05,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:24:05,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:24:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:05,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:24:05,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:24:05,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-26 23:24:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:05,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:05,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:05,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:24:05,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:05,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:05,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:24:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:05,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 570 proven. 72 refuted. 0 times theorem prover too weak. 1329 trivial. 0 not checked. [2020-10-26 23:24:05,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465669912] [2020-10-26 23:24:05,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:05,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:05,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589946376] [2020-10-26 23:24:05,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:05,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:05,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:05,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:05,978 INFO L87 Difference]: Start difference. First operand 7439 states and 9108 transitions. Second operand 7 states. [2020-10-26 23:24:08,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:08,659 INFO L93 Difference]: Finished difference Result 16191 states and 20080 transitions. [2020-10-26 23:24:08,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:24:08,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 776 [2020-10-26 23:24:08,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:08,695 INFO L225 Difference]: With dead ends: 16191 [2020-10-26 23:24:08,695 INFO L226 Difference]: Without dead ends: 9124 [2020-10-26 23:24:08,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:24:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9124 states. [2020-10-26 23:24:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9124 to 9095. [2020-10-26 23:24:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9095 states. [2020-10-26 23:24:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9095 states to 9095 states and 11154 transitions. [2020-10-26 23:24:09,029 INFO L78 Accepts]: Start accepts. Automaton has 9095 states and 11154 transitions. Word has length 776 [2020-10-26 23:24:09,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:09,030 INFO L481 AbstractCegarLoop]: Abstraction has 9095 states and 11154 transitions. [2020-10-26 23:24:09,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:09,030 INFO L276 IsEmpty]: Start isEmpty. Operand 9095 states and 11154 transitions. [2020-10-26 23:24:09,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2020-10-26 23:24:09,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:09,041 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:09,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:24:09,041 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:09,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:09,042 INFO L82 PathProgramCache]: Analyzing trace with hash 147903892, now seen corresponding path program 1 times [2020-10-26 23:24:09,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:09,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940283324] [2020-10-26 23:24:09,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:09,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:09,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:10,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:10,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:11,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-26 23:24:14,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:24:14,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 23:24:14,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:24:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:24:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:24:14,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:14,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:14,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:24:14,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:14,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:14,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:14,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:14,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:14,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:24:14,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:14,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:14,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:14,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:14,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:14,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:14,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:14,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 23:24:14,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:24:14,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:14,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:24:14,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:24:14,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:24:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:14,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:14,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:14,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:14,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 23:24:14,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:24:14,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:14,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:24:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:14,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:15,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:15,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:15,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:15,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:24:15,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:24:15,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:15,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-10-26 23:24:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:15,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:15,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:24:15,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:15,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:24:15,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:24:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:15,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 934 proven. 142 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2020-10-26 23:24:15,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940283324] [2020-10-26 23:24:15,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:15,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:15,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077815977] [2020-10-26 23:24:15,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:15,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:15,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:15,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:15,402 INFO L87 Difference]: Start difference. First operand 9095 states and 11154 transitions. Second operand 7 states. [2020-10-26 23:24:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:18,231 INFO L93 Difference]: Finished difference Result 17835 states and 21957 transitions. [2020-10-26 23:24:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:24:18,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 794 [2020-10-26 23:24:18,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:18,263 INFO L225 Difference]: With dead ends: 17835 [2020-10-26 23:24:18,263 INFO L226 Difference]: Without dead ends: 9112 [2020-10-26 23:24:18,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:24:18,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9112 states. [2020-10-26 23:24:18,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9112 to 9095. [2020-10-26 23:24:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9095 states. [2020-10-26 23:24:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9095 states to 9095 states and 11152 transitions. [2020-10-26 23:24:18,485 INFO L78 Accepts]: Start accepts. Automaton has 9095 states and 11152 transitions. Word has length 794 [2020-10-26 23:24:18,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:18,486 INFO L481 AbstractCegarLoop]: Abstraction has 9095 states and 11152 transitions. [2020-10-26 23:24:18,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:18,486 INFO L276 IsEmpty]: Start isEmpty. Operand 9095 states and 11152 transitions. [2020-10-26 23:24:18,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-10-26 23:24:18,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:18,496 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:18,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:24:18,497 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:18,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:18,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1491195100, now seen corresponding path program 1 times [2020-10-26 23:24:18,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:18,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428170606] [2020-10-26 23:24:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:18,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:20,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:20,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 836 [2020-10-26 23:24:20,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:20,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1930 [2020-10-26 23:24:20,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:20,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:20,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 806 [2020-10-26 23:24:20,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-26 23:24:20,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:20,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:20,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:20,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:20,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:20,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:20,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:24:20,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:20,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:20,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:20,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:20,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:20,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:20,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:24:20,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:20,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:20,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:20,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:20,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:20,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:20,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:24:20,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:20,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:20,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:20,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:20,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:20,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:24:20,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:20,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:20,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:20,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:20,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:20,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:20,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:20,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:20,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:24:20,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:20,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:20,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:20,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:20,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:20,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:20,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:20,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:24:20,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:20,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:20,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:20,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:20,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:21,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:21,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:21,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:21,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:21,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:21,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:24:21,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:21,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:21,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:21,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:21,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:21,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:24:21,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:21,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:24:21,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:21,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:21,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:24:21,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 151 proven. 7 refuted. 0 times theorem prover too weak. 1954 trivial. 0 not checked. [2020-10-26 23:24:21,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428170606] [2020-10-26 23:24:21,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:21,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:24:21,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027953292] [2020-10-26 23:24:21,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:24:21,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:21,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:24:21,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:24:21,531 INFO L87 Difference]: Start difference. First operand 9095 states and 11152 transitions. Second operand 5 states. [2020-10-26 23:24:23,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:23,608 INFO L93 Difference]: Finished difference Result 17998 states and 22294 transitions. [2020-10-26 23:24:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:24:23,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 812 [2020-10-26 23:24:23,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:23,640 INFO L225 Difference]: With dead ends: 17998 [2020-10-26 23:24:23,641 INFO L226 Difference]: Without dead ends: 9275 [2020-10-26 23:24:23,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:24:23,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9275 states. [2020-10-26 23:24:23,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9275 to 9271. [2020-10-26 23:24:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9271 states. [2020-10-26 23:24:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9271 states to 9271 states and 11372 transitions. [2020-10-26 23:24:24,040 INFO L78 Accepts]: Start accepts. Automaton has 9271 states and 11372 transitions. Word has length 812 [2020-10-26 23:24:24,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:24,041 INFO L481 AbstractCegarLoop]: Abstraction has 9271 states and 11372 transitions. [2020-10-26 23:24:24,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:24:24,041 INFO L276 IsEmpty]: Start isEmpty. Operand 9271 states and 11372 transitions. [2020-10-26 23:24:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2020-10-26 23:24:24,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:24,058 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:24,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:24:24,058 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:24,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:24,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1817466396, now seen corresponding path program 1 times [2020-10-26 23:24:24,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:24,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898500460] [2020-10-26 23:24:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:24,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:24,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:29,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 937 [2020-10-26 23:24:29,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:24:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-26 23:24:29,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:24:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:24:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:24:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:29,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:29,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:29,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:29,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:29,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:29,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:29,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:29,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:29,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:24:29,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:29,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:29,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:29,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:24:29,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:29,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:29,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:29,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:29,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:29,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:29,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:29,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:24:29,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:24:29,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:29,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:29,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:29,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:24:29,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:29,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:29,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:29,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:24:29,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:29,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:29,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:29,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:30,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:30,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:30,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:24:30,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:24:30,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:30,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:30,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:30,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:30,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:24:30,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 23:24:30,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:24:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:24:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:30,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:24:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:30,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:30,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:24:30,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:30,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-26 23:24:30,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:24:30,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2784 backedges. 1320 proven. 98 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:24:31,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898500460] [2020-10-26 23:24:31,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:31,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:24:31,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777157298] [2020-10-26 23:24:31,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:24:31,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:31,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:24:31,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:24:31,045 INFO L87 Difference]: Start difference. First operand 9271 states and 11372 transitions. Second operand 10 states. [2020-10-26 23:24:35,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:35,006 INFO L93 Difference]: Finished difference Result 19547 states and 24307 transitions. [2020-10-26 23:24:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 23:24:35,008 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 911 [2020-10-26 23:24:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:35,043 INFO L225 Difference]: With dead ends: 19547 [2020-10-26 23:24:35,043 INFO L226 Difference]: Without dead ends: 10613 [2020-10-26 23:24:35,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2020-10-26 23:24:35,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10613 states. [2020-10-26 23:24:35,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10613 to 10569. [2020-10-26 23:24:35,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-10-26 23:24:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 13129 transitions. [2020-10-26 23:24:35,301 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 13129 transitions. Word has length 911 [2020-10-26 23:24:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:35,302 INFO L481 AbstractCegarLoop]: Abstraction has 10569 states and 13129 transitions. [2020-10-26 23:24:35,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:24:35,302 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 13129 transitions. [2020-10-26 23:24:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2020-10-26 23:24:35,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:35,317 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:35,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:24:35,318 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:35,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:35,318 INFO L82 PathProgramCache]: Analyzing trace with hash 291900652, now seen corresponding path program 1 times [2020-10-26 23:24:35,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:35,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578426902] [2020-10-26 23:24:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:35,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:35,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 970 [2020-10-26 23:24:40,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:24:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-26 23:24:40,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:24:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:24:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:24:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:40,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:40,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:40,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:40,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:40,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:24:40,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:40,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:24:40,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:40,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:24:40,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:40,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:24:40,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:41,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:41,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:41,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:41,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:24:41,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:24:41,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:41,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:41,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:41,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:41,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:24:41,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:41,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-26 23:24:41,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:41,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:24:41,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:41,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:24:41,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:41,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:24:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:41,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:41,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:24:41,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:41,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 23:24:41,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:24:41,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 1356 proven. 98 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:24:43,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578426902] [2020-10-26 23:24:43,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:43,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:24:43,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248596744] [2020-10-26 23:24:43,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:24:43,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:43,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:24:43,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:24:43,004 INFO L87 Difference]: Start difference. First operand 10569 states and 13129 transitions. Second operand 10 states. [2020-10-26 23:24:46,111 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-26 23:24:47,138 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-26 23:24:47,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:47,425 INFO L93 Difference]: Finished difference Result 20835 states and 25988 transitions. [2020-10-26 23:24:47,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:24:47,426 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 944 [2020-10-26 23:24:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:47,459 INFO L225 Difference]: With dead ends: 20835 [2020-10-26 23:24:47,460 INFO L226 Difference]: Without dead ends: 10605 [2020-10-26 23:24:47,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:24:47,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10605 states. [2020-10-26 23:24:47,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10605 to 10569. [2020-10-26 23:24:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-10-26 23:24:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 13122 transitions. [2020-10-26 23:24:47,716 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 13122 transitions. Word has length 944 [2020-10-26 23:24:47,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:47,717 INFO L481 AbstractCegarLoop]: Abstraction has 10569 states and 13122 transitions. [2020-10-26 23:24:47,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:24:47,717 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 13122 transitions. [2020-10-26 23:24:47,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2020-10-26 23:24:47,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:47,732 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:47,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:24:47,733 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:47,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:47,733 INFO L82 PathProgramCache]: Analyzing trace with hash 57382184, now seen corresponding path program 1 times [2020-10-26 23:24:47,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:47,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786241181] [2020-10-26 23:24:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:47,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:48,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:51,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:52,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:52,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:52,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-26 23:24:52,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:24:52,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 23:24:52,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:24:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:24:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:24:52,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:53,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:53,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:53,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:53,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:53,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:53,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:53,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:53,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:53,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:53,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:53,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:53,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:53,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:53,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:53,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:53,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:24:53,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:53,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:53,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:53,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:53,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:53,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:53,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:53,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:53,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:53,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:53,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:53,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:53,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:53,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:53,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:53,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:53,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:53,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:53,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:53,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:24:53,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:53,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:53,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:53,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:53,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:53,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:53,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:53,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:53,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:24:53,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:53,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:53,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:53,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:24:53,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:53,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:53,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:53,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:53,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:24:53,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-26 23:24:53,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:24:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:24:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:53,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:24:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:54,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:54,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:24:54,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:54,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-26 23:24:54,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:24:54,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 1357 proven. 98 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:24:55,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786241181] [2020-10-26 23:24:55,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:55,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:24:55,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355874503] [2020-10-26 23:24:55,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:24:55,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:55,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:24:55,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:24:55,141 INFO L87 Difference]: Start difference. First operand 10569 states and 13122 transitions. Second operand 11 states. [2020-10-26 23:24:59,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:59,545 INFO L93 Difference]: Finished difference Result 21424 states and 29397 transitions. [2020-10-26 23:24:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 23:24:59,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 945 [2020-10-26 23:24:59,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:59,602 INFO L225 Difference]: With dead ends: 21424 [2020-10-26 23:24:59,602 INFO L226 Difference]: Without dead ends: 11063 [2020-10-26 23:24:59,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2020-10-26 23:24:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11063 states. [2020-10-26 23:24:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11063 to 10567. [2020-10-26 23:24:59,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10567 states. [2020-10-26 23:24:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 12916 transitions. [2020-10-26 23:24:59,967 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 12916 transitions. Word has length 945 [2020-10-26 23:24:59,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:59,968 INFO L481 AbstractCegarLoop]: Abstraction has 10567 states and 12916 transitions. [2020-10-26 23:24:59,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:24:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 12916 transitions. [2020-10-26 23:24:59,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2020-10-26 23:24:59,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:59,986 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:59,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:24:59,986 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:59,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:59,987 INFO L82 PathProgramCache]: Analyzing trace with hash -311220948, now seen corresponding path program 1 times [2020-10-26 23:24:59,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:59,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327731028] [2020-10-26 23:24:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:00,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:00,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:03,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:03,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1002 [2020-10-26 23:25:03,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3566 [2020-10-26 23:25:03,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:25:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:25:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 283 [2020-10-26 23:25:03,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:03,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:03,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:03,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:03,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:03,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:25:03,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:03,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:03,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:03,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:03,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:03,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:03,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:03,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:25:03,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:04,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:04,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:04,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:04,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:04,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:04,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:04,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:04,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:04,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:04,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:04,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:04,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:04,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:04,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:04,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:04,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:04,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:04,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:04,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:25:04,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:04,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:04,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:04,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:04,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:04,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 23:25:04,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:04,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:04,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:04,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:04,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:25:04,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:25:04,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:25:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:04,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:25:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:04,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:04,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:04,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:04,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:04,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:25:04,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:25:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:25:04,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:04,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:25:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:04,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:04,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:04,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:25:04,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:25:04,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:25:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 1386 proven. 6 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-10-26 23:25:05,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327731028] [2020-10-26 23:25:05,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:05,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:25:05,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846871236] [2020-10-26 23:25:05,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:25:05,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:05,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:25:05,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:25:05,298 INFO L87 Difference]: Start difference. First operand 10567 states and 12916 transitions. Second operand 9 states. [2020-10-26 23:25:09,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:09,609 INFO L93 Difference]: Finished difference Result 21506 states and 26407 transitions. [2020-10-26 23:25:09,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:25:09,609 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 976 [2020-10-26 23:25:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:09,638 INFO L225 Difference]: With dead ends: 21506 [2020-10-26 23:25:09,638 INFO L226 Difference]: Without dead ends: 11311 [2020-10-26 23:25:09,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:25:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11311 states. [2020-10-26 23:25:09,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11311 to 11123. [2020-10-26 23:25:09,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11123 states. [2020-10-26 23:25:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11123 states to 11123 states and 13559 transitions. [2020-10-26 23:25:09,917 INFO L78 Accepts]: Start accepts. Automaton has 11123 states and 13559 transitions. Word has length 976 [2020-10-26 23:25:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:09,918 INFO L481 AbstractCegarLoop]: Abstraction has 11123 states and 13559 transitions. [2020-10-26 23:25:09,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:25:09,919 INFO L276 IsEmpty]: Start isEmpty. Operand 11123 states and 13559 transitions. [2020-10-26 23:25:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-26 23:25:09,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:09,940 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:09,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:25:09,940 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:09,941 INFO L82 PathProgramCache]: Analyzing trace with hash 155157968, now seen corresponding path program 1 times [2020-10-26 23:25:09,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:09,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60979004] [2020-10-26 23:25:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:10,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:15,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:15,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1056 [2020-10-26 23:25:15,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:15,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-26 23:25:15,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:25:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:25:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:25:15,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:15,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:15,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:15,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:15,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:15,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:25:15,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:15,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:15,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:15,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:15,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:25:15,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:15,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:15,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:15,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:15,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:15,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:15,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:15,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:15,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:15,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:15,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:15,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:15,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:15,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:15,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:15,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:15,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:15,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:15,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:15,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:25:15,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:15,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:25:15,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:15,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:15,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:15,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:15,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:15,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:25:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:15,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:15,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:15,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:25:15,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:25:15,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:15,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:15,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:15,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:15,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:15,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:25:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:15,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:16,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:16,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:25:16,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 23:25:16,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:25:16,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:16,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:25:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:16,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:16,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:25:16,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:16,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:25:16,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:25:16,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:16,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:25:16,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:16,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:25:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:16,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:16,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:16,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:25:16,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:16,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 23:25:16,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:25:16,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 1217 proven. 50 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2020-10-26 23:25:17,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60979004] [2020-10-26 23:25:17,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:17,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:25:17,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317447454] [2020-10-26 23:25:17,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:25:17,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:17,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:25:17,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:25:17,398 INFO L87 Difference]: Start difference. First operand 11123 states and 13559 transitions. Second operand 9 states. [2020-10-26 23:25:17,579 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-26 23:25:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:20,770 INFO L93 Difference]: Finished difference Result 22167 states and 27122 transitions. [2020-10-26 23:25:20,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:25:20,773 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1030 [2020-10-26 23:25:20,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:20,806 INFO L225 Difference]: With dead ends: 22167 [2020-10-26 23:25:20,806 INFO L226 Difference]: Without dead ends: 11313 [2020-10-26 23:25:20,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-26 23:25:20,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11313 states. [2020-10-26 23:25:21,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11313 to 11305. [2020-10-26 23:25:21,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11305 states. [2020-10-26 23:25:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11305 states to 11305 states and 13747 transitions. [2020-10-26 23:25:21,096 INFO L78 Accepts]: Start accepts. Automaton has 11305 states and 13747 transitions. Word has length 1030 [2020-10-26 23:25:21,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:21,097 INFO L481 AbstractCegarLoop]: Abstraction has 11305 states and 13747 transitions. [2020-10-26 23:25:21,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:25:21,098 INFO L276 IsEmpty]: Start isEmpty. Operand 11305 states and 13747 transitions. [2020-10-26 23:25:21,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1050 [2020-10-26 23:25:21,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:21,119 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:21,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:25:21,119 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:21,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:21,121 INFO L82 PathProgramCache]: Analyzing trace with hash -420846112, now seen corresponding path program 1 times [2020-10-26 23:25:21,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:21,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499105182] [2020-10-26 23:25:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:21,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1077 [2020-10-26 23:25:26,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:25:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-26 23:25:26,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:25:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:25:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:26,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:26,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:26,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:26,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:25:26,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:26,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:26,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:26,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:26,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:26,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:25:26,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:26,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:26,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:26,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:26,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:25:26,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:26,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:26,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:26,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:26,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:25:26,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:26,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:26,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:26,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:26,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:26,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:26,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:26,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:25:26,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:26,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:26,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:26,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:26,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:26,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:25:26,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:26,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:26,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:25:26,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:26,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:25:26,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:26,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:26,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:26,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:25:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:26,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:26,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:26,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:26,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:25:26,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:25:26,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:27,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:25:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:27,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:27,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:25:27,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:27,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:25:27,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:27,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:27,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:25:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-26 23:25:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:27,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:27,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:27,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:25:27,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:25:27,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-26 23:25:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3454 backedges. 728 proven. 72 refuted. 0 times theorem prover too weak. 2654 trivial. 0 not checked. [2020-10-26 23:25:27,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499105182] [2020-10-26 23:25:27,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:27,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:25:27,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721647101] [2020-10-26 23:25:27,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:25:27,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:27,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:25:27,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:25:27,832 INFO L87 Difference]: Start difference. First operand 11305 states and 13747 transitions. Second operand 7 states. [2020-10-26 23:25:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:30,242 INFO L93 Difference]: Finished difference Result 22442 states and 27357 transitions. [2020-10-26 23:25:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:25:30,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1049 [2020-10-26 23:25:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:30,265 INFO L225 Difference]: With dead ends: 22442 [2020-10-26 23:25:30,266 INFO L226 Difference]: Without dead ends: 11509 [2020-10-26 23:25:30,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:25:30,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11509 states. [2020-10-26 23:25:30,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11509 to 11503. [2020-10-26 23:25:30,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11503 states. [2020-10-26 23:25:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11503 states to 11503 states and 13528 transitions. [2020-10-26 23:25:30,505 INFO L78 Accepts]: Start accepts. Automaton has 11503 states and 13528 transitions. Word has length 1049 [2020-10-26 23:25:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:30,507 INFO L481 AbstractCegarLoop]: Abstraction has 11503 states and 13528 transitions. [2020-10-26 23:25:30,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:25:30,507 INFO L276 IsEmpty]: Start isEmpty. Operand 11503 states and 13528 transitions. [2020-10-26 23:25:30,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2020-10-26 23:25:30,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:30,532 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:30,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 23:25:30,532 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:30,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1464387272, now seen corresponding path program 1 times [2020-10-26 23:25:30,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:30,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307210010] [2020-10-26 23:25:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:30,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:30,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:32,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:33,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:34,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:35,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:35,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1080 [2020-10-26 23:25:35,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:25:35,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-26 23:25:35,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:35,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:35,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 864 [2020-10-26 23:25:35,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:25:35,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:35,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:35,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:35,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:35,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:35,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:35,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 23:25:35,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:36,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:25:36,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:36,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:36,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:36,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:36,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:25:36,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:25:36,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:25:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:25:36,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:25:36,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:25:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 23:25:36,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:25:36,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:25:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-10-26 23:25:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:25:36,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:25:36,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:25:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 935 [2020-10-26 23:25:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:36,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:36,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:25:36,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:36,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:25:36,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-26 23:25:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:36,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3162 backedges. 689 proven. 82 refuted. 0 times theorem prover too weak. 2391 trivial. 0 not checked. [2020-10-26 23:25:37,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307210010] [2020-10-26 23:25:37,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:37,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:25:37,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586949497] [2020-10-26 23:25:37,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:25:37,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:37,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:25:37,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:25:37,613 INFO L87 Difference]: Start difference. First operand 11503 states and 13528 transitions. Second operand 7 states. [2020-10-26 23:25:39,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:39,447 INFO L93 Difference]: Finished difference Result 22707 states and 26798 transitions. [2020-10-26 23:25:39,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:25:39,448 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1054 [2020-10-26 23:25:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:39,469 INFO L225 Difference]: With dead ends: 22707 [2020-10-26 23:25:39,470 INFO L226 Difference]: Without dead ends: 11531 [2020-10-26 23:25:39,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:25:39,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11531 states. [2020-10-26 23:25:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11531 to 11489. [2020-10-26 23:25:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11489 states. [2020-10-26 23:25:39,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11489 states to 11489 states and 13333 transitions. [2020-10-26 23:25:39,708 INFO L78 Accepts]: Start accepts. Automaton has 11489 states and 13333 transitions. Word has length 1054 [2020-10-26 23:25:39,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:39,708 INFO L481 AbstractCegarLoop]: Abstraction has 11489 states and 13333 transitions. [2020-10-26 23:25:39,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:25:39,709 INFO L276 IsEmpty]: Start isEmpty. Operand 11489 states and 13333 transitions. [2020-10-26 23:25:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1137 [2020-10-26 23:25:39,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:39,726 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:39,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 23:25:39,726 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:39,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:39,727 INFO L82 PathProgramCache]: Analyzing trace with hash 527341604, now seen corresponding path program 1 times [2020-10-26 23:25:39,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:39,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644663446] [2020-10-26 23:25:39,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:39,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:44,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:44,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1162 [2020-10-26 23:25:44,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:44,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 23:25:44,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:44,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:25:44,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:25:44,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:25:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:45,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:25:45,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:45,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:25:45,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:45,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:45,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:45,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:45,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:45,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:25:45,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:25:45,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:25:45,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:25:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:25:45,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:25:45,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:45,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:25:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:45,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:25:45,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:45,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:25:45,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:45,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:45,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:45,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:25:45,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:45,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:25:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:45,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking...