/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:58:45,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:58:45,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:58:45,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:58:45,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:58:45,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:58:45,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:58:45,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:58:45,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:58:45,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:58:45,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:58:45,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:58:45,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:58:45,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:58:45,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:58:45,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:58:45,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:58:45,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:58:45,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:58:45,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:58:45,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:58:45,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:58:45,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:58:45,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:58:45,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:58:45,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:58:45,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:58:45,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:58:45,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:58:45,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:58:45,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:58:45,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:58:45,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:58:45,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:58:45,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:58:45,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:58:45,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:58:45,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:58:45,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:58:45,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:58:45,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:58:45,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:58:45,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:58:45,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:58:45,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:58:45,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:58:45,503 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:58:45,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:58:45,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:58:45,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:58:45,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:58:45,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:58:45,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:58:45,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:58:45,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:58:45,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:58:45,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:58:45,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:58:45,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:58:45,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:58:45,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:58:45,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:58:45,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:58:45,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:58:45,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:58:45,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:58:45,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:58:45,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:58:45,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:58:45,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:58:45,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:58:45,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:58:45,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:58:45,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:58:45,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:58:45,950 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:58:45,951 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:58:45,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2020-10-29 04:58:46,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6ee8719b/90b6b350b5eb45cb9f0ea957aa613b14/FLAGd589213c5 [2020-10-29 04:58:46,865 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:58:46,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2020-10-29 04:58:46,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6ee8719b/90b6b350b5eb45cb9f0ea957aa613b14/FLAGd589213c5 [2020-10-29 04:58:46,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6ee8719b/90b6b350b5eb45cb9f0ea957aa613b14 [2020-10-29 04:58:46,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:58:46,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:58:46,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:58:46,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:58:46,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:58:46,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:58:46" (1/1) ... [2020-10-29 04:58:46,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4e8fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:46, skipping insertion in model container [2020-10-29 04:58:46,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:58:46" (1/1) ... [2020-10-29 04:58:46,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:58:47,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:58:47,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:58:47,871 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:58:48,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:58:48,166 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:58:48,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:48 WrapperNode [2020-10-29 04:58:48,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:58:48,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:58:48,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:58:48,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:58:48,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:48" (1/1) ... [2020-10-29 04:58:48,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:48" (1/1) ... [2020-10-29 04:58:48,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:48" (1/1) ... [2020-10-29 04:58:48,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:48" (1/1) ... [2020-10-29 04:58:48,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:48" (1/1) ... [2020-10-29 04:58:48,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:48" (1/1) ... [2020-10-29 04:58:48,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:48" (1/1) ... [2020-10-29 04:58:48,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:58:48,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:58:48,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:58:48,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:58:48,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:58:48,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:58:48,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:58:48,642 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:58:48,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:58:48,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:58:48,644 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:58:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:58:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:58:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:58:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:58:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:58:48,646 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:58:48,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:58:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:58:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:58:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:58:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:58:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:58:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:58:51,163 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:58:51,165 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:58:51,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:51 BoogieIcfgContainer [2020-10-29 04:58:51,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:58:51,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:58:51,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:58:51,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:58:51,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:58:46" (1/3) ... [2020-10-29 04:58:51,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643e708f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:51, skipping insertion in model container [2020-10-29 04:58:51,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:48" (2/3) ... [2020-10-29 04:58:51,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643e708f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:51, skipping insertion in model container [2020-10-29 04:58:51,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:51" (3/3) ... [2020-10-29 04:58:51,179 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label43.c [2020-10-29 04:58:51,192 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:58:51,204 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:58:51,219 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:58:51,269 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:58:51,269 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:58:51,269 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:58:51,269 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:58:51,270 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:58:51,270 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:58:51,270 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:58:51,270 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:58:51,310 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:58:51,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 04:58:51,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:51,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:51,329 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:51,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:51,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1977011172, now seen corresponding path program 1 times [2020-10-29 04:58:51,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:51,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714654141] [2020-10-29 04:58:51,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:52,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:52,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:56,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:56,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 04:58:56,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:56,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4782 [2020-10-29 04:58:56,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:56,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:58:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:58:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 04:58:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:58:57,234 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:57,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:57,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:57,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:57,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 04:58:57,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:57,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:58:57,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:58:57,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714654141] [2020-10-29 04:58:57,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:58:57,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:58:57,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530155319] [2020-10-29 04:58:57,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:57,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:57,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:57,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:57,596 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 5 states. [2020-10-29 04:58:57,850 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:58,250 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 04:59:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:03,061 INFO L93 Difference]: Finished difference Result 1105 states and 1976 transitions. [2020-10-29 04:59:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:59:03,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-29 04:59:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:03,088 INFO L225 Difference]: With dead ends: 1105 [2020-10-29 04:59:03,089 INFO L226 Difference]: Without dead ends: 700 [2020-10-29 04:59:03,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-29 04:59:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 681. [2020-10-29 04:59:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-10-29 04:59:03,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1109 transitions. [2020-10-29 04:59:03,209 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1109 transitions. Word has length 157 [2020-10-29 04:59:03,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:03,210 INFO L481 AbstractCegarLoop]: Abstraction has 681 states and 1109 transitions. [2020-10-29 04:59:03,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1109 transitions. [2020-10-29 04:59:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-29 04:59:03,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:03,219 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:03,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:59:03,220 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:03,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:03,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1131656528, now seen corresponding path program 1 times [2020-10-29 04:59:03,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:03,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647590361] [2020-10-29 04:59:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:03,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:04,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:04,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:06,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:06,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:06,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 04:59:06,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:59:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3333 [2020-10-29 04:59:06,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:06,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:59:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-29 04:59:06,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:59:07,055 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:07,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:07,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:07,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:07,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:07,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:59:07,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:07,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:07,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:07,233 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:59:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:07,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:07,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:07,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:07,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:59:07,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:07,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 04:59:07,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:07,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:07,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:59:07,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:07,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647590361] [2020-10-29 04:59:07,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:07,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:07,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425232168] [2020-10-29 04:59:07,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:07,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:07,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:07,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:07,406 INFO L87 Difference]: Start difference. First operand 681 states and 1109 transitions. Second operand 5 states. [2020-10-29 04:59:07,869 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:11,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:11,220 INFO L93 Difference]: Finished difference Result 1989 states and 3274 transitions. [2020-10-29 04:59:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:11,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-29 04:59:11,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:11,228 INFO L225 Difference]: With dead ends: 1989 [2020-10-29 04:59:11,228 INFO L226 Difference]: Without dead ends: 684 [2020-10-29 04:59:11,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:11,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-10-29 04:59:11,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 680. [2020-10-29 04:59:11,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-10-29 04:59:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1107 transitions. [2020-10-29 04:59:11,271 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1107 transitions. Word has length 167 [2020-10-29 04:59:11,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:11,272 INFO L481 AbstractCegarLoop]: Abstraction has 680 states and 1107 transitions. [2020-10-29 04:59:11,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1107 transitions. [2020-10-29 04:59:11,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 04:59:11,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:11,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:11,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:59:11,276 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:11,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1096824911, now seen corresponding path program 1 times [2020-10-29 04:59:11,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:11,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69422636] [2020-10-29 04:59:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:11,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:11,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:15,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:15,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 04:59:15,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:59:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4364 [2020-10-29 04:59:15,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:15,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:59:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 04:59:15,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:16,090 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:16,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:16,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:16,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:16,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:16,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:16,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:59:16,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:16,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:16,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:16,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:16,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:59:16,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:16,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:59:16,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:16,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:16,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:16,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:16,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:59:16,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:16,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69422636] [2020-10-29 04:59:16,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:16,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:16,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442130856] [2020-10-29 04:59:16,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:16,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:16,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:16,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:16,345 INFO L87 Difference]: Start difference. First operand 680 states and 1107 transitions. Second operand 5 states. [2020-10-29 04:59:16,704 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:19,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:19,782 INFO L93 Difference]: Finished difference Result 1993 states and 3298 transitions. [2020-10-29 04:59:19,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:19,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-29 04:59:19,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:19,804 INFO L225 Difference]: With dead ends: 1993 [2020-10-29 04:59:19,804 INFO L226 Difference]: Without dead ends: 1319 [2020-10-29 04:59:19,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-10-29 04:59:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 682. [2020-10-29 04:59:19,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2020-10-29 04:59:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1068 transitions. [2020-10-29 04:59:19,877 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1068 transitions. Word has length 168 [2020-10-29 04:59:19,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:19,879 INFO L481 AbstractCegarLoop]: Abstraction has 682 states and 1068 transitions. [2020-10-29 04:59:19,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1068 transitions. [2020-10-29 04:59:19,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 04:59:19,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:19,884 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:19,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:59:19,884 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:19,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:19,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1571527197, now seen corresponding path program 1 times [2020-10-29 04:59:19,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:19,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39893236] [2020-10-29 04:59:19,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:19,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:22,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:22,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 04:59:22,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2162 [2020-10-29 04:59:22,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:22,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:59:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 04:59:22,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:22,448 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:22,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:22,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:22,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:22,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:22,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:22,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:59:22,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:22,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:22,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:22,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:22,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:22,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:22,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:59:22,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:22,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:59:22,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:22,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:22,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:22,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:22,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:59:22,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:22,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39893236] [2020-10-29 04:59:22,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:22,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:59:22,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233070450] [2020-10-29 04:59:22,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:59:22,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:22,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:59:22,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:22,695 INFO L87 Difference]: Start difference. First operand 682 states and 1068 transitions. Second operand 6 states. [2020-10-29 04:59:23,056 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:23,305 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:28,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:28,111 INFO L93 Difference]: Finished difference Result 2620 states and 4214 transitions. [2020-10-29 04:59:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:59:28,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-10-29 04:59:28,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:28,128 INFO L225 Difference]: With dead ends: 2620 [2020-10-29 04:59:28,128 INFO L226 Difference]: Without dead ends: 1944 [2020-10-29 04:59:28,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:59:28,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2020-10-29 04:59:28,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1728. [2020-10-29 04:59:28,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2020-10-29 04:59:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2541 transitions. [2020-10-29 04:59:28,223 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2541 transitions. Word has length 169 [2020-10-29 04:59:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:28,224 INFO L481 AbstractCegarLoop]: Abstraction has 1728 states and 2541 transitions. [2020-10-29 04:59:28,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:59:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2541 transitions. [2020-10-29 04:59:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-29 04:59:28,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:28,234 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:28,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:59:28,235 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:28,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:28,236 INFO L82 PathProgramCache]: Analyzing trace with hash -432655756, now seen corresponding path program 1 times [2020-10-29 04:59:28,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:28,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078134290] [2020-10-29 04:59:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:29,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:29,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:30,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:30,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 04:59:30,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:59:30,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2695 [2020-10-29 04:59:30,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:30,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 04:59:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 04:59:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:31,414 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:31,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:31,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:31,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:31,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:31,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:31,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:59:31,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:31,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:31,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:31,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:31,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:31,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:31,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:59:31,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:31,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 04:59:31,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:31,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 04:59:31,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:31,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078134290] [2020-10-29 04:59:31,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:31,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:31,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994803486] [2020-10-29 04:59:31,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:31,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:31,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:31,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:31,757 INFO L87 Difference]: Start difference. First operand 1728 states and 2541 transitions. Second operand 5 states. [2020-10-29 04:59:32,106 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:35,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:35,689 INFO L93 Difference]: Finished difference Result 5139 states and 7740 transitions. [2020-10-29 04:59:35,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:35,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-29 04:59:35,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:35,718 INFO L225 Difference]: With dead ends: 5139 [2020-10-29 04:59:35,718 INFO L226 Difference]: Without dead ends: 3417 [2020-10-29 04:59:35,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:35,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2020-10-29 04:59:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 2992. [2020-10-29 04:59:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2992 states. [2020-10-29 04:59:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 4311 transitions. [2020-10-29 04:59:35,859 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 4311 transitions. Word has length 193 [2020-10-29 04:59:35,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:35,860 INFO L481 AbstractCegarLoop]: Abstraction has 2992 states and 4311 transitions. [2020-10-29 04:59:35,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 4311 transitions. [2020-10-29 04:59:35,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 04:59:35,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:35,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:35,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:59:35,873 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:35,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:35,874 INFO L82 PathProgramCache]: Analyzing trace with hash -831461051, now seen corresponding path program 1 times [2020-10-29 04:59:35,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:35,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671723641] [2020-10-29 04:59:35,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:37,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:37,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-29 04:59:37,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:37,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1103 [2020-10-29 04:59:37,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:37,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:37,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:59:37,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:59:37,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 04:59:37,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:37,361 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:37,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:37,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:37,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:37,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:37,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:59:37,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:37,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:37,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:37,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:37,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:59:37,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:37,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:37,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:37,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:37,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 04:59:37,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:37,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 04:59:37,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:37,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 04:59:37,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:37,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671723641] [2020-10-29 04:59:37,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:59:37,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:59:37,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588961295] [2020-10-29 04:59:37,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:37,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:37,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:37,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:37,890 INFO L87 Difference]: Start difference. First operand 2992 states and 4311 transitions. Second operand 7 states. [2020-10-29 04:59:38,170 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:39,050 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:42,189 INFO L93 Difference]: Finished difference Result 6078 states and 9055 transitions. [2020-10-29 04:59:42,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:59:42,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-29 04:59:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:42,210 INFO L225 Difference]: With dead ends: 6078 [2020-10-29 04:59:42,210 INFO L226 Difference]: Without dead ends: 3092 [2020-10-29 04:59:42,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:59:42,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2020-10-29 04:59:42,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3044. [2020-10-29 04:59:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3044 states. [2020-10-29 04:59:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 3997 transitions. [2020-10-29 04:59:42,357 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 3997 transitions. Word has length 220 [2020-10-29 04:59:42,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:42,357 INFO L481 AbstractCegarLoop]: Abstraction has 3044 states and 3997 transitions. [2020-10-29 04:59:42,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:59:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 3997 transitions. [2020-10-29 04:59:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 04:59:42,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:42,369 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:42,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:59:42,369 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:42,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:42,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1901678573, now seen corresponding path program 1 times [2020-10-29 04:59:42,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:42,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77056214] [2020-10-29 04:59:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:42,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:42,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:47,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:47,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 04:59:47,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:59:47,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 04:59:47,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:47,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:47,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:59:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:59:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 04:59:47,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:47,797 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:47,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:47,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:47,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:47,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:47,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:47,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:59:47,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:47,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:47,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:47,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:47,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:59:47,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:47,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:59:47,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:47,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:59:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:59:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:47,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:48,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:48,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:59:48,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 04:59:48,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:48,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:59:48,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:48,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:59:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:48,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:48,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 04:59:48,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:48,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 04:59:48,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:48,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:48,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:48,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 04:59:48,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:59:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 106 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:59:48,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77056214] [2020-10-29 04:59:48,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:48,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:59:48,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886835859] [2020-10-29 04:59:48,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:59:48,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:48,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:59:48,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:59:48,840 INFO L87 Difference]: Start difference. First operand 3044 states and 3997 transitions. Second operand 8 states. [2020-10-29 04:59:49,245 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:51,013 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:59:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:55,256 INFO L93 Difference]: Finished difference Result 9294 states and 13350 transitions. [2020-10-29 04:59:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:59:55,257 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 256 [2020-10-29 04:59:55,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:55,297 INFO L225 Difference]: With dead ends: 9294 [2020-10-29 04:59:55,297 INFO L226 Difference]: Without dead ends: 6256 [2020-10-29 04:59:55,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:59:55,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2020-10-29 04:59:55,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 5673. [2020-10-29 04:59:55,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5673 states. [2020-10-29 04:59:55,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 7352 transitions. [2020-10-29 04:59:55,563 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 7352 transitions. Word has length 256 [2020-10-29 04:59:55,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:55,564 INFO L481 AbstractCegarLoop]: Abstraction has 5673 states and 7352 transitions. [2020-10-29 04:59:55,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:59:55,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 7352 transitions. [2020-10-29 04:59:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 04:59:55,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:55,583 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:55,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:59:55,583 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:55,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:55,584 INFO L82 PathProgramCache]: Analyzing trace with hash -534880661, now seen corresponding path program 1 times [2020-10-29 04:59:55,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:55,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655195879] [2020-10-29 04:59:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:55,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:55,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:00,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:00,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 05:00:00,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:00:00,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 05:00:00,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:00,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:00,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:00,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 05:00:00,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 05:00:00,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:00,984 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:00,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:00,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:01,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:01,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:01,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:01,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:00:01,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:01,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:01,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:01,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:01,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:01,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:00:01,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:01,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:00:01,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:01,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:01,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:01,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:01,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:01,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:01,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:00:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:01,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:01,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:01,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:00:01,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:01,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 05:00:01,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:01,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:01,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:01,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:01,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:00:01,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:01,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 05:00:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:01,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:01,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:01,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 05:00:01,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 05:00:01,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:01,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 05:00:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 05:00:01,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655195879] [2020-10-29 05:00:01,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:01,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:00:01,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714787453] [2020-10-29 05:00:01,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:00:01,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:01,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:00:01,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:00:01,678 INFO L87 Difference]: Start difference. First operand 5673 states and 7352 transitions. Second operand 8 states. [2020-10-29 05:00:01,944 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:00:02,721 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 05:00:03,511 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:00:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:07,314 INFO L93 Difference]: Finished difference Result 17571 states and 23643 transitions. [2020-10-29 05:00:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 05:00:07,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 256 [2020-10-29 05:00:07,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:07,368 INFO L225 Difference]: With dead ends: 17571 [2020-10-29 05:00:07,368 INFO L226 Difference]: Without dead ends: 12334 [2020-10-29 05:00:07,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-29 05:00:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12334 states. [2020-10-29 05:00:07,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12334 to 12303. [2020-10-29 05:00:07,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12303 states. [2020-10-29 05:00:07,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12303 states to 12303 states and 15335 transitions. [2020-10-29 05:00:07,823 INFO L78 Accepts]: Start accepts. Automaton has 12303 states and 15335 transitions. Word has length 256 [2020-10-29 05:00:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:07,823 INFO L481 AbstractCegarLoop]: Abstraction has 12303 states and 15335 transitions. [2020-10-29 05:00:07,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:00:07,824 INFO L276 IsEmpty]: Start isEmpty. Operand 12303 states and 15335 transitions. [2020-10-29 05:00:07,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 05:00:07,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:07,861 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:07,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:00:07,861 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:07,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:07,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1815874343, now seen corresponding path program 1 times [2020-10-29 05:00:07,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:07,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572613669] [2020-10-29 05:00:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:07,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:08,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:08,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:12,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:12,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 05:00:12,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:00:12,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4766 [2020-10-29 05:00:12,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:12,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:00:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 05:00:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 05:00:12,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:12,987 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:12,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:13,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:13,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:13,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:00:13,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:13,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:13,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:13,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:13,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:13,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:13,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:00:13,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:13,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:00:13,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:13,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:13,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:13,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:13,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:00:13,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:13,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:00:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:13,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:13,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:13,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:00:13,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:13,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 05:00:13,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:13,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 05:00:13,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:13,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:00:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:13,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:13,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:13,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 05:00:13,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 05:00:13,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:13,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 05:00:13,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 133 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 05:00:13,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572613669] [2020-10-29 05:00:13,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:13,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:00:13,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958010122] [2020-10-29 05:00:13,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:00:13,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:13,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:00:13,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:00:13,660 INFO L87 Difference]: Start difference. First operand 12303 states and 15335 transitions. Second operand 7 states. [2020-10-29 05:00:14,044 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:00:14,422 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:19,002 INFO L93 Difference]: Finished difference Result 24638 states and 33118 transitions. [2020-10-29 05:00:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:00:19,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-29 05:00:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:19,062 INFO L225 Difference]: With dead ends: 24638 [2020-10-29 05:00:19,062 INFO L226 Difference]: Without dead ends: 13636 [2020-10-29 05:00:19,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:00:19,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13636 states. [2020-10-29 05:00:19,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13636 to 13188. [2020-10-29 05:00:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13188 states. [2020-10-29 05:00:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 16379 transitions. [2020-10-29 05:00:19,615 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 16379 transitions. Word has length 265 [2020-10-29 05:00:19,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:19,616 INFO L481 AbstractCegarLoop]: Abstraction has 13188 states and 16379 transitions. [2020-10-29 05:00:19,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:19,616 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 16379 transitions. [2020-10-29 05:00:19,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-29 05:00:19,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:19,654 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:19,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:00:19,654 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:19,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:19,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1176891887, now seen corresponding path program 1 times [2020-10-29 05:00:19,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:19,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168944107] [2020-10-29 05:00:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:19,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:21,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:21,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:24,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:24,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-29 05:00:24,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:00:24,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 05:00:24,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:24,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:24,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-29 05:00:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 05:00:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,025 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:25,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:25,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:25,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:00:25,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:00:25,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:25,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:00:25,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:25,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:25,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:25,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:00:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:00:25,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:25,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:00:25,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:25,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:25,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:25,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:00:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:00:25,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:25,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:00:25,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:00:25,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 05:00:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 05:00:25,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:25,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 05:00:25,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 05:00:25,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-29 05:00:25,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168944107] [2020-10-29 05:00:25,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:25,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:00:25,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067968167] [2020-10-29 05:00:25,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:00:25,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:25,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:00:25,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:00:25,525 INFO L87 Difference]: Start difference. First operand 13188 states and 16379 transitions. Second operand 7 states. [2020-10-29 05:00:25,811 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:26,764 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:00:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:29,662 INFO L93 Difference]: Finished difference Result 29427 states and 36984 transitions. [2020-10-29 05:00:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:00:29,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-29 05:00:29,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:29,722 INFO L225 Difference]: With dead ends: 29427 [2020-10-29 05:00:29,722 INFO L226 Difference]: Without dead ends: 17966 [2020-10-29 05:00:29,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:00:29,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17966 states. [2020-10-29 05:00:30,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17966 to 17886. [2020-10-29 05:00:30,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17886 states. [2020-10-29 05:00:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17886 states to 17886 states and 22019 transitions. [2020-10-29 05:00:30,318 INFO L78 Accepts]: Start accepts. Automaton has 17886 states and 22019 transitions. Word has length 275 [2020-10-29 05:00:30,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:30,318 INFO L481 AbstractCegarLoop]: Abstraction has 17886 states and 22019 transitions. [2020-10-29 05:00:30,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:30,318 INFO L276 IsEmpty]: Start isEmpty. Operand 17886 states and 22019 transitions. [2020-10-29 05:00:30,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-29 05:00:30,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:30,372 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:30,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:00:30,372 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:30,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:30,373 INFO L82 PathProgramCache]: Analyzing trace with hash 307807926, now seen corresponding path program 1 times [2020-10-29 05:00:30,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:30,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477243720] [2020-10-29 05:00:30,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:30,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:30,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:32,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:35,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:35,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-29 05:00:35,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:00:35,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 05:00:35,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:35,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:00:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 05:00:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 05:00:35,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:35,755 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:35,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:35,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:35,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:35,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:35,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:35,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:00:35,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:35,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:35,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:35,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:35,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:00:35,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:35,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:00:35,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:35,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:35,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:35,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:35,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:35,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:00:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:35,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:35,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:00:35,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:35,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:00:35,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:35,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:35,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:35,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:00:35,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 05:00:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:35,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:36,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:36,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:00:36,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 05:00:36,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:36,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 05:00:36,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 05:00:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:36,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:36,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:36,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 05:00:36,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:36,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 05:00:36,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:36,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:36,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:36,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:36,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 05:00:36,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 182 proven. 6 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-29 05:00:36,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477243720] [2020-10-29 05:00:36,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:36,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:00:36,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869332777] [2020-10-29 05:00:36,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:00:36,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:36,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:00:36,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:00:36,375 INFO L87 Difference]: Start difference. First operand 17886 states and 22019 transitions. Second operand 7 states. [2020-10-29 05:00:36,874 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:38,240 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:43,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:43,913 INFO L93 Difference]: Finished difference Result 63101 states and 84071 transitions. [2020-10-29 05:00:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:00:43,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-29 05:00:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:44,123 INFO L225 Difference]: With dead ends: 63101 [2020-10-29 05:00:44,123 INFO L226 Difference]: Without dead ends: 46960 [2020-10-29 05:00:44,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:00:44,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46960 states. [2020-10-29 05:00:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46960 to 46919. [2020-10-29 05:00:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46919 states. [2020-10-29 05:00:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46919 states to 46919 states and 63177 transitions. [2020-10-29 05:00:46,109 INFO L78 Accepts]: Start accepts. Automaton has 46919 states and 63177 transitions. Word has length 282 [2020-10-29 05:00:46,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:46,110 INFO L481 AbstractCegarLoop]: Abstraction has 46919 states and 63177 transitions. [2020-10-29 05:00:46,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:46,110 INFO L276 IsEmpty]: Start isEmpty. Operand 46919 states and 63177 transitions. [2020-10-29 05:00:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-29 05:00:46,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:46,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:00:46,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 05:00:46,272 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:46,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:46,273 INFO L82 PathProgramCache]: Analyzing trace with hash 382835878, now seen corresponding path program 1 times [2020-10-29 05:00:46,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:46,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224872107] [2020-10-29 05:00:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:46,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:47,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:48,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:48,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:51,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:51,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-29 05:00:51,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:00:51,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 05:00:51,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:51,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:51,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:00:51,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:00:51,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 05:00:51,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:52,155 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:52,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:52,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:52,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:52,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:52,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:00:52,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:52,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:52,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:52,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:52,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:52,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:00:52,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:52,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:00:52,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:52,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:00:52,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:52,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:00:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:52,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:52,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:52,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 05:00:52,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:52,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-29 05:00:52,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:52,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 05:00:52,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 14 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:00:52,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224872107] [2020-10-29 05:00:52,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:52,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:00:52,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701690819] [2020-10-29 05:00:52,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:00:52,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:52,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:00:52,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:00:52,813 INFO L87 Difference]: Start difference. First operand 46919 states and 63177 transitions. Second operand 6 states. [2020-10-29 05:00:53,094 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:57,754 INFO L93 Difference]: Finished difference Result 113595 states and 154880 transitions. [2020-10-29 05:00:57,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:00:57,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 280 [2020-10-29 05:00:57,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:58,284 INFO L225 Difference]: With dead ends: 113595 [2020-10-29 05:00:58,284 INFO L226 Difference]: Without dead ends: 68413 [2020-10-29 05:00:58,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:00:58,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68413 states. [2020-10-29 05:01:01,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68413 to 62147. [2020-10-29 05:01:01,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62147 states. [2020-10-29 05:01:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62147 states to 62147 states and 83754 transitions. [2020-10-29 05:01:01,534 INFO L78 Accepts]: Start accepts. Automaton has 62147 states and 83754 transitions. Word has length 280 [2020-10-29 05:01:01,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:01,535 INFO L481 AbstractCegarLoop]: Abstraction has 62147 states and 83754 transitions. [2020-10-29 05:01:01,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:01:01,535 INFO L276 IsEmpty]: Start isEmpty. Operand 62147 states and 83754 transitions. [2020-10-29 05:01:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-29 05:01:01,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:01,698 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:01,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 05:01:01,698 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:01,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:01,699 INFO L82 PathProgramCache]: Analyzing trace with hash 725612005, now seen corresponding path program 1 times [2020-10-29 05:01:01,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:01,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532006347] [2020-10-29 05:01:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:01,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:04,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:06,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:06,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-29 05:01:06,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:01:06,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 05:01:06,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:06,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 05:01:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:01:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 05:01:06,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:07,100 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:07,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:07,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:07,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:07,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:01:07,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:07,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:07,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:07,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:07,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:01:07,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:07,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:07,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:07,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:07,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:01:07,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:07,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 05:01:07,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:07,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:01:07,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:07,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:01:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:07,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:07,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:07,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 05:01:07,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:07,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 05:01:07,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:07,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 05:01:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 05:01:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:07,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:07,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:07,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:01:07,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:07,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 05:01:07,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:07,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:07,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:01:07,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:07,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 05:01:07,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:07,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 05:01:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:07,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:07,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:07,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:01:07,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 05:01:07,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:07,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 05:01:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:07,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-29 05:01:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:07,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:07,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:07,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 05:01:07,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 05:01:07,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:07,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 05:01:07,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 207 proven. 73 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-29 05:01:08,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532006347] [2020-10-29 05:01:08,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:08,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 05:01:08,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164591455] [2020-10-29 05:01:08,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 05:01:08,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:08,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 05:01:08,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:01:08,185 INFO L87 Difference]: Start difference. First operand 62147 states and 83754 transitions. Second operand 11 states. [2020-10-29 05:01:08,479 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:01:09,538 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 160 [2020-10-29 05:01:10,654 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:01:11,123 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 160 [2020-10-29 05:01:14,453 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:01:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:38,712 INFO L93 Difference]: Finished difference Result 317394 states and 591711 transitions. [2020-10-29 05:01:38,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 05:01:38,717 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 314 [2020-10-29 05:01:38,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:42,706 INFO L225 Difference]: With dead ends: 317394 [2020-10-29 05:01:42,706 INFO L226 Difference]: Without dead ends: 257418 [2020-10-29 05:01:43,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=259, Invalid=863, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 05:01:43,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257418 states. [2020-10-29 05:01:58,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257418 to 245888. [2020-10-29 05:01:58,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245888 states.