/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:02:11,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:02:11,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:02:11,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:02:11,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:02:11,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:02:11,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:02:11,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:02:11,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:02:11,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:02:11,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:02:11,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:02:11,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:02:11,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:02:11,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:02:11,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:02:11,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:02:11,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:02:11,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:02:11,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:02:11,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:02:11,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:02:11,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:02:11,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:02:11,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:02:11,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:02:11,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:02:11,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:02:11,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:02:11,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 00:02:11,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:02:11,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:02:11,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:02:11,539 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 [2020-10-27 00:02:11,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:02:11,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:02:11,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:02:11,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:02:11,594 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:02:11,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:02:11,595 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:02:11,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:02:11,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:02:11,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:02:11,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:02:11,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:02:11,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:02:11,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:02:11,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:02:11,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:02:11,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:02:11,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:02:11,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:02:11,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:02:11,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:02:11,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:02:11,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:02:11,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:02:11,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:02:11,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:02:11,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:02:11,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:02:11,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:02:11,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:02:12,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:02:12,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:02:12,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:02:12,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:02:12,062 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:02:12,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label49.c [2020-10-27 00:02:12,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc3f7d80d/08d90d1683a44c8fa08ec9f3be563e1f/FLAG412a1add2 [2020-10-27 00:02:13,210 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:02:13,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label49.c [2020-10-27 00:02:13,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc3f7d80d/08d90d1683a44c8fa08ec9f3be563e1f/FLAG412a1add2 [2020-10-27 00:02:13,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc3f7d80d/08d90d1683a44c8fa08ec9f3be563e1f [2020-10-27 00:02:13,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:02:13,306 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:02:13,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:02:13,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:02:13,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:02:13,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:02:13" (1/1) ... [2020-10-27 00:02:13,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd4ab53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:13, skipping insertion in model container [2020-10-27 00:02:13,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:02:13" (1/1) ... [2020-10-27 00:02:13,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:02:13,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:02:14,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:02:14,261 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:02:14,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:02:14,507 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:02:14,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:14 WrapperNode [2020-10-27 00:02:14,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:02:14,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:02:14,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:02:14,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:02:14,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:14" (1/1) ... [2020-10-27 00:02:14,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:14" (1/1) ... [2020-10-27 00:02:14,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:14" (1/1) ... [2020-10-27 00:02:14,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:14" (1/1) ... [2020-10-27 00:02:14,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:14" (1/1) ... [2020-10-27 00:02:14,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:14" (1/1) ... [2020-10-27 00:02:14,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:14" (1/1) ... [2020-10-27 00:02:14,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:02:14,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:02:14,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:02:14,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:02:14,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:14" (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 [2020-10-27 00:02:14,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:02:14,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:02:14,792 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:02:14,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:02:14,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:02:14,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:02:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:02:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:02:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:02:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:02:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:02:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:02:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:02:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:02:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:02:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:02:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:02:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:02:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:02:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:02:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:02:17,917 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:02:17,918 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:02:17,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:02:17 BoogieIcfgContainer [2020-10-27 00:02:17,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:02:17,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:02:17,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:02:17,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:02:17,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:02:13" (1/3) ... [2020-10-27 00:02:17,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3aaa39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:02:17, skipping insertion in model container [2020-10-27 00:02:17,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:14" (2/3) ... [2020-10-27 00:02:17,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3aaa39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:02:17, skipping insertion in model container [2020-10-27 00:02:17,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:02:17" (3/3) ... [2020-10-27 00:02:17,936 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label49.c [2020-10-27 00:02:17,949 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:02:17,956 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:02:17,971 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:02:18,022 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:02:18,022 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:02:18,022 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:02:18,022 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:02:18,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:02:18,023 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:02:18,023 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:02:18,023 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:02:18,067 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 00:02:18,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 00:02:18,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:18,084 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] [2020-10-27 00:02:18,085 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:18,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:18,095 INFO L82 PathProgramCache]: Analyzing trace with hash -340250524, now seen corresponding path program 1 times [2020-10-27 00:02:18,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:18,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168759532] [2020-10-27 00:02:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:18,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:19,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:19,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:02:19,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:19,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-27 00:02:19,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:02:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 00:02:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:02:19,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:19,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:19,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:19,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:19,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:02:19,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:02:19,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168759532] [2020-10-27 00:02:19,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:02:19,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:02:19,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360041244] [2020-10-27 00:02:19,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:02:19,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:19,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:02:19,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:02:19,306 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 00:02:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:24,502 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-27 00:02:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:02:24,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-27 00:02:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:24,527 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 00:02:24,528 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 00:02:24,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:02:24,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 00:02:24,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-27 00:02:24,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-27 00:02:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-27 00:02:24,667 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 67 [2020-10-27 00:02:24,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:24,669 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-27 00:02:24,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:02:24,670 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-27 00:02:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 00:02:24,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:24,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:24,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:02:24,681 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:24,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:24,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1540042715, now seen corresponding path program 1 times [2020-10-27 00:02:24,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:24,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811695769] [2020-10-27 00:02:24,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:24,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:25,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:26,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:26,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 00:02:26,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:02:26,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1388 [2020-10-27 00:02:26,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:26,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:02:26,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:26,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:02:26,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:02:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:26,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:26,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:26,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:26,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:26,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:02:26,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:26,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:26,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:26,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:26,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:26,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:26,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:26,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:02:26,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 00:02:26,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:02:26,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:02:26,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811695769] [2020-10-27 00:02:26,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:02:26,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:02:26,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785322721] [2020-10-27 00:02:26,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:26,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:26,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:26,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:26,531 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-27 00:02:37,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:37,877 INFO L93 Difference]: Finished difference Result 2090 states and 3102 transitions. [2020-10-27 00:02:37,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:02:37,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-27 00:02:37,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:37,891 INFO L225 Difference]: With dead ends: 2090 [2020-10-27 00:02:37,892 INFO L226 Difference]: Without dead ends: 1403 [2020-10-27 00:02:37,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:02:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-27 00:02:37,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1379. [2020-10-27 00:02:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-10-27 00:02:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1813 transitions. [2020-10-27 00:02:37,970 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1813 transitions. Word has length 143 [2020-10-27 00:02:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:37,970 INFO L481 AbstractCegarLoop]: Abstraction has 1379 states and 1813 transitions. [2020-10-27 00:02:37,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1813 transitions. [2020-10-27 00:02:37,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-27 00:02:37,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:37,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:02:37,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:02:37,979 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:37,980 INFO L82 PathProgramCache]: Analyzing trace with hash -91938922, now seen corresponding path program 1 times [2020-10-27 00:02:37,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:37,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815751704] [2020-10-27 00:02:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:38,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:38,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:39,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:39,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:41,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:43,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:43,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:02:43,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 00:02:43,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 00:02:43,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:02:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-27 00:02:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:43,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:43,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:43,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:43,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:02:43,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:43,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:43,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:43,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:43,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:43,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:02:43,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:02:43,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 00:02:43,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:43,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:02:43,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:02:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:43,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:43,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:43,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:02:43,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:02:43,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:02:43,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:02:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 00:02:43,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815751704] [2020-10-27 00:02:43,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:43,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:02:43,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741762916] [2020-10-27 00:02:43,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:43,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:43,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:43,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:43,898 INFO L87 Difference]: Start difference. First operand 1379 states and 1813 transitions. Second operand 7 states. [2020-10-27 00:02:50,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:50,451 INFO L93 Difference]: Finished difference Result 3485 states and 4770 transitions. [2020-10-27 00:02:50,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:02:50,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-27 00:02:50,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:50,467 INFO L225 Difference]: With dead ends: 3485 [2020-10-27 00:02:50,467 INFO L226 Difference]: Without dead ends: 2112 [2020-10-27 00:02:50,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:50,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2020-10-27 00:02:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2083. [2020-10-27 00:02:50,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-10-27 00:02:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2688 transitions. [2020-10-27 00:02:50,551 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2688 transitions. Word has length 230 [2020-10-27 00:02:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:50,552 INFO L481 AbstractCegarLoop]: Abstraction has 2083 states and 2688 transitions. [2020-10-27 00:02:50,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:50,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2688 transitions. [2020-10-27 00:02:50,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-27 00:02:50,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:50,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:02:50,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:02:50,560 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:50,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:50,560 INFO L82 PathProgramCache]: Analyzing trace with hash -617732964, now seen corresponding path program 1 times [2020-10-27 00:02:50,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:50,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483565300] [2020-10-27 00:02:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:50,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:52,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:54,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-27 00:02:54,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:02:54,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4123 [2020-10-27 00:02:54,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 00:02:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 298 [2020-10-27 00:02:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:54,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:54,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:55,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:55,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:55,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:55,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:02:55,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:55,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:55,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:55,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:55,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:55,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:55,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:02:55,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:02:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 00:02:55,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:55,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:55,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:55,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:02:55,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:55,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:02:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:55,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:55,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:55,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:55,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:02:55,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:02:55,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-27 00:02:55,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:02:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:02:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 55 proven. 150 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 00:02:56,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483565300] [2020-10-27 00:02:56,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:56,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 00:02:56,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790144315] [2020-10-27 00:02:56,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 00:02:56,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:56,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 00:02:56,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:56,519 INFO L87 Difference]: Start difference. First operand 2083 states and 2688 transitions. Second operand 12 states. [2020-10-27 00:03:00,497 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-27 00:03:01,236 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-27 00:03:01,549 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-27 00:03:02,012 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-10-27 00:03:02,255 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-27 00:03:02,628 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-27 00:03:03,067 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-27 00:03:06,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:06,233 INFO L93 Difference]: Finished difference Result 2532 states and 3295 transitions. [2020-10-27 00:03:06,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 00:03:06,234 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 293 [2020-10-27 00:03:06,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:06,249 INFO L225 Difference]: With dead ends: 2532 [2020-10-27 00:03:06,249 INFO L226 Difference]: Without dead ends: 2529 [2020-10-27 00:03:06,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=238, Invalid=574, Unknown=0, NotChecked=0, Total=812 [2020-10-27 00:03:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2020-10-27 00:03:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2432. [2020-10-27 00:03:06,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2432 states. [2020-10-27 00:03:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3171 transitions. [2020-10-27 00:03:06,329 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3171 transitions. Word has length 293 [2020-10-27 00:03:06,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:06,330 INFO L481 AbstractCegarLoop]: Abstraction has 2432 states and 3171 transitions. [2020-10-27 00:03:06,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 00:03:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3171 transitions. [2020-10-27 00:03:06,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-27 00:03:06,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:06,344 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:06,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:03:06,344 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:06,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:06,345 INFO L82 PathProgramCache]: Analyzing trace with hash -2143767410, now seen corresponding path program 1 times [2020-10-27 00:03:06,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:06,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327555480] [2020-10-27 00:03:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:06,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:10,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:11,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:11,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-27 00:03:11,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:03:11,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 00:03:11,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:11,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 00:03:11,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 00:03:11,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:11,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:11,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:11,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:11,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:03:11,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:11,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:11,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:11,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:11,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:03:11,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:11,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:11,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:11,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:03:11,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:11,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:03:11,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:03:11,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:11,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:03:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:11,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:11,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:03:12,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:03:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-10-27 00:03:12,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:03:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 00:03:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:12,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:12,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:03:12,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:12,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-27 00:03:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:03:12,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:12,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:03:12,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:12,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:03:12,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 332 proven. 183 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2020-10-27 00:03:12,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327555480] [2020-10-27 00:03:12,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:12,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:12,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951255014] [2020-10-27 00:03:12,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:12,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:12,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:12,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:12,995 INFO L87 Difference]: Start difference. First operand 2432 states and 3171 transitions. Second operand 7 states. [2020-10-27 00:03:18,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:18,095 INFO L93 Difference]: Finished difference Result 5016 states and 6580 transitions. [2020-10-27 00:03:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:18,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 480 [2020-10-27 00:03:18,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:18,113 INFO L225 Difference]: With dead ends: 5016 [2020-10-27 00:03:18,113 INFO L226 Difference]: Without dead ends: 2497 [2020-10-27 00:03:18,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:18,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2020-10-27 00:03:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2443. [2020-10-27 00:03:18,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2443 states. [2020-10-27 00:03:18,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 2986 transitions. [2020-10-27 00:03:18,194 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 2986 transitions. Word has length 480 [2020-10-27 00:03:18,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:18,195 INFO L481 AbstractCegarLoop]: Abstraction has 2443 states and 2986 transitions. [2020-10-27 00:03:18,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 2986 transitions. [2020-10-27 00:03:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-27 00:03:18,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:18,237 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:03:18,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:03:18,238 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:18,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:18,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1630314578, now seen corresponding path program 1 times [2020-10-27 00:03:18,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:18,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175334118] [2020-10-27 00:03:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:19,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:23,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:23,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-27 00:03:23,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:23,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 00:03:23,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:03:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:03:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:03:23,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:23,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:23,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:23,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:23,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:23,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:03:23,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:03:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:23,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:23,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:23,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:23,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:23,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:23,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 00:03:23,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:23,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:03:23,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:03:23,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 00:03:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:23,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:23,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:23,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:23,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:23,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:03:23,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:23,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:23,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:03:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:23,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:23,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 00:03:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:23,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:23,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:23,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:23,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:03:23,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:23,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:23,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-27 00:03:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:23,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:23,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:23,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:03:23,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:03:24,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:24,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:24,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:03:24,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:24,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 236 proven. 257 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-27 00:03:24,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175334118] [2020-10-27 00:03:24,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:24,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:24,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370536204] [2020-10-27 00:03:24,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:24,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:24,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:24,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:24,257 INFO L87 Difference]: Start difference. First operand 2443 states and 2986 transitions. Second operand 7 states. [2020-10-27 00:03:30,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:30,522 INFO L93 Difference]: Finished difference Result 7402 states and 9291 transitions. [2020-10-27 00:03:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:30,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 483 [2020-10-27 00:03:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:30,552 INFO L225 Difference]: With dead ends: 7402 [2020-10-27 00:03:30,552 INFO L226 Difference]: Without dead ends: 4965 [2020-10-27 00:03:30,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:30,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4965 states. [2020-10-27 00:03:30,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4965 to 4582. [2020-10-27 00:03:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4582 states. [2020-10-27 00:03:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 5596 transitions. [2020-10-27 00:03:30,719 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 5596 transitions. Word has length 483 [2020-10-27 00:03:30,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:30,719 INFO L481 AbstractCegarLoop]: Abstraction has 4582 states and 5596 transitions. [2020-10-27 00:03:30,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:30,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 5596 transitions. [2020-10-27 00:03:30,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-10-27 00:03:30,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:30,732 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:30,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:03:30,732 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:30,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:30,733 INFO L82 PathProgramCache]: Analyzing trace with hash -2102556087, now seen corresponding path program 1 times [2020-10-27 00:03:30,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:30,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122187258] [2020-10-27 00:03:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:30,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:35,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 563 [2020-10-27 00:03:35,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:35,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 00:03:35,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:03:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:03:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-27 00:03:35,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:36,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:36,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:36,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:36,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:03:36,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:03:36,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:36,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:36,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:36,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:03:36,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-27 00:03:36,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:03:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:36,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 00:03:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:36,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:36,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:36,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:36,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:03:36,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:36,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:36,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:36,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:36,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:36,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 00:03:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:36,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:36,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:03:36,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:03:36,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:03:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 177 proven. 221 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-27 00:03:37,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122187258] [2020-10-27 00:03:37,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:37,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:37,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494321946] [2020-10-27 00:03:37,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:37,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:37,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:37,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:37,121 INFO L87 Difference]: Start difference. First operand 4582 states and 5596 transitions. Second operand 7 states. [2020-10-27 00:03:42,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:42,433 INFO L93 Difference]: Finished difference Result 9225 states and 11348 transitions. [2020-10-27 00:03:42,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:03:42,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 547 [2020-10-27 00:03:42,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:42,461 INFO L225 Difference]: With dead ends: 9225 [2020-10-27 00:03:42,461 INFO L226 Difference]: Without dead ends: 4986 [2020-10-27 00:03:42,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:03:42,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4986 states. [2020-10-27 00:03:42,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4986 to 4931. [2020-10-27 00:03:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4931 states. [2020-10-27 00:03:42,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4931 states to 4931 states and 5977 transitions. [2020-10-27 00:03:42,620 INFO L78 Accepts]: Start accepts. Automaton has 4931 states and 5977 transitions. Word has length 547 [2020-10-27 00:03:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:42,621 INFO L481 AbstractCegarLoop]: Abstraction has 4931 states and 5977 transitions. [2020-10-27 00:03:42,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4931 states and 5977 transitions. [2020-10-27 00:03:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2020-10-27 00:03:42,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:42,636 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:42,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:03:42,636 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:42,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:42,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1890489050, now seen corresponding path program 1 times [2020-10-27 00:03:42,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:42,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909089581] [2020-10-27 00:03:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:42,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:43,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:43,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:46,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:47,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:47,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 684 [2020-10-27 00:03:47,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:47,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-27 00:03:47,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:47,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:47,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:03:47,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:03:47,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:48,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:48,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:48,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:48,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:48,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:03:48,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:48,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:48,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:48,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:48,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:48,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:48,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 00:03:48,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:03:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:48,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:48,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:48,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:48,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 00:03:48,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:03:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:48,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 00:03:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:48,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:48,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:03:48,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:48,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-27 00:03:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:48,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:48,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:03:48,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:48,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:03:48,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:03:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:48,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 370 proven. 227 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-27 00:03:49,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909089581] [2020-10-27 00:03:49,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:49,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:49,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144713052] [2020-10-27 00:03:49,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:49,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:49,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:49,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:49,152 INFO L87 Difference]: Start difference. First operand 4931 states and 5977 transitions. Second operand 7 states. [2020-10-27 00:03:55,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:55,893 INFO L93 Difference]: Finished difference Result 12648 states and 15831 transitions. [2020-10-27 00:03:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:03:55,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 666 [2020-10-27 00:03:55,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:55,937 INFO L225 Difference]: With dead ends: 12648 [2020-10-27 00:03:55,937 INFO L226 Difference]: Without dead ends: 8399 [2020-10-27 00:03:55,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2020-10-27 00:03:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 8366. [2020-10-27 00:03:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8366 states. [2020-10-27 00:03:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8366 states to 8366 states and 9689 transitions. [2020-10-27 00:03:56,209 INFO L78 Accepts]: Start accepts. Automaton has 8366 states and 9689 transitions. Word has length 666 [2020-10-27 00:03:56,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:56,210 INFO L481 AbstractCegarLoop]: Abstraction has 8366 states and 9689 transitions. [2020-10-27 00:03:56,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 8366 states and 9689 transitions. [2020-10-27 00:03:56,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2020-10-27 00:03:56,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:56,228 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:56,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:03:56,229 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:56,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:56,229 INFO L82 PathProgramCache]: Analyzing trace with hash 2028750683, now seen corresponding path program 1 times [2020-10-27 00:03:56,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:56,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990546783] [2020-10-27 00:03:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:56,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:58,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:59,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:59,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:01,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:01,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 794 [2020-10-27 00:04:01,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:04:01,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 00:04:01,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:04:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:04:01,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:01,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:01,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:01,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:01,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:01,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:01,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:04:01,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:01,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:01,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:01,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:01,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:01,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:01,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:01,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:01,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:04:01,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:01,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:01,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:01,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:01,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:01,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:04:01,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:04:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:01,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:04:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:01,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:01,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:01,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 00:04:01,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:04:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 00:04:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:02,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:02,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:02,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:04:02,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:02,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:02,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:04:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:02,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:04:02,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:04:02,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:04:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 539 proven. 227 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2020-10-27 00:04:02,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990546783] [2020-10-27 00:04:02,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:02,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:02,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031332857] [2020-10-27 00:04:02,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:02,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:02,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:02,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:02,851 INFO L87 Difference]: Start difference. First operand 8366 states and 9689 transitions. Second operand 7 states. [2020-10-27 00:04:08,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:08,954 INFO L93 Difference]: Finished difference Result 19127 states and 22165 transitions. [2020-10-27 00:04:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:04:08,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 774 [2020-10-27 00:04:08,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:08,998 INFO L225 Difference]: With dead ends: 19127 [2020-10-27 00:04:08,998 INFO L226 Difference]: Without dead ends: 11443 [2020-10-27 00:04:09,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:04:09,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11443 states. [2020-10-27 00:04:09,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11443 to 11426. [2020-10-27 00:04:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11426 states. [2020-10-27 00:04:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11426 states to 11426 states and 12967 transitions. [2020-10-27 00:04:09,400 INFO L78 Accepts]: Start accepts. Automaton has 11426 states and 12967 transitions. Word has length 774 [2020-10-27 00:04:09,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:09,401 INFO L481 AbstractCegarLoop]: Abstraction has 11426 states and 12967 transitions. [2020-10-27 00:04:09,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:09,402 INFO L276 IsEmpty]: Start isEmpty. Operand 11426 states and 12967 transitions. [2020-10-27 00:04:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2020-10-27 00:04:09,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:09,428 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:04:09,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:04:09,429 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:09,431 INFO L82 PathProgramCache]: Analyzing trace with hash 82832634, now seen corresponding path program 1 times [2020-10-27 00:04:09,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:09,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924951615] [2020-10-27 00:04:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:09,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:10,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:13,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:13,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:14,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:14,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 812 [2020-10-27 00:04:14,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 00:04:14,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 00:04:14,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:14,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:04:14,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:04:14,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-27 00:04:14,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:14,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:14,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:14,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:14,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:14,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:04:14,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:04:14,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:15,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:15,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:15,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-27 00:04:15,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:15,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:15,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:15,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-27 00:04:15,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:15,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:16,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:16,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:16,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:04:16,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-27 00:04:16,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:04:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:16,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 00:04:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:16,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:16,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:16,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:16,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:04:16,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:16,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:16,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:16,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:16,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:16,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-27 00:04:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:16,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:16,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:16,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:04:16,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:04:16,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:04:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:18,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 485 proven. 444 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-10-27 00:04:18,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924951615] [2020-10-27 00:04:18,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:18,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:04:18,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650833587] [2020-10-27 00:04:18,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:04:18,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:18,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:04:18,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:04:18,855 INFO L87 Difference]: Start difference. First operand 11426 states and 12967 transitions. Second operand 8 states. [2020-10-27 00:04:24,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:24,168 INFO L93 Difference]: Finished difference Result 22205 states and 25283 transitions. [2020-10-27 00:04:24,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:04:24,170 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 794 [2020-10-27 00:04:24,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:24,214 INFO L225 Difference]: With dead ends: 22205 [2020-10-27 00:04:24,214 INFO L226 Difference]: Without dead ends: 11461 [2020-10-27 00:04:24,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:04:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11461 states. [2020-10-27 00:04:24,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11461 to 11430. [2020-10-27 00:04:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11430 states. [2020-10-27 00:04:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11430 states to 11430 states and 12965 transitions. [2020-10-27 00:04:24,534 INFO L78 Accepts]: Start accepts. Automaton has 11430 states and 12965 transitions. Word has length 794 [2020-10-27 00:04:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:24,535 INFO L481 AbstractCegarLoop]: Abstraction has 11430 states and 12965 transitions. [2020-10-27 00:04:24,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:04:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 11430 states and 12965 transitions. [2020-10-27 00:04:24,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2020-10-27 00:04:24,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:24,560 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:24,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:04:24,560 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:24,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:24,561 INFO L82 PathProgramCache]: Analyzing trace with hash 429082397, now seen corresponding path program 1 times [2020-10-27 00:04:24,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:24,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313411907] [2020-10-27 00:04:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:25,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:25,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:25,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:27,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:27,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:29,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:29,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 875 [2020-10-27 00:04:29,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 00:04:29,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 00:04:29,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 00:04:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:04:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 493 [2020-10-27 00:04:29,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:30,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:30,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:30,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:30,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:30,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:30,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:04:30,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:30,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:30,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:30,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:04:30,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:30,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:30,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:30,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:30,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:04:30,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-27 00:04:30,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-27 00:04:30,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:04:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:30,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 00:04:31,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:31,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-27 00:04:31,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:04:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-27 00:04:31,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:31,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-27 00:04:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:31,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:04:31,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:31,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-27 00:04:31,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:31,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:31,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:04:31,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-10-27 00:04:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:31,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:31,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:04:31,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:31,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:31,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2020-10-27 00:04:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:04:31,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:04:31,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:04:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1556 backedges. 597 proven. 824 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-27 00:04:33,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313411907] [2020-10-27 00:04:33,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:33,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 00:04:33,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537999023] [2020-10-27 00:04:33,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 00:04:33,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:33,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 00:04:33,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:04:33,322 INFO L87 Difference]: Start difference. First operand 11430 states and 12965 transitions. Second operand 10 states. [2020-10-27 00:04:33,496 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-27 00:04:36,392 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-27 00:04:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:40,229 INFO L93 Difference]: Finished difference Result 22251 states and 25332 transitions. [2020-10-27 00:04:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 00:04:40,231 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 855 [2020-10-27 00:04:40,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:40,275 INFO L225 Difference]: With dead ends: 22251 [2020-10-27 00:04:40,275 INFO L226 Difference]: Without dead ends: 11442 [2020-10-27 00:04:40,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-27 00:04:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11442 states. [2020-10-27 00:04:40,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11442 to 11430. [2020-10-27 00:04:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11430 states. [2020-10-27 00:04:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11430 states to 11430 states and 12963 transitions. [2020-10-27 00:04:40,558 INFO L78 Accepts]: Start accepts. Automaton has 11430 states and 12963 transitions. Word has length 855 [2020-10-27 00:04:40,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:40,559 INFO L481 AbstractCegarLoop]: Abstraction has 11430 states and 12963 transitions. [2020-10-27 00:04:40,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 00:04:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 11430 states and 12963 transitions. [2020-10-27 00:04:40,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2020-10-27 00:04:40,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:40,586 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:40,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:04:40,586 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:40,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:40,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1461101471, now seen corresponding path program 1 times [2020-10-27 00:04:40,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:40,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206609592] [2020-10-27 00:04:40,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:40,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:41,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:43,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:44,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:45,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:45,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 885 [2020-10-27 00:04:45,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:04:45,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 00:04:45,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:45,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-27 00:04:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-27 00:04:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:45,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:45,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:45,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:45,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:04:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:45,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:46,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:46,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:46,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:46,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:46,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:04:46,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:46,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:46,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:46,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:46,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:04:46,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:46,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:04:46,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 00:04:46,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:46,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:04:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:46,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:46,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:46,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:04:46,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:46,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 00:04:46,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:46,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:46,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:46,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 00:04:46,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:46,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-27 00:04:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:46,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:46,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:46,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:04:46,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:46,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2020-10-27 00:04:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:46,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:46,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:46,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:04:46,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:46,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:04:46,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:04:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:46,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 630 proven. 227 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2020-10-27 00:04:47,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206609592] [2020-10-27 00:04:47,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:47,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:47,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180995597] [2020-10-27 00:04:47,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:47,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:47,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:47,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:47,095 INFO L87 Difference]: Start difference. First operand 11430 states and 12963 transitions. Second operand 7 states. [2020-10-27 00:04:52,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:52,656 INFO L93 Difference]: Finished difference Result 24286 states and 28409 transitions. [2020-10-27 00:04:52,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:04:52,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 865 [2020-10-27 00:04:52,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:52,701 INFO L225 Difference]: With dead ends: 24286 [2020-10-27 00:04:52,701 INFO L226 Difference]: Without dead ends: 13538 [2020-10-27 00:04:52,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:04:52,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13538 states. [2020-10-27 00:04:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13538 to 13496. [2020-10-27 00:04:53,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13496 states. [2020-10-27 00:04:53,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13496 states to 13496 states and 15748 transitions. [2020-10-27 00:04:53,135 INFO L78 Accepts]: Start accepts. Automaton has 13496 states and 15748 transitions. Word has length 865 [2020-10-27 00:04:53,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:53,137 INFO L481 AbstractCegarLoop]: Abstraction has 13496 states and 15748 transitions. [2020-10-27 00:04:53,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:53,137 INFO L276 IsEmpty]: Start isEmpty. Operand 13496 states and 15748 transitions. [2020-10-27 00:04:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2020-10-27 00:04:53,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:53,168 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:53,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:04:53,168 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:53,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:53,169 INFO L82 PathProgramCache]: Analyzing trace with hash -2118614081, now seen corresponding path program 1 times [2020-10-27 00:04:53,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:53,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290120148] [2020-10-27 00:04:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:54,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:54,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:55,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:58,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:58,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 954 [2020-10-27 00:04:58,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:04:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 00:04:58,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 484 [2020-10-27 00:04:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 00:04:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:58,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:58,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:58,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:58,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:58,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:58,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:04:58,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:58,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:58,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:58,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:58,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:58,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:58,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:04:58,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:58,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:58,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:58,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:58,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:58,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:58,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:04:58,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:58,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:04:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:58,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:58,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:58,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 00:04:58,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:58,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:04:58,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:58,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:58,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:58,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:04:58,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-10-27 00:04:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:58,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:59,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:59,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:04:59,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:59,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 00:04:59,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:59,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:59,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:59,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:04:59,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:59,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-27 00:04:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:59,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:59,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:59,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:59,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:04:59,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:59,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:59,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2020-10-27 00:04:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:59,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:59,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:59,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:04:59,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:59,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:04:59,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:04:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:59,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 799 [2020-10-27 00:04:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:59,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:59,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:04:59,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:04:59,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:04:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 808 proven. 251 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2020-10-27 00:05:00,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290120148] [2020-10-27 00:05:00,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:00,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:00,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143709151] [2020-10-27 00:05:00,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:00,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:00,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:00,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:00,513 INFO L87 Difference]: Start difference. First operand 13496 states and 15748 transitions. Second operand 7 states. [2020-10-27 00:05:05,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:05,413 INFO L93 Difference]: Finished difference Result 26471 states and 31090 transitions. [2020-10-27 00:05:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:05:05,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 930 [2020-10-27 00:05:05,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:05,457 INFO L225 Difference]: With dead ends: 26471 [2020-10-27 00:05:05,457 INFO L226 Difference]: Without dead ends: 13546 [2020-10-27 00:05:05,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:05:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13546 states. [2020-10-27 00:05:05,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13546 to 13480. [2020-10-27 00:05:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13480 states. [2020-10-27 00:05:05,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13480 states to 13480 states and 15506 transitions. [2020-10-27 00:05:05,768 INFO L78 Accepts]: Start accepts. Automaton has 13480 states and 15506 transitions. Word has length 930 [2020-10-27 00:05:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:05,769 INFO L481 AbstractCegarLoop]: Abstraction has 13480 states and 15506 transitions. [2020-10-27 00:05:05,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 13480 states and 15506 transitions. [2020-10-27 00:05:05,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2020-10-27 00:05:05,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:05,799 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:05:05,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:05:05,800 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:05,803 INFO L82 PathProgramCache]: Analyzing trace with hash 967898236, now seen corresponding path program 1 times [2020-10-27 00:05:05,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:05,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476990111] [2020-10-27 00:05:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:06,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:06,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:11,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:11,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1001 [2020-10-27 00:05:11,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:05:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 00:05:11,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 00:05:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-27 00:05:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 338 [2020-10-27 00:05:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:11,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:11,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:11,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:11,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:11,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:11,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:05:11,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:11,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:11,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:11,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:11,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:11,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:11,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:11,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:11,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:11,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 00:05:11,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-27 00:05:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:11,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:12,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:12,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-27 00:05:12,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:12,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-27 00:05:12,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:05:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:12,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-27 00:05:12,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:12,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-10-27 00:05:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:12,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:12,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:12,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:12,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:05:12,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:05:12,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-27 00:05:12,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:12,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:12,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:12,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:05:12,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 662 [2020-10-27 00:05:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:13,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:13,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:13,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:13,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:05:13,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:05:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:13,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:13,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 777 [2020-10-27 00:05:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:13,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:13,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:05:13,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:13,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:05:13,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:13,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:13,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:05:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:13,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:13,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2020-10-27 00:05:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:13,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:13,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:05:13,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:13,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:05:13,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:05:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:13,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1859 backedges. 808 proven. 576 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2020-10-27 00:05:14,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476990111] [2020-10-27 00:05:14,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:14,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 00:05:14,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363601245] [2020-10-27 00:05:14,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 00:05:14,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:14,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 00:05:14,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:05:14,563 INFO L87 Difference]: Start difference. First operand 13480 states and 15506 transitions. Second operand 9 states. [2020-10-27 00:05:16,719 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-27 00:05:19,462 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-27 00:05:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:22,793 INFO L93 Difference]: Finished difference Result 26411 states and 30492 transitions. [2020-10-27 00:05:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 00:05:22,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 979 [2020-10-27 00:05:22,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:22,831 INFO L225 Difference]: With dead ends: 26411 [2020-10-27 00:05:22,832 INFO L226 Difference]: Without dead ends: 13552 [2020-10-27 00:05:22,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-27 00:05:22,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13552 states. [2020-10-27 00:05:23,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13552 to 13484. [2020-10-27 00:05:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13484 states. [2020-10-27 00:05:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13484 states to 13484 states and 15509 transitions. [2020-10-27 00:05:23,125 INFO L78 Accepts]: Start accepts. Automaton has 13484 states and 15509 transitions. Word has length 979 [2020-10-27 00:05:23,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:23,130 INFO L481 AbstractCegarLoop]: Abstraction has 13484 states and 15509 transitions. [2020-10-27 00:05:23,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 00:05:23,130 INFO L276 IsEmpty]: Start isEmpty. Operand 13484 states and 15509 transitions. [2020-10-27 00:05:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2020-10-27 00:05:23,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:23,164 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:23,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:05:23,164 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:23,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1474382689, now seen corresponding path program 1 times [2020-10-27 00:05:23,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:23,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826383563] [2020-10-27 00:05:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:24,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:28,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:28,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-27 00:05:28,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:05:28,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 00:05:28,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:28,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:28,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:05:28,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:05:28,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:28,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:28,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:28,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:28,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:28,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:05:28,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:28,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:28,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:28,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:28,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:05:28,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:28,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:05:28,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:28,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:28,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:05:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:28,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:28,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:05:28,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:28,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 00:05:28,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:28,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:28,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:28,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:05:28,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:28,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:05:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:29,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:29,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:29,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 00:05:29,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:05:29,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:29,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:05:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:29,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:29,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:05:29,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:29,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:05:29,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:29,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:29,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 00:05:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:29,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-27 00:05:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:29,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:29,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:29,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:05:29,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:05:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:29,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:29,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-27 00:05:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:29,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:29,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:05:29,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:29,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:05:29,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:05:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:29,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:29,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2020-10-27 00:05:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:29,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:29,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:05:29,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:05:29,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:05:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 702 proven. 318 refuted. 0 times theorem prover too weak. 1282 trivial. 0 not checked. [2020-10-27 00:05:29,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826383563] [2020-10-27 00:05:29,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:29,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:29,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664207411] [2020-10-27 00:05:29,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:29,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:29,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:29,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:29,985 INFO L87 Difference]: Start difference. First operand 13484 states and 15509 transitions. Second operand 7 states. [2020-10-27 00:05:36,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:36,994 INFO L93 Difference]: Finished difference Result 28388 states and 33101 transitions. [2020-10-27 00:05:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:05:36,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 986 [2020-10-27 00:05:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:37,044 INFO L225 Difference]: With dead ends: 28388 [2020-10-27 00:05:37,044 INFO L226 Difference]: Without dead ends: 15586 [2020-10-27 00:05:37,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:05:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15586 states. [2020-10-27 00:05:37,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15586 to 15569. [2020-10-27 00:05:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15569 states. [2020-10-27 00:05:37,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15569 states to 15569 states and 18018 transitions. [2020-10-27 00:05:37,387 INFO L78 Accepts]: Start accepts. Automaton has 15569 states and 18018 transitions. Word has length 986 [2020-10-27 00:05:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:37,388 INFO L481 AbstractCegarLoop]: Abstraction has 15569 states and 18018 transitions. [2020-10-27 00:05:37,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:37,389 INFO L276 IsEmpty]: Start isEmpty. Operand 15569 states and 18018 transitions. [2020-10-27 00:05:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2020-10-27 00:05:37,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:37,419 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:37,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:05:37,419 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:37,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:37,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1376581669, now seen corresponding path program 1 times [2020-10-27 00:05:37,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:37,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063028003] [2020-10-27 00:05:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:37,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:38,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking...