/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:01:17,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:01:17,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:01:17,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:01:17,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:01:17,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:01:17,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:01:17,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:01:17,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:01:17,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:01:17,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:01:17,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:01:17,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:01:17,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:01:17,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:01:17,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:01:17,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:01:17,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:01:17,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:01:17,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:01:17,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:01:17,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:01:17,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:01:17,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:01:17,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:01:17,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:01:17,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:01:17,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:01:17,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:01:17,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 05:01:17,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:01:17,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:01:17,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:01:17,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:01:17,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:01:17,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:01:17,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:01:17,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:01:17,548 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:01:17,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:01:17,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:01:17,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:01:17,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:01:17,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:01:17,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:01:17,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:01:17,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:01:17,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:01:17,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:01:17,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:01:17,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:01:17,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:01:17,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:01:17,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:01:17,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:01:17,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:01:17,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:01:17,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:01:17,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:01:17,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:01:17,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:01:17,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:01:17,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:01:17,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:01:17,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:01:17,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:01:18,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:01:18,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:01:18,005 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:01:18,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label54.c [2020-10-29 05:01:18,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c86dd717/55f093cbf7d54081bbd28b0be5abb11b/FLAG2b4a3d31d [2020-10-29 05:01:18,998 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:01:18,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label54.c [2020-10-29 05:01:19,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c86dd717/55f093cbf7d54081bbd28b0be5abb11b/FLAG2b4a3d31d [2020-10-29 05:01:19,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c86dd717/55f093cbf7d54081bbd28b0be5abb11b [2020-10-29 05:01:19,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:01:19,155 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:01:19,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:01:19,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:01:19,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:01:19,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:01:19" (1/1) ... [2020-10-29 05:01:19,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@94035fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:19, skipping insertion in model container [2020-10-29 05:01:19,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:01:19" (1/1) ... [2020-10-29 05:01:19,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:01:19,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:01:20,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:01:20,053 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:01:20,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:01:20,537 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:01:20,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:20 WrapperNode [2020-10-29 05:01:20,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:01:20,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:01:20,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:01:20,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:01:20,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:20" (1/1) ... [2020-10-29 05:01:20,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:20" (1/1) ... [2020-10-29 05:01:20,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:20" (1/1) ... [2020-10-29 05:01:20,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:20" (1/1) ... [2020-10-29 05:01:20,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:20" (1/1) ... [2020-10-29 05:01:20,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:20" (1/1) ... [2020-10-29 05:01:20,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:20" (1/1) ... [2020-10-29 05:01:20,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:01:20,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:01:20,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:01:20,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:01:20,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:01:20,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:01:20,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:01:20,857 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:01:20,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:01:20,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:01:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:01:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:01:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:01:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:01:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:01:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:01:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:01:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:01:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:01:20,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:01:20,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:01:20,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:01:20,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:01:20,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:01:22,956 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:01:22,956 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:01:22,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:01:22 BoogieIcfgContainer [2020-10-29 05:01:22,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:01:22,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:01:22,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:01:22,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:01:22,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:01:19" (1/3) ... [2020-10-29 05:01:22,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70030061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:01:22, skipping insertion in model container [2020-10-29 05:01:22,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:20" (2/3) ... [2020-10-29 05:01:22,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70030061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:01:22, skipping insertion in model container [2020-10-29 05:01:22,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:01:22" (3/3) ... [2020-10-29 05:01:22,968 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label54.c [2020-10-29 05:01:22,980 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:01:22,986 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:01:22,997 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:01:23,025 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:01:23,026 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:01:23,026 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:01:23,026 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:01:23,026 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:01:23,026 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:01:23,026 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:01:23,027 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:01:23,052 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 05:01:23,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 05:01:23,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:23,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:23,073 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:23,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:23,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2032095324, now seen corresponding path program 1 times [2020-10-29 05:01:23,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:23,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055756318] [2020-10-29 05:01:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:23,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:24,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:28,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:28,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 05:01:28,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4635 [2020-10-29 05:01:28,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:28,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:01:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:01:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-29 05:01:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:01:28,686 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:28,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:28,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:28,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:28,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:28,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 05:01:28,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:28,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:28,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:01:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:28,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055756318] [2020-10-29 05:01:28,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:01:28,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:01:28,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7355382] [2020-10-29 05:01:28,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:01:28,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:28,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:01:28,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:01:28,938 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 05:01:29,214 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:01:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:32,917 INFO L93 Difference]: Finished difference Result 867 states and 1520 transitions. [2020-10-29 05:01:32,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:32,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-29 05:01:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:32,939 INFO L225 Difference]: With dead ends: 867 [2020-10-29 05:01:32,940 INFO L226 Difference]: Without dead ends: 475 [2020-10-29 05:01:32,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:32,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-10-29 05:01:33,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 467. [2020-10-29 05:01:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-29 05:01:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 719 transitions. [2020-10-29 05:01:33,089 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 719 transitions. Word has length 173 [2020-10-29 05:01:33,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:33,092 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 719 transitions. [2020-10-29 05:01:33,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:01:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 719 transitions. [2020-10-29 05:01:33,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 05:01:33,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:33,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:33,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:01:33,110 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:33,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:33,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1060454672, now seen corresponding path program 1 times [2020-10-29 05:01:33,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:33,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306308518] [2020-10-29 05:01:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:33,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:33,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:34,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:34,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:34,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:36,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:36,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-29 05:01:36,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:01:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3441 [2020-10-29 05:01:36,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:36,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:36,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:01:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 05:01:36,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:01:37,096 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:37,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:37,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:37,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:37,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:37,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:37,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:01:37,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:37,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:37,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 05:01:37,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:37,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:37,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:37,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:01:37,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:37,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:01:37,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:37,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:01:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:37,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306308518] [2020-10-29 05:01:37,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:37,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:37,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870640405] [2020-10-29 05:01:37,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:37,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:37,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:37,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:37,366 INFO L87 Difference]: Start difference. First operand 467 states and 719 transitions. Second operand 5 states. [2020-10-29 05:01:37,807 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:41,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:41,086 INFO L93 Difference]: Finished difference Result 1355 states and 2106 transitions. [2020-10-29 05:01:41,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:41,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-29 05:01:41,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:41,092 INFO L225 Difference]: With dead ends: 1355 [2020-10-29 05:01:41,093 INFO L226 Difference]: Without dead ends: 471 [2020-10-29 05:01:41,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:41,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-29 05:01:41,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 467. [2020-10-29 05:01:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-29 05:01:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 718 transitions. [2020-10-29 05:01:41,137 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 718 transitions. Word has length 183 [2020-10-29 05:01:41,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:41,137 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 718 transitions. [2020-10-29 05:01:41,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:41,138 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 718 transitions. [2020-10-29 05:01:41,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 05:01:41,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:41,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:41,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:01:41,144 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:41,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:41,146 INFO L82 PathProgramCache]: Analyzing trace with hash 308005938, now seen corresponding path program 1 times [2020-10-29 05:01:41,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:41,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97248497] [2020-10-29 05:01:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:41,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:42,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:44,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:44,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-29 05:01:44,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:01:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3284 [2020-10-29 05:01:44,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:44,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:01:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 05:01:44,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:44,953 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:44,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:44,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:44,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:44,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:44,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:44,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:01:44,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:44,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:44,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:44,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:44,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:44,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:45,114 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:01:45,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:45,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:45,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:45,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:01:45,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 05:01:45,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:45,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:01:45,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:45,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97248497] [2020-10-29 05:01:45,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:45,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:45,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473355218] [2020-10-29 05:01:45,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:45,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:45,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:45,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:45,283 INFO L87 Difference]: Start difference. First operand 467 states and 718 transitions. Second operand 5 states. [2020-10-29 05:01:45,554 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:48,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:48,698 INFO L93 Difference]: Finished difference Result 1365 states and 2132 transitions. [2020-10-29 05:01:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:48,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-29 05:01:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:48,708 INFO L225 Difference]: With dead ends: 1365 [2020-10-29 05:01:48,708 INFO L226 Difference]: Without dead ends: 904 [2020-10-29 05:01:48,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:48,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-10-29 05:01:48,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 887. [2020-10-29 05:01:48,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2020-10-29 05:01:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1350 transitions. [2020-10-29 05:01:48,752 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1350 transitions. Word has length 183 [2020-10-29 05:01:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:48,753 INFO L481 AbstractCegarLoop]: Abstraction has 887 states and 1350 transitions. [2020-10-29 05:01:48,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1350 transitions. [2020-10-29 05:01:48,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 05:01:48,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:48,757 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:48,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:01:48,758 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:48,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:48,758 INFO L82 PathProgramCache]: Analyzing trace with hash -526250789, now seen corresponding path program 1 times [2020-10-29 05:01:48,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:48,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339925266] [2020-10-29 05:01:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:50,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:50,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-29 05:01:50,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:50,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2083 [2020-10-29 05:01:50,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:50,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 05:01:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 05:01:50,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:51,201 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:51,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:51,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:51,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:51,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:51,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:51,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:01:51,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:51,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:51,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:51,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:51,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:51,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:01:51,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:51,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:01:51,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:51,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:01:51,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:51,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339925266] [2020-10-29 05:01:51,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:51,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:51,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428040668] [2020-10-29 05:01:51,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:51,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:51,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:51,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:51,462 INFO L87 Difference]: Start difference. First operand 887 states and 1350 transitions. Second operand 5 states. [2020-10-29 05:01:51,944 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:55,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:55,297 INFO L93 Difference]: Finished difference Result 2621 states and 4058 transitions. [2020-10-29 05:01:55,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:55,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-29 05:01:55,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:55,312 INFO L225 Difference]: With dead ends: 2621 [2020-10-29 05:01:55,312 INFO L226 Difference]: Without dead ends: 1740 [2020-10-29 05:01:55,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:55,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2020-10-29 05:01:55,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1729. [2020-10-29 05:01:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1729 states. [2020-10-29 05:01:55,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2555 transitions. [2020-10-29 05:01:55,402 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2555 transitions. Word has length 190 [2020-10-29 05:01:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:55,403 INFO L481 AbstractCegarLoop]: Abstraction has 1729 states and 2555 transitions. [2020-10-29 05:01:55,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2555 transitions. [2020-10-29 05:01:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-29 05:01:55,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:55,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:55,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:01:55,411 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:55,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:55,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1502626580, now seen corresponding path program 1 times [2020-10-29 05:01:55,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:55,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888445600] [2020-10-29 05:01:55,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:55,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:56,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:57,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:57,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 05:01:57,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2089 [2020-10-29 05:01:57,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:57,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 05:01:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 05:01:57,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:57,922 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:57,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:57,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:57,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:57,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:01:57,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:57,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:57,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:58,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:58,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:58,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:58,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 05:01:58,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:58,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 05:01:58,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:58,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:58,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:58,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:58,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 05:01:58,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:58,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888445600] [2020-10-29 05:01:58,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:58,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:58,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614443697] [2020-10-29 05:01:58,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:58,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:58,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:58,260 INFO L87 Difference]: Start difference. First operand 1729 states and 2555 transitions. Second operand 5 states. [2020-10-29 05:01:58,711 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:02,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:02,083 INFO L93 Difference]: Finished difference Result 5130 states and 7796 transitions. [2020-10-29 05:02:02,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:02:02,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-29 05:02:02,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:02,114 INFO L225 Difference]: With dead ends: 5130 [2020-10-29 05:02:02,114 INFO L226 Difference]: Without dead ends: 3407 [2020-10-29 05:02:02,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:02:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2020-10-29 05:02:02,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3401. [2020-10-29 05:02:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3401 states. [2020-10-29 05:02:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 4693 transitions. [2020-10-29 05:02:02,285 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 4693 transitions. Word has length 205 [2020-10-29 05:02:02,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:02,286 INFO L481 AbstractCegarLoop]: Abstraction has 3401 states and 4693 transitions. [2020-10-29 05:02:02,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:02:02,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 4693 transitions. [2020-10-29 05:02:02,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-29 05:02:02,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:02,298 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:02,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:02:02,299 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:02,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:02,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2007082865, now seen corresponding path program 1 times [2020-10-29 05:02:02,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:02,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823042083] [2020-10-29 05:02:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:02,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:02,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:04,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:07,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:07,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-29 05:02:07,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:02:07,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 05:02:07,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:07,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 05:02:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 05:02:07,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:07,726 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:07,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:07,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:07,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:07,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:07,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:02:07,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:07,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:07,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:07,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:07,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:07,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:07,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:02:07,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:02:07,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:07,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:07,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:07,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 05:02:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:07,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:07,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:07,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:02:07,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:07,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:02:07,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:07,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:02:07,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:02:07,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823042083] [2020-10-29 05:02:07,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:07,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:02:07,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239544886] [2020-10-29 05:02:07,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:02:07,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:07,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:02:07,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:02:07,977 INFO L87 Difference]: Start difference. First operand 3401 states and 4693 transitions. Second operand 5 states. [2020-10-29 05:02:08,239 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:02:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:11,360 INFO L93 Difference]: Finished difference Result 10157 states and 14453 transitions. [2020-10-29 05:02:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:02:11,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-29 05:02:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:11,409 INFO L225 Difference]: With dead ends: 10157 [2020-10-29 05:02:11,410 INFO L226 Difference]: Without dead ends: 6762 [2020-10-29 05:02:11,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:02:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2020-10-29 05:02:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6549. [2020-10-29 05:02:11,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6549 states. [2020-10-29 05:02:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6549 states to 6549 states and 8878 transitions. [2020-10-29 05:02:11,707 INFO L78 Accepts]: Start accepts. Automaton has 6549 states and 8878 transitions. Word has length 206 [2020-10-29 05:02:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:11,707 INFO L481 AbstractCegarLoop]: Abstraction has 6549 states and 8878 transitions. [2020-10-29 05:02:11,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:02:11,707 INFO L276 IsEmpty]: Start isEmpty. Operand 6549 states and 8878 transitions. [2020-10-29 05:02:11,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 05:02:11,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:11,732 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:11,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:02:11,732 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:11,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:11,734 INFO L82 PathProgramCache]: Analyzing trace with hash -28232180, now seen corresponding path program 1 times [2020-10-29 05:02:11,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:11,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854926018] [2020-10-29 05:02:11,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:14,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:16,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:16,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-29 05:02:16,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:02:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4590 [2020-10-29 05:02:16,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:16,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 05:02:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 05:02:16,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:16,803 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:16,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:16,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:16,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:16,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:16,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:16,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:02:16,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:16,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:16,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:17,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:17,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:02:17,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:17,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 05:02:17,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:17,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 05:02:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:17,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 05:02:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:17,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:17,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:17,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:17,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 05:02:17,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:17,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:17,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:02:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:02:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 91 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:02:17,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854926018] [2020-10-29 05:02:17,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:17,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:02:17,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767367158] [2020-10-29 05:02:17,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:02:17,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:17,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:02:17,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:02:17,304 INFO L87 Difference]: Start difference. First operand 6549 states and 8878 transitions. Second operand 6 states. [2020-10-29 05:02:17,545 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:20,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:20,994 INFO L93 Difference]: Finished difference Result 18578 states and 25983 transitions. [2020-10-29 05:02:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 05:02:20,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 245 [2020-10-29 05:02:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:21,063 INFO L225 Difference]: With dead ends: 18578 [2020-10-29 05:02:21,064 INFO L226 Difference]: Without dead ends: 12035 [2020-10-29 05:02:21,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:21,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12035 states. [2020-10-29 05:02:21,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12035 to 11800. [2020-10-29 05:02:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11800 states. [2020-10-29 05:02:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11800 states to 11800 states and 16462 transitions. [2020-10-29 05:02:21,553 INFO L78 Accepts]: Start accepts. Automaton has 11800 states and 16462 transitions. Word has length 245 [2020-10-29 05:02:21,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:21,553 INFO L481 AbstractCegarLoop]: Abstraction has 11800 states and 16462 transitions. [2020-10-29 05:02:21,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:02:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 11800 states and 16462 transitions. [2020-10-29 05:02:21,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 05:02:21,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:21,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:21,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:02:21,593 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:21,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:21,594 INFO L82 PathProgramCache]: Analyzing trace with hash 644194511, now seen corresponding path program 1 times [2020-10-29 05:02:21,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:21,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314982541] [2020-10-29 05:02:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:22,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:24,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:24,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 05:02:24,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:02:24,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2354 [2020-10-29 05:02:24,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:24,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 05:02:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 05:02:24,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:24,364 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:24,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:24,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:24,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:24,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:24,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:02:24,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:24,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:24,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:24,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:24,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:24,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:24,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:24,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:24,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:24,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:02:24,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:24,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 05:02:24,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:24,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:24,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 05:02:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:02:24,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314982541] [2020-10-29 05:02:24,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:24,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:02:24,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789062363] [2020-10-29 05:02:24,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:02:24,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:24,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:02:24,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:02:24,903 INFO L87 Difference]: Start difference. First operand 11800 states and 16462 transitions. Second operand 5 states. [2020-10-29 05:02:25,368 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:29,025 INFO L93 Difference]: Finished difference Result 31361 states and 44659 transitions. [2020-10-29 05:02:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:02:29,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-29 05:02:29,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:29,133 INFO L225 Difference]: With dead ends: 31361 [2020-10-29 05:02:29,133 INFO L226 Difference]: Without dead ends: 19567 [2020-10-29 05:02:29,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:02:29,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19567 states. [2020-10-29 05:02:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19567 to 19537. [2020-10-29 05:02:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19537 states. [2020-10-29 05:02:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19537 states to 19537 states and 27723 transitions. [2020-10-29 05:02:29,946 INFO L78 Accepts]: Start accepts. Automaton has 19537 states and 27723 transitions. Word has length 251 [2020-10-29 05:02:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:29,946 INFO L481 AbstractCegarLoop]: Abstraction has 19537 states and 27723 transitions. [2020-10-29 05:02:29,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:02:29,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19537 states and 27723 transitions. [2020-10-29 05:02:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 05:02:30,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:30,019 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:30,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:02:30,020 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:30,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:30,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1736621689, now seen corresponding path program 1 times [2020-10-29 05:02:30,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:30,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535001109] [2020-10-29 05:02:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:30,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:30,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:35,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:35,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 05:02:35,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:02:35,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-29 05:02:35,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:35,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:02:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:02:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 05:02:35,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:35,472 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:35,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:35,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:35,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:35,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:35,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:02:35,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:35,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:35,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:02:35,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:35,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:35,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:35,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:02:35,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 05:02:35,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:35,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:02:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 05:02:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:35,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:35,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:35,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:02:35,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:35,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 05:02:35,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:35,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:35,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:35,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:35,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:02:35,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:35,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 05:02:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:36,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:36,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:36,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-29 05:02:36,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:36,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:02:36,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 76 proven. 35 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 05:02:36,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535001109] [2020-10-29 05:02:36,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:36,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:36,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900599555] [2020-10-29 05:02:36,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:02:36,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:36,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:02:36,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:02:36,370 INFO L87 Difference]: Start difference. First operand 19537 states and 27723 transitions. Second operand 8 states. [2020-10-29 05:02:36,626 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:37,356 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:40,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:40,941 INFO L93 Difference]: Finished difference Result 49674 states and 73524 transitions. [2020-10-29 05:02:40,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:02:40,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 256 [2020-10-29 05:02:40,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:41,160 INFO L225 Difference]: With dead ends: 49674 [2020-10-29 05:02:41,160 INFO L226 Difference]: Without dead ends: 30561 [2020-10-29 05:02:41,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:02:41,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30561 states. [2020-10-29 05:02:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30561 to 30332. [2020-10-29 05:02:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30332 states. [2020-10-29 05:02:42,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30332 states to 30332 states and 41830 transitions. [2020-10-29 05:02:42,428 INFO L78 Accepts]: Start accepts. Automaton has 30332 states and 41830 transitions. Word has length 256 [2020-10-29 05:02:42,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:42,429 INFO L481 AbstractCegarLoop]: Abstraction has 30332 states and 41830 transitions. [2020-10-29 05:02:42,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:02:42,429 INFO L276 IsEmpty]: Start isEmpty. Operand 30332 states and 41830 transitions. [2020-10-29 05:02:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-29 05:02:42,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:42,525 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:02:42,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:02:42,525 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:42,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:42,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1735210251, now seen corresponding path program 1 times [2020-10-29 05:02:42,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:42,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592016149] [2020-10-29 05:02:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:42,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:44,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:46,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:46,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-29 05:02:46,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:02:46,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3646 [2020-10-29 05:02:46,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:46,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:46,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-29 05:02:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 05:02:46,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:46,647 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:46,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:46,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:46,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:46,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:46,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:46,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:02:46,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:46,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:46,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:46,799 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:02:46,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:46,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:46,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:46,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:02:46,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:46,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:02:46,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:46,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:46,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:02:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:46,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:46,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:46,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 05:02:46,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:46,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 05:02:46,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:46,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 05:02:46,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 05:02:47,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592016149] [2020-10-29 05:02:47,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:47,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:02:47,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161798148] [2020-10-29 05:02:47,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:02:47,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:47,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:02:47,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:02:47,139 INFO L87 Difference]: Start difference. First operand 30332 states and 41830 transitions. Second operand 5 states. [2020-10-29 05:02:47,762 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:50,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:50,834 INFO L93 Difference]: Finished difference Result 63598 states and 88334 transitions. [2020-10-29 05:02:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:02:50,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-29 05:02:50,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:50,998 INFO L225 Difference]: With dead ends: 63598 [2020-10-29 05:02:50,998 INFO L226 Difference]: Without dead ends: 33690 [2020-10-29 05:02:51,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:02:51,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33690 states. [2020-10-29 05:02:52,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33690 to 33268. [2020-10-29 05:02:52,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33268 states. [2020-10-29 05:02:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33268 states to 33268 states and 45634 transitions. [2020-10-29 05:02:52,528 INFO L78 Accepts]: Start accepts. Automaton has 33268 states and 45634 transitions. Word has length 311 [2020-10-29 05:02:52,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:52,529 INFO L481 AbstractCegarLoop]: Abstraction has 33268 states and 45634 transitions. [2020-10-29 05:02:52,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:02:52,530 INFO L276 IsEmpty]: Start isEmpty. Operand 33268 states and 45634 transitions. [2020-10-29 05:02:52,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-29 05:02:52,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:52,686 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:52,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:02:52,687 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:52,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:52,687 INFO L82 PathProgramCache]: Analyzing trace with hash 481194202, now seen corresponding path program 1 times [2020-10-29 05:02:52,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:52,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369155585] [2020-10-29 05:02:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:52,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:53,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:53,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:53,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:54,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:56,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:57,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:57,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-29 05:02:57,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 05:02:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 05:02:57,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:57,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 05:02:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:02:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 05:02:57,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:58,260 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:58,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:58,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:58,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:58,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:58,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:58,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:02:58,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:58,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:58,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:58,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:58,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:02:58,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:58,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:58,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:58,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:58,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:02:58,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:58,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 05:02:58,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:58,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 05:02:58,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:58,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:02:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:58,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:58,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:58,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:02:58,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 05:02:58,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:58,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 05:02:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:58,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:02:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:58,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:58,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:02:58,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 05:02:58,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:58,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 05:02:58,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:58,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 05:02:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:58,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:58,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:02:58,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:58,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 05:02:58,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:58,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:58,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:02:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:02:58,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:02:59,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-29 05:02:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:59,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:59,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:02:59,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:59,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 05:02:59,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:59,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:59,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:02:59,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:59,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-29 05:02:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:59,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:59,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:59,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:59,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 05:02:59,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:59,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:59,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:59,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:02:59,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:59,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 199 proven. 161 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-29 05:02:59,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369155585] [2020-10-29 05:02:59,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:59,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 05:02:59,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657336468] [2020-10-29 05:02:59,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 05:02:59,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:59,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 05:02:59,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:02:59,565 INFO L87 Difference]: Start difference. First operand 33268 states and 45634 transitions. Second operand 12 states. [2020-10-29 05:02:59,831 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:03:00,523 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 163 [2020-10-29 05:03:01,096 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:03:05,878 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 162 [2020-10-29 05:03:08,385 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 05:03:11,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:11,630 INFO L93 Difference]: Finished difference Result 125886 states and 206081 transitions. [2020-10-29 05:03:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 05:03:11,631 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 324 [2020-10-29 05:03:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:12,811 INFO L225 Difference]: With dead ends: 125886 [2020-10-29 05:03:12,812 INFO L226 Difference]: Without dead ends: 93042 [2020-10-29 05:03:12,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=245, Invalid=685, Unknown=0, NotChecked=0, Total=930 [2020-10-29 05:03:13,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93042 states. [2020-10-29 05:03:17,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93042 to 86796. [2020-10-29 05:03:17,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86796 states. [2020-10-29 05:03:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86796 states to 86796 states and 120273 transitions. [2020-10-29 05:03:18,452 INFO L78 Accepts]: Start accepts. Automaton has 86796 states and 120273 transitions. Word has length 324 [2020-10-29 05:03:18,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:18,453 INFO L481 AbstractCegarLoop]: Abstraction has 86796 states and 120273 transitions. [2020-10-29 05:03:18,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 05:03:18,453 INFO L276 IsEmpty]: Start isEmpty. Operand 86796 states and 120273 transitions. [2020-10-29 05:03:18,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-29 05:03:18,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:18,642 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:18,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 05:03:18,642 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:18,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:18,643 INFO L82 PathProgramCache]: Analyzing trace with hash -262117975, now seen corresponding path program 1 times [2020-10-29 05:03:18,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:18,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051149869] [2020-10-29 05:03:18,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:18,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:19,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:21,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:21,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-29 05:03:21,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:03:21,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2834 [2020-10-29 05:03:21,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:21,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 05:03:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 05:03:21,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:21,911 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:21,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:21,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:21,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:21,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:21,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:03:21,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:21,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:21,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:22,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:22,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:03:22,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:22,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:03:22,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:22,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:03:22,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:22,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:03:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:22,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:22,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 05:03:22,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:22,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-29 05:03:22,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:22,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:22,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:22,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:22,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 05:03:22,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:03:22,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051149869] [2020-10-29 05:03:22,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:22,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:03:22,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338029128] [2020-10-29 05:03:22,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:03:22,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:22,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:03:22,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:03:22,892 INFO L87 Difference]: Start difference. First operand 86796 states and 120273 transitions. Second operand 7 states. [2020-10-29 05:03:23,158 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:03:25,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:25,792 INFO L93 Difference]: Finished difference Result 155008 states and 215536 transitions. [2020-10-29 05:03:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:03:25,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-29 05:03:25,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:26,352 INFO L225 Difference]: With dead ends: 155008 [2020-10-29 05:03:26,352 INFO L226 Difference]: Without dead ends: 68843 [2020-10-29 05:03:26,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:03:26,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68843 states. [2020-10-29 05:03:28,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68843 to 68833. [2020-10-29 05:03:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68833 states. [2020-10-29 05:03:29,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68833 states to 68833 states and 93050 transitions. [2020-10-29 05:03:29,103 INFO L78 Accepts]: Start accepts. Automaton has 68833 states and 93050 transitions. Word has length 326 [2020-10-29 05:03:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:29,103 INFO L481 AbstractCegarLoop]: Abstraction has 68833 states and 93050 transitions. [2020-10-29 05:03:29,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:03:29,104 INFO L276 IsEmpty]: Start isEmpty. Operand 68833 states and 93050 transitions. [2020-10-29 05:03:29,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-29 05:03:29,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:29,250 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:03:29,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 05:03:29,251 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:29,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:29,251 INFO L82 PathProgramCache]: Analyzing trace with hash -338574513, now seen corresponding path program 1 times [2020-10-29 05:03:29,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:29,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481910392] [2020-10-29 05:03:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:29,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:30,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:33,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:34,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:34,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-29 05:03:34,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:03:34,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 05:03:34,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:34,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 05:03:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 05:03:34,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:35,048 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:35,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:35,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:35,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:35,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:35,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:03:35,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:35,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:35,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:35,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:35,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:35,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:03:35,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:03:35,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:35,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:03:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:35,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:03:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:35,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:35,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 05:03:35,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:35,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-29 05:03:35,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:35,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 05:03:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:35,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-29 05:03:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:35,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:35,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:35,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:03:35,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:35,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 05:03:35,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:35,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:35,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:35,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:03:35,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:35,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:35,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-29 05:03:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:35,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:35,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:35,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:03:35,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:03:35,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:35,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 05:03:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:35,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:35,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-29 05:03:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:35,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:35,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:35,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:03:35,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 05:03:35,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:35,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:03:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:35,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 253 proven. 76 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-29 05:03:36,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481910392] [2020-10-29 05:03:36,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:36,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:03:36,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169800672] [2020-10-29 05:03:36,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:03:36,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:36,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:03:36,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:03:36,160 INFO L87 Difference]: Start difference. First operand 68833 states and 93050 transitions. Second operand 7 states. [2020-10-29 05:03:36,537 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:03:36,923 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:03:42,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:42,346 INFO L93 Difference]: Finished difference Result 132146 states and 188150 transitions. [2020-10-29 05:03:42,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:03:42,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2020-10-29 05:03:42,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:42,648 INFO L225 Difference]: With dead ends: 132146 [2020-10-29 05:03:42,648 INFO L226 Difference]: Without dead ends: 65423 [2020-10-29 05:03:42,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:03:42,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65423 states. [2020-10-29 05:03:44,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65423 to 63618. [2020-10-29 05:03:44,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63618 states. [2020-10-29 05:03:45,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63618 states to 63618 states and 82106 transitions. [2020-10-29 05:03:45,254 INFO L78 Accepts]: Start accepts. Automaton has 63618 states and 82106 transitions. Word has length 411 [2020-10-29 05:03:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:45,254 INFO L481 AbstractCegarLoop]: Abstraction has 63618 states and 82106 transitions. [2020-10-29 05:03:45,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:03:45,255 INFO L276 IsEmpty]: Start isEmpty. Operand 63618 states and 82106 transitions. [2020-10-29 05:03:45,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-29 05:03:45,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:45,385 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:45,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 05:03:45,386 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:45,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:45,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1656086534, now seen corresponding path program 1 times [2020-10-29 05:03:45,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:45,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465496274] [2020-10-29 05:03:45,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:45,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:46,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:46,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:50,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:50,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-29 05:03:50,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 05:03:50,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 05:03:50,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:50,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:03:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:03:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 05:03:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:50,842 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:50,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:50,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:50,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:50,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:50,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:03:50,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:50,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:50,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:50,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:50,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:03:50,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:50,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:51,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:51,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:51,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 05:03:51,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-29 05:03:51,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:51,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 05:03:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:51,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-29 05:03:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:51,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:51,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:51,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 05:03:51,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:51,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:03:51,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:51,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:51,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:51,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 05:03:51,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:51,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:51,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-29 05:03:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:51,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:51,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:03:51,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:03:51,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:51,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:03:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:51,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:51,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-29 05:03:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:51,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:51,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:51,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:03:51,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:51,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 05:03:51,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:51,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:03:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:51,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:03:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:51,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:51,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:03:51,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:03:51,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:51,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 05:03:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:51,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:51,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-29 05:03:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:51,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:51,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:51,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:03:51,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 05:03:51,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:51,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:03:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:51,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 240 proven. 99 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-10-29 05:03:52,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465496274] [2020-10-29 05:03:52,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:52,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:03:52,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758584148] [2020-10-29 05:03:52,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:03:52,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:52,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:03:52,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:03:52,168 INFO L87 Difference]: Start difference. First operand 63618 states and 82106 transitions. Second operand 7 states. [2020-10-29 05:03:52,456 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:03:54,811 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:03:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:56,472 INFO L93 Difference]: Finished difference Result 124137 states and 160504 transitions. [2020-10-29 05:03:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:03:56,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 431 [2020-10-29 05:03:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:56,674 INFO L225 Difference]: With dead ends: 124137 [2020-10-29 05:03:56,675 INFO L226 Difference]: Without dead ends: 71801 [2020-10-29 05:03:56,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:03:56,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71801 states. [2020-10-29 05:03:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71801 to 71698. [2020-10-29 05:03:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71698 states. [2020-10-29 05:03:59,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71698 states to 71698 states and 92171 transitions. [2020-10-29 05:03:59,185 INFO L78 Accepts]: Start accepts. Automaton has 71698 states and 92171 transitions. Word has length 431 [2020-10-29 05:03:59,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:59,186 INFO L481 AbstractCegarLoop]: Abstraction has 71698 states and 92171 transitions. [2020-10-29 05:03:59,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:03:59,186 INFO L276 IsEmpty]: Start isEmpty. Operand 71698 states and 92171 transitions. [2020-10-29 05:03:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-29 05:03:59,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:59,342 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:59,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 05:03:59,342 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:59,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:59,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1355838906, now seen corresponding path program 1 times [2020-10-29 05:03:59,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:59,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803036608] [2020-10-29 05:03:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:00,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:04,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:04,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 458 [2020-10-29 05:04:04,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:04:04,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 05:04:04,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:04,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:04:04,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-29 05:04:04,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 05:04:04,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:04,734 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:04:04,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:04,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:04,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:04,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:04,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:04:04,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:04,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:04,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:04,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:04,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:04,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:04:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:04,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:04,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:04,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 05:04:04,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 05:04:04,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:04,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 05:04:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:05,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 05:04:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:05,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:05,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 05:04:05,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:05,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 05:04:05,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:05,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:04:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:04:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 05:04:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:05,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-29 05:04:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:05,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:05,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:04:05,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:05,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 05:04:05,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:05,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:04:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:04:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:04:05,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:05,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-29 05:04:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:05,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:05,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:05,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:04:05,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:05,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:04:05,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:05,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:04:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:04:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:04:05,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:05,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-29 05:04:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:05,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:05,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:04:05,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 05:04:05,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:05,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:04:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 350 proven. 84 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 05:04:05,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803036608] [2020-10-29 05:04:05,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:04:05,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:04:05,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360233394] [2020-10-29 05:04:05,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:04:05,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:05,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:04:05,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:04:05,807 INFO L87 Difference]: Start difference. First operand 71698 states and 92171 transitions. Second operand 8 states. [2020-10-29 05:04:06,190 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:04:06,608 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:04:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:04:12,408 INFO L93 Difference]: Finished difference Result 140171 states and 185811 transitions. [2020-10-29 05:04:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:04:12,409 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 438 [2020-10-29 05:04:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:04:12,411 INFO L225 Difference]: With dead ends: 140171 [2020-10-29 05:04:12,411 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 05:04:12,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:04:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 05:04:12,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 05:04:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 05:04:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 05:04:12,634 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 438 [2020-10-29 05:04:12,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:04:12,634 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 05:04:12,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:04:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 05:04:12,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 05:04:12,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 05:04:12,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 05:04:12,815 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 176 [2020-10-29 05:04:12,947 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 176 [2020-10-29 05:04:13,397 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 05:04:14,835 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 05:04:15,261 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 174