/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/Problem16_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:57:04,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:57:04,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:57:04,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:57:04,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:57:04,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:57:04,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:57:04,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:57:04,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:57:04,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:57:04,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:57:04,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:57:04,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:57:04,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:57:04,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:57:04,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:57:04,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:57:04,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:57:04,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:57:04,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:57:04,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:57:04,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:57:04,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:57:04,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:57:04,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:57:04,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:57:04,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:57:04,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:57:04,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:57:04,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:57:04,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:57:04,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:57:04,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:57:04,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:57:04,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:57:04,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:57:04,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:57:04,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:57:04,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:57:04,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:57:04,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:57:04,328 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 23:57:04,358 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:57:04,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:57:04,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:57:04,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:57:04,362 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:57:04,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:57:04,363 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:57:04,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:57:04,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:57:04,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:57:04,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:57:04,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:57:04,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:57:04,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:57:04,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:57:04,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:57:04,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:57:04,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:57:04,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:57:04,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:57:04,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:57:04,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:57:04,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:57:04,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:57:04,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:57:04,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:57:04,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:57:04,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:57:04,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:57:04,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:57:04,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:57:04,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:57:04,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:57:04,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:57:04,821 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:57:04,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label28.c [2020-10-26 23:57:04,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cacc5ac98/a5495d1e4e464948894e6e4acd5c3201/FLAG72be97382 [2020-10-26 23:57:05,929 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:57:05,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label28.c [2020-10-26 23:57:05,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cacc5ac98/a5495d1e4e464948894e6e4acd5c3201/FLAG72be97382 [2020-10-26 23:57:06,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cacc5ac98/a5495d1e4e464948894e6e4acd5c3201 [2020-10-26 23:57:06,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:57:06,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:57:06,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:57:06,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:57:06,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:57:06,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:57:06" (1/1) ... [2020-10-26 23:57:06,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f1aa9c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:06, skipping insertion in model container [2020-10-26 23:57:06,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:57:06" (1/1) ... [2020-10-26 23:57:06,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:57:06,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:57:07,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:57:07,042 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:57:07,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:57:07,394 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:57:07,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:07 WrapperNode [2020-10-26 23:57:07,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:57:07,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:57:07,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:57:07,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:57:07,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:07" (1/1) ... [2020-10-26 23:57:07,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:07" (1/1) ... [2020-10-26 23:57:07,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:07" (1/1) ... [2020-10-26 23:57:07,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:07" (1/1) ... [2020-10-26 23:57:07,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:07" (1/1) ... [2020-10-26 23:57:07,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:07" (1/1) ... [2020-10-26 23:57:07,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:07" (1/1) ... [2020-10-26 23:57:07,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:57:07,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:57:07,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:57:07,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:57:07,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:07" (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 23:57:07,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:57:07,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:57:07,684 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:57:07,684 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:57:07,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:57:07,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:57:07,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:57:07,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:57:07,686 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:57:07,686 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:57:07,687 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:57:07,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:57:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:57:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:57:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:57:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:57:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:57:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:57:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:57:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:57:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:57:10,295 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:57:10,295 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:57:10,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:57:10 BoogieIcfgContainer [2020-10-26 23:57:10,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:57:10,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:57:10,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:57:10,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:57:10,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:57:06" (1/3) ... [2020-10-26 23:57:10,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27409060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:57:10, skipping insertion in model container [2020-10-26 23:57:10,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:07" (2/3) ... [2020-10-26 23:57:10,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27409060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:57:10, skipping insertion in model container [2020-10-26 23:57:10,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:57:10" (3/3) ... [2020-10-26 23:57:10,307 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label28.c [2020-10-26 23:57:10,321 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:57:10,327 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:57:10,341 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:57:10,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:57:10,392 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:57:10,392 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:57:10,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:57:10,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:57:10,393 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:57:10,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:57:10,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:57:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:57:10,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-26 23:57:10,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:10,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:10,437 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash 780759676, now seen corresponding path program 1 times [2020-10-26 23:57:10,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:10,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293263591] [2020-10-26 23:57:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:10,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-26 23:57:11,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:11,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-26 23:57:11,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:57:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:57:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:57:11,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:11,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:11,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:57:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:57:11,679 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 23:57:11,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293263591] [2020-10-26 23:57:11,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:57:11,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:57:11,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425886477] [2020-10-26 23:57:11,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:57:11,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:11,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:57:11,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:57:11,711 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-26 23:57:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:19,365 INFO L93 Difference]: Finished difference Result 1520 states and 2854 transitions. [2020-10-26 23:57:19,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:57:19,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-26 23:57:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:19,396 INFO L225 Difference]: With dead ends: 1520 [2020-10-26 23:57:19,396 INFO L226 Difference]: Without dead ends: 1039 [2020-10-26 23:57:19,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-26 23:57:19,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-26 23:57:19,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-26 23:57:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1643 transitions. [2020-10-26 23:57:19,537 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1643 transitions. Word has length 73 [2020-10-26 23:57:19,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:19,538 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1643 transitions. [2020-10-26 23:57:19,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:57:19,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1643 transitions. [2020-10-26 23:57:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-26 23:57:19,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:19,555 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:19,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:57:19,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:19,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:19,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1746677476, now seen corresponding path program 1 times [2020-10-26 23:57:19,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:19,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691607151] [2020-10-26 23:57:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:19,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:19,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:24,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:24,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-26 23:57:24,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:57:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 23:57:24,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:57:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:57:24,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:57:24,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:24,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:24,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:24,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:24,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:24,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:57:24,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:24,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:24,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:24,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:24,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:24,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:24,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:24,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:57:24,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:24,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 23:57:24,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:57:24,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:57:25,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 23:57:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:25,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:25,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:57:25,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:25,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:57:25,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:25,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:25,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:57:25,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:25,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 130 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:57:25,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691607151] [2020-10-26 23:57:25,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:25,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:25,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629763939] [2020-10-26 23:57:25,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:25,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:25,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:25,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:25,344 INFO L87 Difference]: Start difference. First operand 1032 states and 1643 transitions. Second operand 7 states. [2020-10-26 23:57:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:31,192 INFO L93 Difference]: Finished difference Result 2466 states and 3928 transitions. [2020-10-26 23:57:31,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:31,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-26 23:57:31,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:31,207 INFO L225 Difference]: With dead ends: 2466 [2020-10-26 23:57:31,207 INFO L226 Difference]: Without dead ends: 1440 [2020-10-26 23:57:31,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 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 23:57:31,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2020-10-26 23:57:31,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1386. [2020-10-26 23:57:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1386 states. [2020-10-26 23:57:31,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 2068 transitions. [2020-10-26 23:57:31,292 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 2068 transitions. Word has length 255 [2020-10-26 23:57:31,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:31,295 INFO L481 AbstractCegarLoop]: Abstraction has 1386 states and 2068 transitions. [2020-10-26 23:57:31,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:31,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 2068 transitions. [2020-10-26 23:57:31,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-26 23:57:31,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:31,302 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:31,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:57:31,303 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:31,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:31,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1614041332, now seen corresponding path program 1 times [2020-10-26 23:57:31,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:31,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57810028] [2020-10-26 23:57:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:31,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:31,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:31,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:32,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:36,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-26 23:57:36,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:57:36,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 23:57:36,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:36,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:57:36,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:36,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-26 23:57:36,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:36,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:36,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:36,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:36,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:57:36,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:36,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:36,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:36,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:57:36,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 23:57:36,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:57:36,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:57:36,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 23:57:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:36,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:36,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:57:36,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:36,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 23:57:36,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:36,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 23:57:36,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-26 23:57:37,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57810028] [2020-10-26 23:57:37,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:37,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:37,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818358809] [2020-10-26 23:57:37,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:57:37,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:37,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:57:37,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:57:37,232 INFO L87 Difference]: Start difference. First operand 1386 states and 2068 transitions. Second operand 8 states. [2020-10-26 23:57:43,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:43,701 INFO L93 Difference]: Finished difference Result 3490 states and 5415 transitions. [2020-10-26 23:57:43,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:57:43,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 256 [2020-10-26 23:57:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:43,727 INFO L225 Difference]: With dead ends: 3490 [2020-10-26 23:57:43,728 INFO L226 Difference]: Without dead ends: 2110 [2020-10-26 23:57:43,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:57:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2020-10-26 23:57:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1733. [2020-10-26 23:57:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-10-26 23:57:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2541 transitions. [2020-10-26 23:57:43,809 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2541 transitions. Word has length 256 [2020-10-26 23:57:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:43,811 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2541 transitions. [2020-10-26 23:57:43,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:57:43,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2541 transitions. [2020-10-26 23:57:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-26 23:57:43,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:43,820 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:43,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:57:43,821 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:43,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:43,821 INFO L82 PathProgramCache]: Analyzing trace with hash -333758867, now seen corresponding path program 1 times [2020-10-26 23:57:43,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:43,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319737457] [2020-10-26 23:57:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:43,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:43,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:45,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:48,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:48,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-26 23:57:48,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:57:48,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:57:48,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:57:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:57:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:49,055 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:57:49,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:49,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:49,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:49,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:49,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:57:49,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:49,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:49,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:49,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:49,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:49,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:49,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:57:49,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:49,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:57:49,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:57:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:49,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 23:57:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:49,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:49,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:49,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:49,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:57:49,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:57:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:49,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:49,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-26 23:57:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:49,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:49,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:57:49,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:49,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:57:49,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:57:49,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:49,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 195 proven. 142 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-26 23:57:49,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319737457] [2020-10-26 23:57:49,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:49,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:57:49,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353395698] [2020-10-26 23:57:49,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:57:49,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:49,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:57:49,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:57:49,686 INFO L87 Difference]: Start difference. First operand 1733 states and 2541 transitions. Second operand 8 states. [2020-10-26 23:57:59,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:59,628 INFO L93 Difference]: Finished difference Result 6942 states and 10506 transitions. [2020-10-26 23:57:59,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:57:59,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 371 [2020-10-26 23:57:59,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:59,665 INFO L225 Difference]: With dead ends: 6942 [2020-10-26 23:57:59,665 INFO L226 Difference]: Without dead ends: 5215 [2020-10-26 23:57:59,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:57:59,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5215 states. [2020-10-26 23:57:59,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5215 to 4519. [2020-10-26 23:57:59,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4519 states. [2020-10-26 23:57:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4519 states to 4519 states and 6334 transitions. [2020-10-26 23:57:59,826 INFO L78 Accepts]: Start accepts. Automaton has 4519 states and 6334 transitions. Word has length 371 [2020-10-26 23:57:59,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:59,827 INFO L481 AbstractCegarLoop]: Abstraction has 4519 states and 6334 transitions. [2020-10-26 23:57:59,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:57:59,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4519 states and 6334 transitions. [2020-10-26 23:57:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-26 23:57:59,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:59,845 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:59,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:57:59,845 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:59,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1833293052, now seen corresponding path program 1 times [2020-10-26 23:57:59,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:59,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506448292] [2020-10-26 23:57:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:59,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:00,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:00,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:01,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:01,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:04,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:04,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 539 [2020-10-26 23:58:04,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:58:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-26 23:58:04,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:58:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 23:58:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:05,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:05,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:05,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:05,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:05,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:58:05,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:05,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:05,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:05,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:05,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:58:05,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:05,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:58:05,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:05,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:05,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:05,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:58:05,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:05,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:58:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:05,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:05,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:05,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:58:05,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-26 23:58:05,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:58:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:05,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:58:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:05,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:05,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:05,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:05,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:05,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:58:05,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:05,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:05,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-26 23:58:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:05,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:05,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:05,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:58:05,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 356 proven. 218 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-26 23:58:06,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506448292] [2020-10-26 23:58:06,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:06,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:06,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084310257] [2020-10-26 23:58:06,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:06,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:06,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:06,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:06,317 INFO L87 Difference]: Start difference. First operand 4519 states and 6334 transitions. Second operand 7 states. [2020-10-26 23:58:07,011 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 23:58:11,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:11,623 INFO L93 Difference]: Finished difference Result 9299 states and 13875 transitions. [2020-10-26 23:58:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:58:11,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 521 [2020-10-26 23:58:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:11,666 INFO L225 Difference]: With dead ends: 9299 [2020-10-26 23:58:11,667 INFO L226 Difference]: Without dead ends: 4677 [2020-10-26 23:58:11,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:58:11,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2020-10-26 23:58:11,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 4532. [2020-10-26 23:58:11,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4532 states. [2020-10-26 23:58:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 5915 transitions. [2020-10-26 23:58:11,888 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 5915 transitions. Word has length 521 [2020-10-26 23:58:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:11,888 INFO L481 AbstractCegarLoop]: Abstraction has 4532 states and 5915 transitions. [2020-10-26 23:58:11,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 5915 transitions. [2020-10-26 23:58:11,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-26 23:58:11,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:11,906 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:11,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:58:11,907 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:11,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:11,907 INFO L82 PathProgramCache]: Analyzing trace with hash 323952384, now seen corresponding path program 1 times [2020-10-26 23:58:11,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:11,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575769057] [2020-10-26 23:58:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:12,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:12,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:12,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:14,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:17,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 542 [2020-10-26 23:58:17,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:58:17,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-26 23:58:17,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:58:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:58:17,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:17,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:17,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:17,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:17,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:17,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:58:17,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:17,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:17,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:17,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:17,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:17,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:58:17,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:17,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:58:17,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:17,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:58:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:17,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:17,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:17,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:17,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:58:17,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:17,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:17,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:58:17,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:17,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:17,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:58:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:17,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:17,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:17,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:17,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:58:17,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:17,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:17,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-26 23:58:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:17,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:17,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:17,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:58:17,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:17,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:17,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:17,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:17,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 260 proven. 285 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-10-26 23:58:18,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575769057] [2020-10-26 23:58:18,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:18,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:18,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941511596] [2020-10-26 23:58:18,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:18,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:18,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:18,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:18,134 INFO L87 Difference]: Start difference. First operand 4532 states and 5915 transitions. Second operand 7 states. [2020-10-26 23:58:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:23,532 INFO L93 Difference]: Finished difference Result 9925 states and 13848 transitions. [2020-10-26 23:58:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:58:23,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 524 [2020-10-26 23:58:23,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:23,577 INFO L225 Difference]: With dead ends: 9925 [2020-10-26 23:58:23,577 INFO L226 Difference]: Without dead ends: 5399 [2020-10-26 23:58:23,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:58:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5399 states. [2020-10-26 23:58:23,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5399 to 5218. [2020-10-26 23:58:23,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5218 states. [2020-10-26 23:58:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5218 states to 5218 states and 6645 transitions. [2020-10-26 23:58:23,805 INFO L78 Accepts]: Start accepts. Automaton has 5218 states and 6645 transitions. Word has length 524 [2020-10-26 23:58:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:23,806 INFO L481 AbstractCegarLoop]: Abstraction has 5218 states and 6645 transitions. [2020-10-26 23:58:23,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5218 states and 6645 transitions. [2020-10-26 23:58:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2020-10-26 23:58:23,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:23,833 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:23,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:58:23,833 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:23,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:23,834 INFO L82 PathProgramCache]: Analyzing trace with hash -645437168, now seen corresponding path program 1 times [2020-10-26 23:58:23,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:23,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026864175] [2020-10-26 23:58:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:24,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:28,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:29,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 681 [2020-10-26 23:58:29,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:58:29,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-26 23:58:29,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:29,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:29,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:58:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:58:29,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:29,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:29,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:29,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:29,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:29,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:58:29,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:29,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:29,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:29,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:29,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:29,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:58:29,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 23:58:29,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:58:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:29,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:58:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:29,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:29,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:29,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:29,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:29,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-26 23:58:29,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:29,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:29,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:58:29,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:29,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:58:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:29,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:29,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:29,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:29,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:58:29,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-26 23:58:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:30,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:30,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:30,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:30,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:30,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:58:30,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:30,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:30,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:30,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:30,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 394 proven. 218 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2020-10-26 23:58:30,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026864175] [2020-10-26 23:58:30,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:30,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:30,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289145651] [2020-10-26 23:58:30,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:30,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:30,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:30,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:30,627 INFO L87 Difference]: Start difference. First operand 5218 states and 6645 transitions. Second operand 7 states. [2020-10-26 23:58:30,773 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-26 23:58:34,447 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:58:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:37,091 INFO L93 Difference]: Finished difference Result 11864 states and 15456 transitions. [2020-10-26 23:58:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:58:37,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 663 [2020-10-26 23:58:37,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:37,137 INFO L225 Difference]: With dead ends: 11864 [2020-10-26 23:58:37,137 INFO L226 Difference]: Without dead ends: 7328 [2020-10-26 23:58:37,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:58:37,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7328 states. [2020-10-26 23:58:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7328 to 7290. [2020-10-26 23:58:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7290 states. [2020-10-26 23:58:37,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7290 states to 7290 states and 8960 transitions. [2020-10-26 23:58:37,372 INFO L78 Accepts]: Start accepts. Automaton has 7290 states and 8960 transitions. Word has length 663 [2020-10-26 23:58:37,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:37,373 INFO L481 AbstractCegarLoop]: Abstraction has 7290 states and 8960 transitions. [2020-10-26 23:58:37,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:37,373 INFO L276 IsEmpty]: Start isEmpty. Operand 7290 states and 8960 transitions. [2020-10-26 23:58:37,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2020-10-26 23:58:37,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:37,392 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:37,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:58:37,393 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:37,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:37,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2038053839, now seen corresponding path program 1 times [2020-10-26 23:58:37,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:37,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627322203] [2020-10-26 23:58:37,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:37,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:39,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 791 [2020-10-26 23:58:42,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:58:42,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-26 23:58:42,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:58:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:58:42,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:42,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:42,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:42,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:58:42,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:42,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:42,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:42,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:42,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:58:42,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:42,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:42,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:42,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:43,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:43,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:43,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:43,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:58:43,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:58:43,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:58:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:43,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:43,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:43,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:43,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-26 23:58:43,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:43,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:43,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:43,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:58:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:58:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:43,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:43,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:43,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:43,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:58:43,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:43,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:58:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:43,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 569 proven. 218 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2020-10-26 23:58:43,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627322203] [2020-10-26 23:58:43,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:43,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:43,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118525859] [2020-10-26 23:58:43,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:43,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:43,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:43,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:43,937 INFO L87 Difference]: Start difference. First operand 7290 states and 8960 transitions. Second operand 7 states. [2020-10-26 23:58:48,121 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:58:49,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:49,838 INFO L93 Difference]: Finished difference Result 13941 states and 17337 transitions. [2020-10-26 23:58:49,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:58:49,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 771 [2020-10-26 23:58:49,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:49,871 INFO L225 Difference]: With dead ends: 13941 [2020-10-26 23:58:49,871 INFO L226 Difference]: Without dead ends: 7335 [2020-10-26 23:58:49,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:58:49,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7335 states. [2020-10-26 23:58:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7335 to 7292. [2020-10-26 23:58:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7292 states. [2020-10-26 23:58:50,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7292 states to 7292 states and 8421 transitions. [2020-10-26 23:58:50,073 INFO L78 Accepts]: Start accepts. Automaton has 7292 states and 8421 transitions. Word has length 771 [2020-10-26 23:58:50,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:50,074 INFO L481 AbstractCegarLoop]: Abstraction has 7292 states and 8421 transitions. [2020-10-26 23:58:50,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 7292 states and 8421 transitions. [2020-10-26 23:58:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2020-10-26 23:58:50,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:50,095 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:50,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:58:50,096 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:50,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:50,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1775527679, now seen corresponding path program 1 times [2020-10-26 23:58:50,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:50,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669834515] [2020-10-26 23:58:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:50,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:50,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:51,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:54,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:55,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:55,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 892 [2020-10-26 23:58:55,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:58:55,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 23:58:55,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:58:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 421 [2020-10-26 23:58:55,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:55,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:55,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:55,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:55,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:55,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:58:55,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:55,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:55,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:55,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:55,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:55,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:55,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:55,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-26 23:58:55,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:58:55,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:56,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:56,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:56,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:56,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-26 23:58:56,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:58:56,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:58:56,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:56,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-26 23:58:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:56,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:56,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:56,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:58:56,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:56,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:58:56,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-26 23:58:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:56,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2020-10-26 23:58:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:56,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:56,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:56,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:58:56,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:58:56,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:58:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:56,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2020-10-26 23:58:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:57,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:57,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:57,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:58:57,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1612 backedges. 338 proven. 744 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-26 23:58:58,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669834515] [2020-10-26 23:58:58,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:58,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:58,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273170322] [2020-10-26 23:58:58,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:58,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:58,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:58,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:58,460 INFO L87 Difference]: Start difference. First operand 7292 states and 8421 transitions. Second operand 7 states. [2020-10-26 23:58:58,591 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:59:01,816 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:59:03,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:03,080 INFO L93 Difference]: Finished difference Result 13919 states and 16181 transitions. [2020-10-26 23:59:03,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:59:03,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 872 [2020-10-26 23:59:03,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:03,108 INFO L225 Difference]: With dead ends: 13919 [2020-10-26 23:59:03,108 INFO L226 Difference]: Without dead ends: 7313 [2020-10-26 23:59:03,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:59:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7313 states. [2020-10-26 23:59:03,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7313 to 7297. [2020-10-26 23:59:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7297 states. [2020-10-26 23:59:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7297 states to 7297 states and 8423 transitions. [2020-10-26 23:59:03,304 INFO L78 Accepts]: Start accepts. Automaton has 7297 states and 8423 transitions. Word has length 872 [2020-10-26 23:59:03,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:03,305 INFO L481 AbstractCegarLoop]: Abstraction has 7297 states and 8423 transitions. [2020-10-26 23:59:03,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:03,306 INFO L276 IsEmpty]: Start isEmpty. Operand 7297 states and 8423 transitions. [2020-10-26 23:59:03,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2020-10-26 23:59:03,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:03,325 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:03,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:59:03,326 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:03,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1365501557, now seen corresponding path program 1 times [2020-10-26 23:59:03,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:03,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886677511] [2020-10-26 23:59:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:03,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:03,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:04,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:05,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:06,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:07,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:08,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 901 [2020-10-26 23:59:08,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:59:08,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-26 23:59:08,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:59:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:59:08,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 493 [2020-10-26 23:59:08,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:08,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:08,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:08,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:08,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:08,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:59:08,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:59:08,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:08,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:08,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:09,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-26 23:59:09,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-26 23:59:09,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-26 23:59:09,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-26 23:59:09,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:59:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-26 23:59:09,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-26 23:59:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:59:10,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:59:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-26 23:59:10,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:59:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:10,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-10-26 23:59:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:10,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:59:10,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:59:10,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:10,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:59:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:10,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-26 23:59:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:59:10,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:59:10,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:10,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:59:10,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:10,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1629 backedges. 343 proven. 1159 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-26 23:59:11,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886677511] [2020-10-26 23:59:11,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:11,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:59:11,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473994503] [2020-10-26 23:59:11,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:59:11,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:11,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:59:11,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:59:11,802 INFO L87 Difference]: Start difference. First operand 7297 states and 8423 transitions. Second operand 11 states. [2020-10-26 23:59:11,950 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:59:15,501 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-10-26 23:59:17,958 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:59:18,692 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-26 23:59:20,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:20,995 INFO L93 Difference]: Finished difference Result 14149 states and 16936 transitions. [2020-10-26 23:59:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 23:59:20,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 881 [2020-10-26 23:59:20,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:21,032 INFO L225 Difference]: With dead ends: 14149 [2020-10-26 23:59:21,032 INFO L226 Difference]: Without dead ends: 7477 [2020-10-26 23:59:21,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2020-10-26 23:59:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2020-10-26 23:59:21,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 7316. [2020-10-26 23:59:21,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7316 states. [2020-10-26 23:59:21,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7316 states to 7316 states and 8462 transitions. [2020-10-26 23:59:21,240 INFO L78 Accepts]: Start accepts. Automaton has 7316 states and 8462 transitions. Word has length 881 [2020-10-26 23:59:21,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:21,241 INFO L481 AbstractCegarLoop]: Abstraction has 7316 states and 8462 transitions. [2020-10-26 23:59:21,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:59:21,242 INFO L276 IsEmpty]: Start isEmpty. Operand 7316 states and 8462 transitions. [2020-10-26 23:59:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2020-10-26 23:59:21,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:21,265 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:21,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:59:21,266 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:21,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:21,267 INFO L82 PathProgramCache]: Analyzing trace with hash -2123962862, now seen corresponding path program 1 times [2020-10-26 23:59:21,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:21,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800010890] [2020-10-26 23:59:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:21,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:21,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:23,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:23,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:24,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:25,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:26,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:26,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 951 [2020-10-26 23:59:26,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:59:26,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-26 23:59:26,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 484 [2020-10-26 23:59:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 23:59:26,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:26,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:26,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:26,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:26,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:26,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:59:26,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:26,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:26,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:26,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:26,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:59:26,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:59:26,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:26,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:59:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:26,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:26,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:59:26,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:26,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:59:26,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:26,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:26,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:26,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:59:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:26,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:26,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:59:26,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:26,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:59:26,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:26,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:26,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:26,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:59:26,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:26,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-10-26 23:59:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:27,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:27,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:27,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:59:27,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:59:27,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:59:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:27,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-26 23:59:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:27,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:27,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:27,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:59:27,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:27,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:59:27,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:59:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:27,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 757 [2020-10-26 23:59:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:27,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:27,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:27,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:59:27,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:59:27,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:59:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:27,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2101 backedges. 773 proven. 238 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2020-10-26 23:59:27,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800010890] [2020-10-26 23:59:27,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:27,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:27,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910764692] [2020-10-26 23:59:27,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:27,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:27,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:27,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:27,963 INFO L87 Difference]: Start difference. First operand 7316 states and 8462 transitions. Second operand 7 states. [2020-10-26 23:59:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:34,063 INFO L93 Difference]: Finished difference Result 16366 states and 19201 transitions. [2020-10-26 23:59:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:59:34,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 929 [2020-10-26 23:59:34,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:34,088 INFO L225 Difference]: With dead ends: 16366 [2020-10-26 23:59:34,088 INFO L226 Difference]: Without dead ends: 7953 [2020-10-26 23:59:34,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:59:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7953 states. [2020-10-26 23:59:34,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7953 to 7927. [2020-10-26 23:59:34,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7927 states. [2020-10-26 23:59:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7927 states to 7927 states and 8616 transitions. [2020-10-26 23:59:34,274 INFO L78 Accepts]: Start accepts. Automaton has 7927 states and 8616 transitions. Word has length 929 [2020-10-26 23:59:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:34,276 INFO L481 AbstractCegarLoop]: Abstraction has 7927 states and 8616 transitions. [2020-10-26 23:59:34,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 7927 states and 8616 transitions. [2020-10-26 23:59:34,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2020-10-26 23:59:34,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:34,302 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:59:34,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:59:34,302 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:34,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:34,303 INFO L82 PathProgramCache]: Analyzing trace with hash 348533200, now seen corresponding path program 1 times [2020-10-26 23:59:34,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:34,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148505710] [2020-10-26 23:59:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:34,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:34,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:39,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:39,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1112 [2020-10-26 23:59:39,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:59:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-26 23:59:39,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:59:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:59:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:39,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:39,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:39,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:39,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:39,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:59:39,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:39,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:39,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:39,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:39,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:39,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:39,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:39,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:59:39,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:39,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:39,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:39,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:39,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:40,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:40,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:40,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:40,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:59:40,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:40,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 23:59:40,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:59:40,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:40,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:59:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:40,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:40,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:40,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:59:40,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:40,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:59:40,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-26 23:59:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:40,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-26 23:59:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:40,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:40,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:40,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:59:40,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:59:40,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:59:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 777 [2020-10-26 23:59:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:40,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:40,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:40,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:40,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:40,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:59:40,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:40,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:40,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:40,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:40,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:40,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 887 [2020-10-26 23:59:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:40,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:40,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:40,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:40,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:40,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:59:40,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:40,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2473 backedges. 739 proven. 385 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2020-10-26 23:59:41,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148505710] [2020-10-26 23:59:41,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:41,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:41,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54534490] [2020-10-26 23:59:41,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:41,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:41,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:41,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:41,344 INFO L87 Difference]: Start difference. First operand 7927 states and 8616 transitions. Second operand 7 states. [2020-10-26 23:59:42,973 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:59:44,943 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:59:48,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:48,873 INFO L93 Difference]: Finished difference Result 18258 states and 20175 transitions. [2020-10-26 23:59:48,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:59:48,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1090 [2020-10-26 23:59:48,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:48,907 INFO L225 Difference]: With dead ends: 18258 [2020-10-26 23:59:48,907 INFO L226 Difference]: Without dead ends: 11015 [2020-10-26 23:59:48,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:59:48,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11015 states. [2020-10-26 23:59:49,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11015 to 11005. [2020-10-26 23:59:49,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11005 states. [2020-10-26 23:59:49,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11005 states to 11005 states and 11966 transitions. [2020-10-26 23:59:49,129 INFO L78 Accepts]: Start accepts. Automaton has 11005 states and 11966 transitions. Word has length 1090 [2020-10-26 23:59:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:49,131 INFO L481 AbstractCegarLoop]: Abstraction has 11005 states and 11966 transitions. [2020-10-26 23:59:49,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 11005 states and 11966 transitions. [2020-10-26 23:59:49,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2020-10-26 23:59:49,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:49,161 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:59:49,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:59:49,161 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:49,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:49,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1879000820, now seen corresponding path program 1 times [2020-10-26 23:59:49,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:49,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806129169] [2020-10-26 23:59:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:49,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:51,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:52,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:54,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:54,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1114 [2020-10-26 23:59:54,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:54,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-26 23:59:54,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-26 23:59:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 23:59:54,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:54,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:54,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:54,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:54,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:54,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:54,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:59:54,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:54,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:54,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:54,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:54,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:54,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:54,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:54,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:54,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:54,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:54,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:59:54,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:54,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:54,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:54,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:54,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:54,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:54,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:59:54,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:54,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:59:54,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:54,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:54,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:59:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:54,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:54,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:59:54,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:59:54,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 23:59:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:54,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-26 23:59:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:55,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:55,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:59:55,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:55,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-26 23:59:55,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:55,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:55,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:55,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-26 23:59:55,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:55,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-10-26 23:59:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:55,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:55,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:55,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:55,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:55,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:59:55,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:55,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:55,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:55,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:55,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:55,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 889 [2020-10-26 23:59:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:55,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:55,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:55,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:55,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:59:55,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:55,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 847 proven. 244 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2020-10-26 23:59:56,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806129169] [2020-10-26 23:59:56,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:56,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:56,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259783500] [2020-10-26 23:59:56,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:56,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:56,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:56,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:56,055 INFO L87 Difference]: Start difference. First operand 11005 states and 11966 transitions. Second operand 7 states. [2020-10-26 23:59:57,651 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:00:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:01,474 INFO L93 Difference]: Finished difference Result 22688 states and 24866 transitions. [2020-10-27 00:00:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:00:01,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1092 [2020-10-27 00:00:01,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:01,505 INFO L225 Difference]: With dead ends: 22688 [2020-10-27 00:00:01,505 INFO L226 Difference]: Without dead ends: 12026 [2020-10-27 00:00:01,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:00:01,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12026 states. [2020-10-27 00:00:01,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12026 to 12012. [2020-10-27 00:00:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12012 states. [2020-10-27 00:00:01,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12012 states to 12012 states and 12801 transitions. [2020-10-27 00:00:01,729 INFO L78 Accepts]: Start accepts. Automaton has 12012 states and 12801 transitions. Word has length 1092 [2020-10-27 00:00:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:01,730 INFO L481 AbstractCegarLoop]: Abstraction has 12012 states and 12801 transitions. [2020-10-27 00:00:01,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:01,730 INFO L276 IsEmpty]: Start isEmpty. Operand 12012 states and 12801 transitions. [2020-10-27 00:00:01,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1268 [2020-10-27 00:00:01,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:01,765 INFO L422 BasicCegarLoop]: trace histogram [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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:01,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:00:01,765 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:01,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:01,766 INFO L82 PathProgramCache]: Analyzing trace with hash -2027454540, now seen corresponding path program 1 times [2020-10-27 00:00:01,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:01,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128082341] [2020-10-27 00:00:01,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:02,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:02,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:03,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:07,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:07,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1293 [2020-10-27 00:00:07,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:00:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 00:00:07,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:00:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:00:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:07,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:07,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:07,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:07,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:00:07,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:07,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:07,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:07,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:00:07,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:07,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:00:07,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:07,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:07,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:00:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:07,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:07,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:07,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:00:07,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:07,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 00:00:07,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:00:07,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:07,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:00:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:07,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:07,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:07,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 00:00:07,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:00:07,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:08,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:00:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:08,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:08,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:08,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:00:08,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:08,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:00:08,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:00:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:08,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:08,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-27 00:00:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:08,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:08,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:08,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:00:08,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:08,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:00:08,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:00:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:08,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:08,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2020-10-27 00:00:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:08,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:08,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:08,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:00:08,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:08,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:00:08,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:00:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:08,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 954 [2020-10-27 00:00:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:08,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:08,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:08,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:00:08,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:08,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:00:08,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:00:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:08,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:08,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1064 [2020-10-27 00:00:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:08,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:08,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:08,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:00:08,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:08,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:00:08,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:08,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:08,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:00:08,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:08,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 817 proven. 553 refuted. 0 times theorem prover too weak. 2427 trivial. 0 not checked. [2020-10-27 00:00:09,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128082341] [2020-10-27 00:00:09,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:09,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:09,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123658435] [2020-10-27 00:00:09,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:09,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:09,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:09,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:09,650 INFO L87 Difference]: Start difference. First operand 12012 states and 12801 transitions. Second operand 7 states. [2020-10-27 00:00:11,896 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 00:00:14,068 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 00:00:15,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:15,196 INFO L93 Difference]: Finished difference Result 24028 states and 25651 transitions. [2020-10-27 00:00:15,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:00:15,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1267 [2020-10-27 00:00:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:15,233 INFO L225 Difference]: With dead ends: 24028 [2020-10-27 00:00:15,233 INFO L226 Difference]: Without dead ends: 12702 [2020-10-27 00:00:15,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:00:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12702 states. [2020-10-27 00:00:15,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12702 to 12690. [2020-10-27 00:00:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12690 states. [2020-10-27 00:00:15,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12690 states to 12690 states and 13519 transitions. [2020-10-27 00:00:15,493 INFO L78 Accepts]: Start accepts. Automaton has 12690 states and 13519 transitions. Word has length 1267 [2020-10-27 00:00:15,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:15,494 INFO L481 AbstractCegarLoop]: Abstraction has 12690 states and 13519 transitions. [2020-10-27 00:00:15,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:15,494 INFO L276 IsEmpty]: Start isEmpty. Operand 12690 states and 13519 transitions. [2020-10-27 00:00:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1318 [2020-10-27 00:00:15,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:15,528 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 00:00:15,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:00:15,529 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:15,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:15,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1293143271, now seen corresponding path program 1 times [2020-10-27 00:00:15,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:15,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428524248] [2020-10-27 00:00:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:16,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:16,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:20,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:20,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1341 [2020-10-27 00:00:20,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:00:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-27 00:00:20,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:00:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:00:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:21,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:21,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:21,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:21,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:21,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:21,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:00:21,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:21,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:21,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:21,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:21,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:00:21,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:21,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 00:00:21,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:21,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:21,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:21,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:21,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:21,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:00:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:21,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:21,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:21,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:00:21,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:21,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 00:00:21,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:21,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:21,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:21,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:00:21,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:21,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:00:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:21,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:21,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:21,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:21,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 00:00:21,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:00:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:21,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:00:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:21,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:21,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:21,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:00:21,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:21,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 00:00:21,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 00:00:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:21,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:22,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-27 00:00:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:22,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:22,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:22,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:00:22,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:22,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 00:00:22,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:00:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:22,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:22,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2020-10-27 00:00:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:22,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:22,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:22,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:00:22,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:00:22,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:00:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1181 [2020-10-27 00:00:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:22,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:22,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:22,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:00:22,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:00:22,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:00:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3231 backedges. 744 proven. 431 refuted. 0 times theorem prover too weak. 2056 trivial. 0 not checked. [2020-10-27 00:00:23,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428524248] [2020-10-27 00:00:23,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:23,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:23,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191432859] [2020-10-27 00:00:23,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:23,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:23,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:23,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:23,582 INFO L87 Difference]: Start difference. First operand 12690 states and 13519 transitions. Second operand 7 states. [2020-10-27 00:00:25,792 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 00:00:28,167 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 00:00:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:29,438 INFO L93 Difference]: Finished difference Result 26730 states and 28731 transitions. [2020-10-27 00:00:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:00:29,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1317 [2020-10-27 00:00:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:29,479 INFO L225 Difference]: With dead ends: 26730 [2020-10-27 00:00:29,479 INFO L226 Difference]: Without dead ends: 14726 [2020-10-27 00:00:29,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:00:29,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14726 states. [2020-10-27 00:00:29,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14726 to 14726. [2020-10-27 00:00:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14726 states. [2020-10-27 00:00:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14726 states to 14726 states and 15602 transitions. [2020-10-27 00:00:29,755 INFO L78 Accepts]: Start accepts. Automaton has 14726 states and 15602 transitions. Word has length 1317 [2020-10-27 00:00:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:29,757 INFO L481 AbstractCegarLoop]: Abstraction has 14726 states and 15602 transitions. [2020-10-27 00:00:29,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 14726 states and 15602 transitions. [2020-10-27 00:00:29,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1363 [2020-10-27 00:00:29,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:29,788 INFO L422 BasicCegarLoop]: trace histogram [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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:29,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:00:29,788 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:29,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:29,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1975600622, now seen corresponding path program 1 times [2020-10-27 00:00:29,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:29,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771374628] [2020-10-27 00:00:29,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:30,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:30,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking...