/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/array-examples/standard_copy3_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:34:12,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:34:12,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:34:12,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:34:12,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:34:12,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:34:12,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:34:12,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:34:12,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:34:12,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:34:12,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:34:12,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:34:12,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:34:12,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:34:12,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:34:12,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:34:12,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:34:12,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:34:12,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:34:12,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:34:12,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:34:12,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:34:12,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:34:12,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:34:13,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:34:13,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:34:13,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:34:13,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:34:13,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:34:13,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:34:13,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:34:13,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:34:13,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:34:13,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:34:13,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:34:13,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:34:13,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:34:13,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:34:13,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:34:13,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:34:13,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:34:13,027 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 03:34:13,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:34:13,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:34:13,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:34:13,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:34:13,080 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:34:13,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:34:13,080 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:34:13,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:34:13,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:34:13,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:34:13,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:34:13,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:34:13,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:34:13,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:34:13,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:34:13,083 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:34:13,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:34:13,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:34:13,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:34:13,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:34:13,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:34:13,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:34:13,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:34:13,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:34:13,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:34:13,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:34:13,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:34:13,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:34:13,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:34:13,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:34:13,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:34:13,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:34:13,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:34:13,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:34:13,522 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:34:13,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy3_ground-1.i [2020-10-29 03:34:13,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90b1e6c16/b6d25797733d42b39a8134dd4f1b54ae/FLAGebdba33a9 [2020-10-29 03:34:14,358 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:34:14,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy3_ground-1.i [2020-10-29 03:34:14,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90b1e6c16/b6d25797733d42b39a8134dd4f1b54ae/FLAGebdba33a9 [2020-10-29 03:34:14,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90b1e6c16/b6d25797733d42b39a8134dd4f1b54ae [2020-10-29 03:34:14,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:34:14,705 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:34:14,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:34:14,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:34:14,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:34:14,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:34:14" (1/1) ... [2020-10-29 03:34:14,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40761f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:14, skipping insertion in model container [2020-10-29 03:34:14,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:34:14" (1/1) ... [2020-10-29 03:34:14,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:34:14,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:34:14,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:34:14,929 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:34:14,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:34:14,970 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:34:14,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:14 WrapperNode [2020-10-29 03:34:14,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:34:14,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:34:14,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:34:14,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:34:14,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:14" (1/1) ... [2020-10-29 03:34:14,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:14" (1/1) ... [2020-10-29 03:34:14,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:14" (1/1) ... [2020-10-29 03:34:14,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:14" (1/1) ... [2020-10-29 03:34:15,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:14" (1/1) ... [2020-10-29 03:34:15,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:14" (1/1) ... [2020-10-29 03:34:15,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:14" (1/1) ... [2020-10-29 03:34:15,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:34:15,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:34:15,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:34:15,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:34:15,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:34:15,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:34:15,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:34:15,095 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:34:15,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:34:15,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:34:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:34:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:34:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:34:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:34:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:34:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:34:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:34:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:34:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:34:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:34:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:34:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:34:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:34:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:34:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:34:15,499 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:34:15,500 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-29 03:34:15,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:34:15 BoogieIcfgContainer [2020-10-29 03:34:15,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:34:15,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:34:15,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:34:15,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:34:15,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:34:14" (1/3) ... [2020-10-29 03:34:15,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d59c18f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:34:15, skipping insertion in model container [2020-10-29 03:34:15,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:14" (2/3) ... [2020-10-29 03:34:15,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d59c18f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:34:15, skipping insertion in model container [2020-10-29 03:34:15,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:34:15" (3/3) ... [2020-10-29 03:34:15,512 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copy3_ground-1.i [2020-10-29 03:34:15,526 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:34:15,531 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:34:15,547 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:34:15,579 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:34:15,579 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:34:15,579 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:34:15,579 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:34:15,580 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:34:15,580 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:34:15,580 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:34:15,580 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:34:15,599 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-29 03:34:15,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 03:34:15,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:15,607 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] [2020-10-29 03:34:15,607 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:15,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:15,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2093384956, now seen corresponding path program 1 times [2020-10-29 03:34:15,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:15,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359010156] [2020-10-29 03:34:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:15,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:16,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:16,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:16,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 03:34:16,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:34:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-29 03:34:16,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:16,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:16,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:34:16,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:34:16,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 03:34:16,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:16,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:16,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:16,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:16,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:16,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:34:16,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:16,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:16,453 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 03:34:16,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359010156] [2020-10-29 03:34:16,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:34:16,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:34:16,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197920241] [2020-10-29 03:34:16,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:34:16,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:16,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:34:16,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:34:16,481 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-10-29 03:34:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:16,642 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2020-10-29 03:34:16,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:34:16,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-29 03:34:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:16,653 INFO L225 Difference]: With dead ends: 71 [2020-10-29 03:34:16,653 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:34:16,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:34:16,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:34:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-29 03:34:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:34:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 03:34:16,706 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2020-10-29 03:34:16,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:16,707 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 03:34:16,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:34:16,707 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 03:34:16,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:34:16,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:16,709 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] [2020-10-29 03:34:16,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:34:16,709 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:16,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:16,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1785823484, now seen corresponding path program 1 times [2020-10-29 03:34:16,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:16,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200367737] [2020-10-29 03:34:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:16,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:16,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:17,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:20,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:20,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 03:34:20,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:34:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4050 [2020-10-29 03:34:20,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:20,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:34:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:34:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:34:20,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:21,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:21,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:21,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:21,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:21,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:21,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:34:21,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:21,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:21,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200367737] [2020-10-29 03:34:21,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:21,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:34:21,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116755856] [2020-10-29 03:34:21,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:34:21,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:21,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:34:21,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:34:21,250 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 13 states. [2020-10-29 03:34:21,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:21,835 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-29 03:34:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:34:21,836 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-10-29 03:34:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:21,841 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:34:21,842 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:34:21,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:34:21,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:34:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-10-29 03:34:21,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 03:34:21,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-10-29 03:34:21,885 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 27 [2020-10-29 03:34:21,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:21,886 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-10-29 03:34:21,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:34:21,886 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-10-29 03:34:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 03:34:21,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:21,888 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:34:21,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:34:21,888 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:21,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:21,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1480439262, now seen corresponding path program 2 times [2020-10-29 03:34:21,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:21,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764737633] [2020-10-29 03:34:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:21,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:21,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:21,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:25,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:25,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:34:25,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:34:25,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4028 [2020-10-29 03:34:25,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:25,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:34:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:34:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:26,387 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-29 03:34:26,668 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2020-10-29 03:34:26,872 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-29 03:34:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:27,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:27,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:27,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:27,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:27,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:34:27,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:27,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:27,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:27,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764737633] [2020-10-29 03:34:27,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:27,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:34:27,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397836555] [2020-10-29 03:34:27,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:34:27,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:27,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:34:27,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:34:27,164 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 15 states. [2020-10-29 03:34:27,570 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-29 03:34:27,890 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2020-10-29 03:34:28,046 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-29 03:34:28,258 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-10-29 03:34:28,456 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-29 03:34:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:28,761 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-10-29 03:34:28,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:34:28,762 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-10-29 03:34:28,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:28,766 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:34:28,766 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:34:28,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:34:28,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:34:28,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2020-10-29 03:34:28,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:34:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 03:34:28,783 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 29 [2020-10-29 03:34:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:28,784 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 03:34:28,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:34:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 03:34:28,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:34:28,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:28,785 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:28,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:34:28,786 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:28,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:28,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1468170402, now seen corresponding path program 1 times [2020-10-29 03:34:28,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:28,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967334968] [2020-10-29 03:34:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:28,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:28,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:28,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:30,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:30,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 03:34:30,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:34:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1478 [2020-10-29 03:34:30,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:30,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:34:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:34:30,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:34:30,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 03:34:30,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:30,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:30,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:30,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:30,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:34:30,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:30,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:30,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:30,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 03:34:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:30,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:30,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:30,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:30,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:30,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:30,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:34:30,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967334968] [2020-10-29 03:34:30,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:30,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:34:30,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489037394] [2020-10-29 03:34:30,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:34:30,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:30,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:34:30,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:34:30,354 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-10-29 03:34:30,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:30,510 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2020-10-29 03:34:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:34:30,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-29 03:34:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:30,512 INFO L225 Difference]: With dead ends: 75 [2020-10-29 03:34:30,512 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:34:30,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:34:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:34:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-29 03:34:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:34:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-29 03:34:30,537 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 35 [2020-10-29 03:34:30,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:30,538 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-29 03:34:30,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:34:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-29 03:34:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 03:34:30,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:30,542 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:30,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:34:30,542 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:30,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1544984824, now seen corresponding path program 2 times [2020-10-29 03:34:30,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:30,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189579705] [2020-10-29 03:34:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:30,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:30,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:30,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:32,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:35,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:35,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 03:34:35,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:34:35,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:34:35,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:35,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:34:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:34:35,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:36,172 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-29 03:34:36,330 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-10-29 03:34:36,603 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-29 03:34:37,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:37,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:37,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:37,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:37,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:34:37,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:37,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:37,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:34:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:37,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:37,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:37,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:37,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:37,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:34:37,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:37,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:37,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:37,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189579705] [2020-10-29 03:34:37,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:37,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:34:37,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793087200] [2020-10-29 03:34:37,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:34:37,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:37,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:34:37,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:34:37,262 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 19 states. [2020-10-29 03:34:37,745 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-10-29 03:34:38,047 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-29 03:34:38,307 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-10-29 03:34:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:39,108 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-10-29 03:34:39,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:34:39,110 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2020-10-29 03:34:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:39,111 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:34:39,111 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:34:39,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:34:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:34:39,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-10-29 03:34:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:34:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-29 03:34:39,126 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 41 [2020-10-29 03:34:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:39,127 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-29 03:34:39,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:34:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-29 03:34:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:34:39,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:39,128 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:39,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:34:39,128 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:39,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:39,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1729520978, now seen corresponding path program 3 times [2020-10-29 03:34:39,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:39,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210456003] [2020-10-29 03:34:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:44,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:44,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:34:44,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:34:44,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4959 [2020-10-29 03:34:44,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:44,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:44,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:34:44,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:34:44,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:44,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:44,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:44,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:44,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:44,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:44,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:44,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:34:44,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:44,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:44,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:44,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:44,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:44,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:34:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:44,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:44,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:44,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:44,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:44,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:44,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:44,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:34:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:44,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:44,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:44,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:44,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:44,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:44,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:44,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 03:34:44,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210456003] [2020-10-29 03:34:44,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:44,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:34:44,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463276407] [2020-10-29 03:34:44,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:34:44,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:44,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:34:44,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:34:44,193 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 6 states. [2020-10-29 03:34:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:44,344 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2020-10-29 03:34:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:34:44,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-10-29 03:34:44,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:44,347 INFO L225 Difference]: With dead ends: 101 [2020-10-29 03:34:44,347 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:34:44,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:34:44,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:34:44,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-10-29 03:34:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:34:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-29 03:34:44,375 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 49 [2020-10-29 03:34:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:44,375 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-29 03:34:44,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:34:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-29 03:34:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 03:34:44,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:44,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:44,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:34:44,382 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:44,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:44,384 INFO L82 PathProgramCache]: Analyzing trace with hash 171010412, now seen corresponding path program 4 times [2020-10-29 03:34:44,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:44,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834726298] [2020-10-29 03:34:44,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:44,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:44,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:44,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:49,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 03:34:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:34:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:34:49,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:49,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:34:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:34:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:34:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:49,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:49,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:49,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:49,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:49,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:49,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:34:49,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:49,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:49,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:49,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:49,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:49,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:49,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:34:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:49,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:49,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:49,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:49,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:49,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:49,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:49,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:34:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:49,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:49,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:49,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:49,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:49,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:49,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:49,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:49,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-29 03:34:49,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834726298] [2020-10-29 03:34:49,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:49,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:34:49,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750078342] [2020-10-29 03:34:49,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:34:49,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:49,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:34:49,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:34:49,554 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 7 states. [2020-10-29 03:34:49,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:49,744 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2020-10-29 03:34:49,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:34:49,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-29 03:34:49,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:49,746 INFO L225 Difference]: With dead ends: 111 [2020-10-29 03:34:49,747 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:34:49,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:34:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:34:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-10-29 03:34:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:34:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-29 03:34:49,779 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 55 [2020-10-29 03:34:49,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:49,782 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-29 03:34:49,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:34:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-29 03:34:49,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 03:34:49,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:49,784 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:49,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:34:49,784 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:49,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:49,785 INFO L82 PathProgramCache]: Analyzing trace with hash -2057883130, now seen corresponding path program 5 times [2020-10-29 03:34:49,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:49,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569618459] [2020-10-29 03:34:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:49,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:49,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:49,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:54,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:54,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:34:54,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:34:54,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 03:34:54,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:54,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:34:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:34:54,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:34:54,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:34:54,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:54,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:54,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:54,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:54,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:54,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:34:54,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:54,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:54,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:54,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:34:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:54,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:54,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:54,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:54,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:54,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:54,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:54,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:54,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:54,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:34:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:54,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:54,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:54,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:34:54,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:54,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:54,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:34:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:54,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-29 03:34:54,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569618459] [2020-10-29 03:34:54,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:54,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:34:54,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796838852] [2020-10-29 03:34:54,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:34:54,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:54,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:34:54,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:34:54,945 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 8 states. [2020-10-29 03:34:55,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:55,099 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2020-10-29 03:34:55,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:34:55,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-29 03:34:55,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:55,101 INFO L225 Difference]: With dead ends: 121 [2020-10-29 03:34:55,101 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:34:55,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:34:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:34:55,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-10-29 03:34:55,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:34:55,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-29 03:34:55,130 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 61 [2020-10-29 03:34:55,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:55,130 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-29 03:34:55,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:34:55,131 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-29 03:34:55,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:34:55,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:55,133 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:55,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:34:55,134 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:55,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:55,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1550164192, now seen corresponding path program 6 times [2020-10-29 03:34:55,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:55,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581919552] [2020-10-29 03:34:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:55,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:00,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 03:35:00,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:00,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:35:00,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:00,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:35:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:35:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:00,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:00,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:00,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:00,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:00,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:00,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:00,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:35:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:00,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:00,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:00,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:00,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:00,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:00,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:00,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:00,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:35:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:00,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:00,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:00,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:00,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-29 03:35:00,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581919552] [2020-10-29 03:35:00,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:00,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:35:00,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144211842] [2020-10-29 03:35:00,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:35:00,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:00,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:35:00,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:35:00,276 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 9 states. [2020-10-29 03:35:00,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:00,488 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2020-10-29 03:35:00,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:35:00,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-29 03:35:00,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:00,490 INFO L225 Difference]: With dead ends: 131 [2020-10-29 03:35:00,490 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:35:00,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:35:00,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:35:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-10-29 03:35:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:35:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-29 03:35:00,522 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 67 [2020-10-29 03:35:00,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:00,522 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-29 03:35:00,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:35:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-29 03:35:00,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 03:35:00,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:00,523 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:00,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:35:00,524 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:00,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:00,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1785360198, now seen corresponding path program 7 times [2020-10-29 03:35:00,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:00,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905579013] [2020-10-29 03:35:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:00,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:05,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 03:35:05,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:05,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 03:35:05,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:05,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:05,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:35:05,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:35:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:35:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:05,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:05,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:05,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:05,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:05,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:05,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:05,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:05,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:05,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:05,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:05,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:05,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:35:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:05,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:05,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:05,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:05,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:05,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:05,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:05,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:05,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:05,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:05,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:35:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:05,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:05,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:05,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:05,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:05,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:05,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 03:35:05,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905579013] [2020-10-29 03:35:05,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:05,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:35:05,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343658437] [2020-10-29 03:35:05,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:35:05,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:05,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:35:05,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:35:05,705 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 10 states. [2020-10-29 03:35:05,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:05,935 INFO L93 Difference]: Finished difference Result 141 states and 150 transitions. [2020-10-29 03:35:05,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:35:05,936 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-29 03:35:05,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:05,937 INFO L225 Difference]: With dead ends: 141 [2020-10-29 03:35:05,937 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:35:05,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:35:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:35:05,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2020-10-29 03:35:05,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:35:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-29 03:35:05,955 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 73 [2020-10-29 03:35:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:05,955 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-29 03:35:05,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:35:05,956 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-29 03:35:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 03:35:05,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:05,957 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:05,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:35:05,957 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:05,958 INFO L82 PathProgramCache]: Analyzing trace with hash 728458964, now seen corresponding path program 8 times [2020-10-29 03:35:05,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:05,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139650917] [2020-10-29 03:35:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:05,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:06,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:10,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:10,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 03:35:10,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:10,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:35:10,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:10,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:35:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:35:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:35:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:11,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:11,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:11,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:11,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:11,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:11,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:35:11,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:11,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:11,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:11,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:35:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:11,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:11,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:11,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:11,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:11,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:11,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:11,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:11,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 03:35:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:11,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:11,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:11,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:11,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:11,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:11,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:11,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 03:35:11,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139650917] [2020-10-29 03:35:11,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:11,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:35:11,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414396967] [2020-10-29 03:35:11,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:35:11,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:11,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:35:11,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:35:11,124 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 11 states. [2020-10-29 03:35:11,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:11,404 INFO L93 Difference]: Finished difference Result 151 states and 160 transitions. [2020-10-29 03:35:11,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:35:11,405 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-29 03:35:11,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:11,406 INFO L225 Difference]: With dead ends: 151 [2020-10-29 03:35:11,407 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:35:11,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:35:11,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:35:11,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2020-10-29 03:35:11,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:35:11,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-29 03:35:11,431 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 79 [2020-10-29 03:35:11,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:11,434 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-29 03:35:11,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:35:11,434 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-29 03:35:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 03:35:11,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:11,445 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:11,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:35:11,445 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:11,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:11,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1899593362, now seen corresponding path program 9 times [2020-10-29 03:35:11,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:11,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620864558] [2020-10-29 03:35:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:11,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:11,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:11,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:16,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:16,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 03:35:16,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:16,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 03:35:16,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:16,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:16,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:35:16,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 03:35:16,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:35:16,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:16,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:16,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:16,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:16,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:16,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:16,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:16,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:16,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:35:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:16,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:16,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:16,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:16,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:16,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:16,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:16,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:16,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:35:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:16,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:16,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:16,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:16,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:16,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:16,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:16,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:16,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 4 proven. 64 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-29 03:35:16,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620864558] [2020-10-29 03:35:16,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:16,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:35:16,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612840382] [2020-10-29 03:35:16,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:35:16,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:16,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:35:16,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:35:16,656 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 12 states. [2020-10-29 03:35:17,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:17,001 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2020-10-29 03:35:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:35:17,002 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-10-29 03:35:17,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:17,003 INFO L225 Difference]: With dead ends: 161 [2020-10-29 03:35:17,003 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:35:17,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:35:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:35:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-10-29 03:35:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:35:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-29 03:35:17,026 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 85 [2020-10-29 03:35:17,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:17,026 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-29 03:35:17,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:35:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-29 03:35:17,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 03:35:17,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:17,028 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:17,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:35:17,028 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:17,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:17,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2094629000, now seen corresponding path program 10 times [2020-10-29 03:35:17,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:17,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873479634] [2020-10-29 03:35:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:17,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:17,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:17,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:22,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:22,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 03:35:22,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:22,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 03:35:22,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:22,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:35:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:35:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:35:22,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:22,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:22,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:22,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:22,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:22,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:22,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:22,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:22,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:22,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:22,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 03:35:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:22,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:22,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:22,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:22,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:22,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:22,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:22,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:22,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:22,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:22,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:22,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:22,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 03:35:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:22,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:22,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:22,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:22,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:22,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:22,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 4 proven. 81 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-10-29 03:35:22,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873479634] [2020-10-29 03:35:22,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:22,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:35:22,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256084630] [2020-10-29 03:35:22,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:35:22,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:22,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:35:22,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:35:22,276 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 13 states. [2020-10-29 03:35:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:22,570 INFO L93 Difference]: Finished difference Result 171 states and 180 transitions. [2020-10-29 03:35:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:35:22,570 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-10-29 03:35:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:22,571 INFO L225 Difference]: With dead ends: 171 [2020-10-29 03:35:22,572 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:35:22,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:35:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:35:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2020-10-29 03:35:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 03:35:22,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-29 03:35:22,599 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 91 [2020-10-29 03:35:22,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:22,599 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-29 03:35:22,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:35:22,599 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-29 03:35:22,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 03:35:22,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:22,601 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:22,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:35:22,601 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:22,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:22,602 INFO L82 PathProgramCache]: Analyzing trace with hash 6226978, now seen corresponding path program 11 times [2020-10-29 03:35:22,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:22,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449040280] [2020-10-29 03:35:22,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:22,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:22,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:22,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:22,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:27,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:27,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 03:35:27,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-29 03:35:27,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:27,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:35:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 03:35:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:35:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:27,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:27,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:27,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:27,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:27,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:27,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:27,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:27,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:27,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:35:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:27,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:27,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:27,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:27,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:27,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:27,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:27,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:35:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:27,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:27,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:27,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:27,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:27,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:27,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-29 03:35:27,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449040280] [2020-10-29 03:35:27,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:27,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:35:27,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341003853] [2020-10-29 03:35:27,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:35:27,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:27,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:35:27,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:35:27,906 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 14 states. [2020-10-29 03:35:28,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:28,189 INFO L93 Difference]: Finished difference Result 181 states and 190 transitions. [2020-10-29 03:35:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:35:28,190 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 97 [2020-10-29 03:35:28,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:28,191 INFO L225 Difference]: With dead ends: 181 [2020-10-29 03:35:28,191 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:35:28,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:35:28,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:35:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2020-10-29 03:35:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 03:35:28,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-29 03:35:28,211 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 97 [2020-10-29 03:35:28,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:28,211 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-29 03:35:28,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:35:28,211 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-29 03:35:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 03:35:28,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:28,213 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:28,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:35:28,213 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:28,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:28,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1415992260, now seen corresponding path program 12 times [2020-10-29 03:35:28,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:28,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286019508] [2020-10-29 03:35:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:28,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:28,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:33,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:33,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 03:35:33,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:33,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 03:35:33,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:33,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:35:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:35:33,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:33,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:33,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:33,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:33,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:33,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:33,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:33,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:33,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 03:35:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:33,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:33,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:33,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:33,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:33,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:33,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:33,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:33,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:33,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 03:35:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:33,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:33,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:33,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:33,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:33,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 4 proven. 121 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-29 03:35:33,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286019508] [2020-10-29 03:35:33,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:33,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:35:33,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871841434] [2020-10-29 03:35:33,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:35:33,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:33,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:35:33,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:35:33,471 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 15 states. [2020-10-29 03:35:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:33,788 INFO L93 Difference]: Finished difference Result 191 states and 200 transitions. [2020-10-29 03:35:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:35:33,789 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 103 [2020-10-29 03:35:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:33,790 INFO L225 Difference]: With dead ends: 191 [2020-10-29 03:35:33,790 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:35:33,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:35:33,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:35:33,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2020-10-29 03:35:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:35:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-29 03:35:33,813 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 103 [2020-10-29 03:35:33,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:33,814 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-29 03:35:33,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:35:33,815 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-29 03:35:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 03:35:33,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:33,816 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:33,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:35:33,816 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:33,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:33,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1381243094, now seen corresponding path program 13 times [2020-10-29 03:35:33,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:33,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112494273] [2020-10-29 03:35:33,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:33,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:33,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:38,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:38,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 03:35:38,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:38,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 03:35:38,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:38,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:35:38,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:38,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:35:38,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:39,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:39,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:39,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:39,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:39,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:39,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:39,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:39,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:39,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:39,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:39,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:39,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:35:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:39,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:39,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:39,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:39,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:39,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:39,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:39,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:39,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:39,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:39,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:35:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:39,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:39,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:39,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:39,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:39,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:39,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 4 proven. 144 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2020-10-29 03:35:39,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112494273] [2020-10-29 03:35:39,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:39,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:35:39,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958646870] [2020-10-29 03:35:39,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:35:39,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:39,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:35:39,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:35:39,092 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 16 states. [2020-10-29 03:35:39,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:39,427 INFO L93 Difference]: Finished difference Result 201 states and 210 transitions. [2020-10-29 03:35:39,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:35:39,428 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 109 [2020-10-29 03:35:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:39,429 INFO L225 Difference]: With dead ends: 201 [2020-10-29 03:35:39,429 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 03:35:39,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:35:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 03:35:39,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2020-10-29 03:35:39,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 03:35:39,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2020-10-29 03:35:39,447 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 109 [2020-10-29 03:35:39,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:39,447 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2020-10-29 03:35:39,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:35:39,447 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2020-10-29 03:35:39,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 03:35:39,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:39,449 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:39,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:35:39,449 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:39,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:39,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1138813424, now seen corresponding path program 14 times [2020-10-29 03:35:39,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:39,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127192299] [2020-10-29 03:35:39,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:39,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:39,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:44,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 03:35:44,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:44,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 03:35:44,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:44,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:44,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:35:44,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:35:44,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:35:44,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:44,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:44,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:44,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:44,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:44,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:44,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:44,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:44,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:44,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:44,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:44,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:44,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 03:35:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:44,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:44,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:44,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:44,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:44,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:44,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:44,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:44,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 03:35:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:44,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:44,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:44,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:44,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:44,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:44,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:44,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:44,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:44,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 4 proven. 169 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-29 03:35:44,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127192299] [2020-10-29 03:35:44,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:44,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:35:44,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058533098] [2020-10-29 03:35:44,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:35:44,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:44,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:35:44,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:35:44,785 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand 17 states. [2020-10-29 03:35:45,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:45,165 INFO L93 Difference]: Finished difference Result 211 states and 220 transitions. [2020-10-29 03:35:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:35:45,166 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 115 [2020-10-29 03:35:45,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:45,168 INFO L225 Difference]: With dead ends: 211 [2020-10-29 03:35:45,168 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 03:35:45,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:35:45,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 03:35:45,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2020-10-29 03:35:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 03:35:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2020-10-29 03:35:45,185 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 115 [2020-10-29 03:35:45,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:45,185 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2020-10-29 03:35:45,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:35:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2020-10-29 03:35:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 03:35:45,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:45,187 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:45,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:35:45,187 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:45,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:45,187 INFO L82 PathProgramCache]: Analyzing trace with hash 85639050, now seen corresponding path program 15 times [2020-10-29 03:35:45,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:45,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005664522] [2020-10-29 03:35:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:45,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:45,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:50,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:50,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 03:35:50,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:50,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 03:35:50,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:50,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:35:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 03:35:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:35:50,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:50,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:50,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:50,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:50,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:50,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:50,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:50,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:35:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:50,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:50,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:50,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:50,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:50,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:50,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:50,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:50,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:50,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 03:35:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:50,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:50,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:50,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:50,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:50,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:50,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:50,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:50,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:50,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:50,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 4 proven. 196 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2020-10-29 03:35:50,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005664522] [2020-10-29 03:35:50,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:50,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:35:50,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832122197] [2020-10-29 03:35:50,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:35:50,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:50,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:35:50,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:35:50,510 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 18 states. [2020-10-29 03:35:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:50,936 INFO L93 Difference]: Finished difference Result 221 states and 230 transitions. [2020-10-29 03:35:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:35:50,938 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 121 [2020-10-29 03:35:50,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:50,940 INFO L225 Difference]: With dead ends: 221 [2020-10-29 03:35:50,940 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:35:50,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:35:50,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:35:50,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2020-10-29 03:35:50,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-29 03:35:50,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2020-10-29 03:35:50,959 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 121 [2020-10-29 03:35:50,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:50,959 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2020-10-29 03:35:50,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:35:50,960 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2020-10-29 03:35:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 03:35:50,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:50,961 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:50,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:35:50,961 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:50,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:50,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1973143132, now seen corresponding path program 16 times [2020-10-29 03:35:50,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:50,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208088016] [2020-10-29 03:35:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:50,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:51,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:52,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:56,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:56,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 03:35:56,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:56,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-29 03:35:56,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:56,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:35:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:35:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:35:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:56,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:56,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:56,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:56,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:56,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:56,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:56,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:56,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:56,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:56,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:56,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:56,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:56,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 03:35:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:56,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:56,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:56,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:56,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:56,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:56,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:56,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:56,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:56,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:56,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 03:35:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:56,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:56,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:56,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:56,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:56,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:56,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:56,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:56,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 4 proven. 225 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2020-10-29 03:35:56,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208088016] [2020-10-29 03:35:56,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:56,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:35:56,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437998775] [2020-10-29 03:35:56,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:35:56,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:56,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:35:56,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:35:56,346 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand 19 states. [2020-10-29 03:35:56,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:56,793 INFO L93 Difference]: Finished difference Result 231 states and 240 transitions. [2020-10-29 03:35:56,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:35:56,793 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 127 [2020-10-29 03:35:56,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:56,795 INFO L225 Difference]: With dead ends: 231 [2020-10-29 03:35:56,795 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 03:35:56,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:35:56,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 03:35:56,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2020-10-29 03:35:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-29 03:35:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2020-10-29 03:35:56,825 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 127 [2020-10-29 03:35:56,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:56,825 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2020-10-29 03:35:56,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:35:56,825 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2020-10-29 03:35:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 03:35:56,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:56,826 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:56,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:35:56,826 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:56,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:56,827 INFO L82 PathProgramCache]: Analyzing trace with hash -240650178, now seen corresponding path program 17 times [2020-10-29 03:35:56,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:56,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574963062] [2020-10-29 03:35:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:56,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:59,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:02,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:02,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 03:36:02,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:02,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5213 [2020-10-29 03:36:02,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:02,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:02,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:36:02,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 03:36:02,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:36:02,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:02,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:02,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:02,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:02,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:02,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:02,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:02,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:02,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:02,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:02,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:36:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:02,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:02,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:02,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:02,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:36:02,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:02,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:36:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:02,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:02,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:02,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:02,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:02,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:02,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:02,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 4 proven. 256 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2020-10-29 03:36:02,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574963062] [2020-10-29 03:36:02,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:02,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:36:02,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791989464] [2020-10-29 03:36:02,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:36:02,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:02,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:36:02,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:36:02,387 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand 20 states. [2020-10-29 03:36:02,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:02,854 INFO L93 Difference]: Finished difference Result 241 states and 250 transitions. [2020-10-29 03:36:02,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:36:02,855 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 133 [2020-10-29 03:36:02,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:02,857 INFO L225 Difference]: With dead ends: 241 [2020-10-29 03:36:02,857 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 03:36:02,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:36:02,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 03:36:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2020-10-29 03:36:02,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 03:36:02,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2020-10-29 03:36:02,874 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 133 [2020-10-29 03:36:02,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:02,875 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2020-10-29 03:36:02,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:36:02,875 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2020-10-29 03:36:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 03:36:02,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:02,876 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:02,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:36:02,876 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:02,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:02,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1135043752, now seen corresponding path program 18 times [2020-10-29 03:36:02,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:02,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690508360] [2020-10-29 03:36:02,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:02,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:02,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:04,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:07,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:07,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 03:36:07,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-29 03:36:07,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:07,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:36:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 03:36:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:36:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:08,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:08,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:08,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:08,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:08,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:08,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:08,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:08,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:08,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:08,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:08,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:08,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 03:36:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:08,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:08,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:08,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:08,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:08,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:08,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:08,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:08,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:08,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-29 03:36:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:08,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:08,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:08,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:08,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:36:08,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:08,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:08,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 4 proven. 289 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-29 03:36:08,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690508360] [2020-10-29 03:36:08,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:08,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:36:08,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536832841] [2020-10-29 03:36:08,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:36:08,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:08,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:36:08,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:36:08,343 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand 21 states. [2020-10-29 03:36:08,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:08,821 INFO L93 Difference]: Finished difference Result 251 states and 260 transitions. [2020-10-29 03:36:08,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:36:08,822 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 139 [2020-10-29 03:36:08,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:08,824 INFO L225 Difference]: With dead ends: 251 [2020-10-29 03:36:08,824 INFO L226 Difference]: Without dead ends: 152 [2020-10-29 03:36:08,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:36:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-29 03:36:08,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 149. [2020-10-29 03:36:08,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:36:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions. [2020-10-29 03:36:08,844 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 139 [2020-10-29 03:36:08,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:08,845 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions. [2020-10-29 03:36:08,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:36:08,845 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions. [2020-10-29 03:36:08,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 03:36:08,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:08,846 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:08,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:36:08,846 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:08,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:08,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1989098766, now seen corresponding path program 19 times [2020-10-29 03:36:08,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:08,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938416148] [2020-10-29 03:36:08,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:08,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:08,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:13,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:14,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:14,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 03:36:14,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:14,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-10-29 03:36:14,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:14,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:14,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:36:14,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:36:14,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:36:14,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:14,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:14,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:14,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:14,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:14,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:14,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:14,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:14,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:14,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:14,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:14,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:36:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:14,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:14,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:14,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:14,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:14,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:36:14,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:14,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:14,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:14,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 03:36:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:14,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:14,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:14,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:36:14,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:14,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:14,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:14,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:14,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:14,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 4 proven. 324 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2020-10-29 03:36:14,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938416148] [2020-10-29 03:36:14,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:14,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:36:14,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790344883] [2020-10-29 03:36:14,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:36:14,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:14,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:36:14,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:36:14,422 INFO L87 Difference]: Start difference. First operand 149 states and 153 transitions. Second operand 22 states. [2020-10-29 03:36:14,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:14,855 INFO L93 Difference]: Finished difference Result 261 states and 270 transitions. [2020-10-29 03:36:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:36:14,856 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 145 [2020-10-29 03:36:14,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:14,858 INFO L225 Difference]: With dead ends: 261 [2020-10-29 03:36:14,858 INFO L226 Difference]: Without dead ends: 158 [2020-10-29 03:36:14,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:36:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-29 03:36:14,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2020-10-29 03:36:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-29 03:36:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 159 transitions. [2020-10-29 03:36:14,880 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 159 transitions. Word has length 145 [2020-10-29 03:36:14,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:14,881 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 159 transitions. [2020-10-29 03:36:14,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:36:14,881 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 159 transitions. [2020-10-29 03:36:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 03:36:14,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:14,882 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:14,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:36:14,882 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:14,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:14,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1332940556, now seen corresponding path program 20 times [2020-10-29 03:36:14,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:14,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792931887] [2020-10-29 03:36:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:14,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:17,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:19,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:19,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 03:36:19,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:19,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-29 03:36:19,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:19,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:36:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-29 03:36:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:36:19,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:20,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:20,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:20,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:20,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:20,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:20,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:20,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:20,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:20,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:20,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:20,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:20,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-29 03:36:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:20,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:20,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:20,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:20,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:36:20,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:20,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:20,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:20,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 03:36:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:20,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:20,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:20,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:20,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:36:20,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:20,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:20,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:20,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:20,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:20,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 4 proven. 361 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2020-10-29 03:36:20,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792931887] [2020-10-29 03:36:20,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:20,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:36:20,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578726879] [2020-10-29 03:36:20,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:36:20,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:20,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:36:20,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:36:20,423 INFO L87 Difference]: Start difference. First operand 155 states and 159 transitions. Second operand 23 states. [2020-10-29 03:36:20,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:20,922 INFO L93 Difference]: Finished difference Result 271 states and 280 transitions. [2020-10-29 03:36:20,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:36:20,922 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 151 [2020-10-29 03:36:20,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:20,925 INFO L225 Difference]: With dead ends: 271 [2020-10-29 03:36:20,925 INFO L226 Difference]: Without dead ends: 164 [2020-10-29 03:36:20,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:36:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-29 03:36:20,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2020-10-29 03:36:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-29 03:36:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 165 transitions. [2020-10-29 03:36:20,951 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 165 transitions. Word has length 151 [2020-10-29 03:36:20,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:20,952 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 165 transitions. [2020-10-29 03:36:20,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:36:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 165 transitions. [2020-10-29 03:36:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 03:36:20,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:20,953 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:20,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:36:20,954 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:20,954 INFO L82 PathProgramCache]: Analyzing trace with hash 376053670, now seen corresponding path program 21 times [2020-10-29 03:36:20,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:20,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842185087] [2020-10-29 03:36:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:20,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:21,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:26,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 03:36:26,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:36:26,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-29 03:36:26,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:26,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:36:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:36:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:36:26,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:26,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:26,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:26,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:26,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:26,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:26,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:26,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:26,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 03:36:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:26,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:26,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:26,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:26,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:36:26,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:26,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:26,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-29 03:36:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:26,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:26,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:26,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:26,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:26,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:26,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 4 proven. 400 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2020-10-29 03:36:26,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842185087] [2020-10-29 03:36:26,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:26,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:36:26,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602845301] [2020-10-29 03:36:26,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:36:26,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:26,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:36:26,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:36:26,557 INFO L87 Difference]: Start difference. First operand 161 states and 165 transitions. Second operand 24 states. [2020-10-29 03:36:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:27,114 INFO L93 Difference]: Finished difference Result 281 states and 290 transitions. [2020-10-29 03:36:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:36:27,114 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 157 [2020-10-29 03:36:27,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:27,116 INFO L225 Difference]: With dead ends: 281 [2020-10-29 03:36:27,116 INFO L226 Difference]: Without dead ends: 170 [2020-10-29 03:36:27,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:36:27,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-29 03:36:27,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-10-29 03:36:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-29 03:36:27,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2020-10-29 03:36:27,144 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 157 [2020-10-29 03:36:27,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:27,144 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2020-10-29 03:36:27,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:36:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2020-10-29 03:36:27,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 03:36:27,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:27,146 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:27,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:36:27,146 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:27,147 INFO L82 PathProgramCache]: Analyzing trace with hash 837326016, now seen corresponding path program 22 times [2020-10-29 03:36:27,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:27,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518468195] [2020-10-29 03:36:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:27,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:27,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:32,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:32,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 03:36:32,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:32,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 03:36:32,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:32,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:36:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 03:36:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:36:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:32,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:32,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:32,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:32,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:32,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:32,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:32,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:32,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:32,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-29 03:36:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:32,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:32,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:32,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:32,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:32,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:32,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:32,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 03:36:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:32,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:32,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:32,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:32,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:32,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:36:32,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:32,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:32,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1339 backedges. 4 proven. 441 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2020-10-29 03:36:32,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518468195] [2020-10-29 03:36:32,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:32,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:36:32,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141216517] [2020-10-29 03:36:32,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:36:32,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:32,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:36:32,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:36:32,694 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand 25 states. [2020-10-29 03:36:33,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:33,244 INFO L93 Difference]: Finished difference Result 291 states and 300 transitions. [2020-10-29 03:36:33,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:36:33,245 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 163 [2020-10-29 03:36:33,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:33,247 INFO L225 Difference]: With dead ends: 291 [2020-10-29 03:36:33,247 INFO L226 Difference]: Without dead ends: 176 [2020-10-29 03:36:33,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:36:33,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-29 03:36:33,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2020-10-29 03:36:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-29 03:36:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2020-10-29 03:36:33,272 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 163 [2020-10-29 03:36:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:33,272 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2020-10-29 03:36:33,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:36:33,272 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2020-10-29 03:36:33,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 03:36:33,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:33,274 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:33,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:36:33,274 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:33,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:33,274 INFO L82 PathProgramCache]: Analyzing trace with hash -83292582, now seen corresponding path program 23 times [2020-10-29 03:36:33,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:33,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698661963] [2020-10-29 03:36:33,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:33,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:33,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:38,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:38,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 03:36:38,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:36:38,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5457 [2020-10-29 03:36:38,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:38,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:36:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 03:36:38,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:36:38,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:39,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:39,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:39,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:39,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:39,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:39,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:39,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:39,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 03:36:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:39,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:39,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:39,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:39,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:39,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:39,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:39,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:39,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:39,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:39,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 03:36:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:39,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:39,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:39,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:39,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:39,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:39,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:39,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1468 backedges. 4 proven. 484 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2020-10-29 03:36:39,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698661963] [2020-10-29 03:36:39,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:39,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:36:39,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406109138] [2020-10-29 03:36:39,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:36:39,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:39,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:36:39,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:36:39,383 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 26 states. [2020-10-29 03:36:39,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:39,894 INFO L93 Difference]: Finished difference Result 301 states and 310 transitions. [2020-10-29 03:36:39,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:36:39,894 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 169 [2020-10-29 03:36:39,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:39,896 INFO L225 Difference]: With dead ends: 301 [2020-10-29 03:36:39,896 INFO L226 Difference]: Without dead ends: 182 [2020-10-29 03:36:39,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:36:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-29 03:36:39,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2020-10-29 03:36:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-29 03:36:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 183 transitions. [2020-10-29 03:36:39,926 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 183 transitions. Word has length 169 [2020-10-29 03:36:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:39,926 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 183 transitions. [2020-10-29 03:36:39,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:36:39,927 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 183 transitions. [2020-10-29 03:36:39,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-29 03:36:39,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:39,929 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:39,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:36:39,929 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:39,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:39,929 INFO L82 PathProgramCache]: Analyzing trace with hash 174992500, now seen corresponding path program 24 times [2020-10-29 03:36:39,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:39,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356859760] [2020-10-29 03:36:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:45,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:45,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 03:36:45,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:36:45,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5346 [2020-10-29 03:36:45,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:45,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:45,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:36:45,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 03:36:45,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:36:45,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:45,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:45,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:45,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:45,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:45,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:45,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:45,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 03:36:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:45,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:45,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:45,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:45,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:45,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:45,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:45,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:45,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-29 03:36:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:45,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:45,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:45,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:45,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:45,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:45,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:45,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1603 backedges. 4 proven. 529 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2020-10-29 03:36:45,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356859760] [2020-10-29 03:36:45,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:45,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:36:45,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233167228] [2020-10-29 03:36:45,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:36:45,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:45,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:36:45,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:36:45,865 INFO L87 Difference]: Start difference. First operand 179 states and 183 transitions. Second operand 27 states. [2020-10-29 03:36:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:46,470 INFO L93 Difference]: Finished difference Result 311 states and 320 transitions. [2020-10-29 03:36:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:36:46,472 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 175 [2020-10-29 03:36:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:46,473 INFO L225 Difference]: With dead ends: 311 [2020-10-29 03:36:46,474 INFO L226 Difference]: Without dead ends: 188 [2020-10-29 03:36:46,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:36:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-29 03:36:46,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 185. [2020-10-29 03:36:46,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-29 03:36:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2020-10-29 03:36:46,499 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 175 [2020-10-29 03:36:46,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:46,499 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 189 transitions. [2020-10-29 03:36:46,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:36:46,499 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 189 transitions. [2020-10-29 03:36:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-29 03:36:46,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:46,501 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:46,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:36:46,501 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:46,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:46,502 INFO L82 PathProgramCache]: Analyzing trace with hash -230519026, now seen corresponding path program 25 times [2020-10-29 03:36:46,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:46,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028034478] [2020-10-29 03:36:46,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:46,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:51,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:51,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-29 03:36:51,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:36:51,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-29 03:36:51,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:51,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:36:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 03:36:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:36:51,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:52,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:52,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:52,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:52,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:52,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:52,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:52,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:52,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:52,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:52,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:52,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:52,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-29 03:36:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:52,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:52,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:52,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:52,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:52,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:52,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:52,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:52,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:52,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:52,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:52,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-29 03:36:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:52,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:52,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:52,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:52,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:52,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:52,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:52,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 4 proven. 576 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2020-10-29 03:36:52,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028034478] [2020-10-29 03:36:52,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:52,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:36:52,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022735621] [2020-10-29 03:36:52,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:36:52,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:52,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:36:52,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:36:52,242 INFO L87 Difference]: Start difference. First operand 185 states and 189 transitions. Second operand 28 states. [2020-10-29 03:36:52,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:52,758 INFO L93 Difference]: Finished difference Result 321 states and 330 transitions. [2020-10-29 03:36:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:36:52,758 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 181 [2020-10-29 03:36:52,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:52,761 INFO L225 Difference]: With dead ends: 321 [2020-10-29 03:36:52,761 INFO L226 Difference]: Without dead ends: 194 [2020-10-29 03:36:52,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:36:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-29 03:36:52,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2020-10-29 03:36:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-29 03:36:52,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 195 transitions. [2020-10-29 03:36:52,788 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 195 transitions. Word has length 181 [2020-10-29 03:36:52,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:52,788 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 195 transitions. [2020-10-29 03:36:52,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:36:52,788 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 195 transitions. [2020-10-29 03:36:52,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-29 03:36:52,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:52,790 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:52,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:36:52,790 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:52,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:52,791 INFO L82 PathProgramCache]: Analyzing trace with hash 2016990760, now seen corresponding path program 26 times [2020-10-29 03:36:52,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:52,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496779564] [2020-10-29 03:36:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:58,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:58,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 03:36:58,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:36:58,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5301 [2020-10-29 03:36:58,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:58,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:36:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 03:36:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:36:58,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:58,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:58,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:58,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:58,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:58,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:58,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:58,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:58,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:58,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-29 03:36:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:58,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:58,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:58,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:58,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:58,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:58,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:58,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-29 03:36:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:58,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:58,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:58,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:36:58,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:58,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:58,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:58,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:36:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:58,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:36:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 4 proven. 625 refuted. 0 times theorem prover too weak. 1262 trivial. 0 not checked. [2020-10-29 03:36:58,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496779564] [2020-10-29 03:36:58,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:58,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:36:58,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305599379] [2020-10-29 03:36:58,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:36:58,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:58,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:36:58,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:36:58,746 INFO L87 Difference]: Start difference. First operand 191 states and 195 transitions. Second operand 29 states. [2020-10-29 03:36:59,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:59,403 INFO L93 Difference]: Finished difference Result 331 states and 340 transitions. [2020-10-29 03:36:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:36:59,403 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 187 [2020-10-29 03:36:59,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:59,405 INFO L225 Difference]: With dead ends: 331 [2020-10-29 03:36:59,406 INFO L226 Difference]: Without dead ends: 200 [2020-10-29 03:36:59,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:36:59,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-29 03:36:59,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2020-10-29 03:36:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 03:36:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 201 transitions. [2020-10-29 03:36:59,432 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 201 transitions. Word has length 187 [2020-10-29 03:36:59,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:59,432 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 201 transitions. [2020-10-29 03:36:59,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:36:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 201 transitions. [2020-10-29 03:36:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-29 03:36:59,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:59,434 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:59,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:36:59,434 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:59,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1334550978, now seen corresponding path program 27 times [2020-10-29 03:36:59,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:59,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289426898] [2020-10-29 03:36:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:59,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:59,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:59,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:04,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:04,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-29 03:37:04,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:37:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-10-29 03:37:04,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:04,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:37:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 03:37:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:37:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:05,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:05,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:05,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:05,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:05,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:05,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:05,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:05,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:05,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-29 03:37:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:05,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:05,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:05,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:05,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:05,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:05,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:05,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:05,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 03:37:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:05,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:05,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:05,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:05,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:37:05,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:05,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:05,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 4 proven. 676 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2020-10-29 03:37:05,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289426898] [2020-10-29 03:37:05,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:05,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:37:05,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338673787] [2020-10-29 03:37:05,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:37:05,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:05,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:37:05,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:37:05,279 INFO L87 Difference]: Start difference. First operand 197 states and 201 transitions. Second operand 30 states. [2020-10-29 03:37:05,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:05,963 INFO L93 Difference]: Finished difference Result 341 states and 350 transitions. [2020-10-29 03:37:05,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:37:05,964 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 193 [2020-10-29 03:37:05,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:05,965 INFO L225 Difference]: With dead ends: 341 [2020-10-29 03:37:05,965 INFO L226 Difference]: Without dead ends: 206 [2020-10-29 03:37:05,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:37:05,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-29 03:37:05,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2020-10-29 03:37:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-29 03:37:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 207 transitions. [2020-10-29 03:37:05,992 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 207 transitions. Word has length 193 [2020-10-29 03:37:05,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:05,992 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 207 transitions. [2020-10-29 03:37:05,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:37:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 207 transitions. [2020-10-29 03:37:05,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-29 03:37:05,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:05,994 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:06,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:37:06,006 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:06,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:06,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1392349660, now seen corresponding path program 28 times [2020-10-29 03:37:06,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:06,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085633900] [2020-10-29 03:37:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:06,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:06,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:06,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:11,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:11,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-29 03:37:11,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:37:11,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-29 03:37:11,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:11,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:37:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:37:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:37:11,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:11,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:11,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:11,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:11,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:11,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:11,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:11,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-29 03:37:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:11,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:11,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:11,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:11,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:11,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:37:11,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:11,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:11,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:11,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:11,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:11,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:11,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-29 03:37:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:11,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:11,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:11,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:11,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:11,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:37:11,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:11,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:11,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:11,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:11,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:11,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2203 backedges. 4 proven. 729 refuted. 0 times theorem prover too weak. 1470 trivial. 0 not checked. [2020-10-29 03:37:11,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085633900] [2020-10-29 03:37:11,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:11,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:37:11,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844979368] [2020-10-29 03:37:11,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:37:11,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:11,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:37:11,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:37:11,824 INFO L87 Difference]: Start difference. First operand 203 states and 207 transitions. Second operand 31 states. [2020-10-29 03:37:12,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:12,524 INFO L93 Difference]: Finished difference Result 351 states and 360 transitions. [2020-10-29 03:37:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:37:12,525 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 199 [2020-10-29 03:37:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:12,527 INFO L225 Difference]: With dead ends: 351 [2020-10-29 03:37:12,527 INFO L226 Difference]: Without dead ends: 212 [2020-10-29 03:37:12,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:37:12,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-29 03:37:12,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 209. [2020-10-29 03:37:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-29 03:37:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 213 transitions. [2020-10-29 03:37:12,554 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 213 transitions. Word has length 199 [2020-10-29 03:37:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:12,554 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 213 transitions. [2020-10-29 03:37:12,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:37:12,554 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 213 transitions. [2020-10-29 03:37:12,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-29 03:37:12,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:12,556 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:12,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:37:12,556 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:12,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1054426742, now seen corresponding path program 29 times [2020-10-29 03:37:12,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:12,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075495546] [2020-10-29 03:37:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:12,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:12,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:18,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:18,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 03:37:18,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:37:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5559 [2020-10-29 03:37:18,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:18,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:37:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 03:37:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:37:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:18,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:18,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:18,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:18,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:18,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:18,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:18,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:18,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:18,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-29 03:37:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:18,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:18,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:18,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:18,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:37:18,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:18,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:18,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:18,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 03:37:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:18,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:18,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:18,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:18,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:18,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:37:18,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:18,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:18,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:18,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:18,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:18,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2368 backedges. 4 proven. 784 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2020-10-29 03:37:18,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075495546] [2020-10-29 03:37:18,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:18,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:37:18,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109979671] [2020-10-29 03:37:18,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:37:18,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:18,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:37:18,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:37:18,909 INFO L87 Difference]: Start difference. First operand 209 states and 213 transitions. Second operand 32 states. [2020-10-29 03:37:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:19,653 INFO L93 Difference]: Finished difference Result 361 states and 370 transitions. [2020-10-29 03:37:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:37:19,653 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 205 [2020-10-29 03:37:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:19,655 INFO L225 Difference]: With dead ends: 361 [2020-10-29 03:37:19,655 INFO L226 Difference]: Without dead ends: 218 [2020-10-29 03:37:19,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:37:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-29 03:37:19,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 215. [2020-10-29 03:37:19,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-29 03:37:19,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 219 transitions. [2020-10-29 03:37:19,684 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 219 transitions. Word has length 205 [2020-10-29 03:37:19,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:19,684 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 219 transitions. [2020-10-29 03:37:19,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:37:19,684 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 219 transitions. [2020-10-29 03:37:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-29 03:37:19,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:19,685 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:19,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:37:19,686 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:19,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:19,686 INFO L82 PathProgramCache]: Analyzing trace with hash -353280112, now seen corresponding path program 30 times [2020-10-29 03:37:19,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:19,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104874423] [2020-10-29 03:37:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:19,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:19,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:19,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:26,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:26,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 03:37:26,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:37:26,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6447 [2020-10-29 03:37:26,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:26,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:37:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 03:37:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:37:26,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:26,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:26,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:26,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:26,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:26,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:26,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:26,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:26,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:26,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:26,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-29 03:37:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:26,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:26,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:26,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:26,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:26,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:26,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:26,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:26,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 03:37:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:26,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:26,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:26,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:26,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:26,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:26,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:26,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2539 backedges. 4 proven. 841 refuted. 0 times theorem prover too weak. 1694 trivial. 0 not checked. [2020-10-29 03:37:26,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104874423] [2020-10-29 03:37:26,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:26,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:37:26,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544840774] [2020-10-29 03:37:26,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:37:26,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:26,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:37:26,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:37:26,958 INFO L87 Difference]: Start difference. First operand 215 states and 219 transitions. Second operand 33 states. [2020-10-29 03:37:27,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:27,672 INFO L93 Difference]: Finished difference Result 371 states and 380 transitions. [2020-10-29 03:37:27,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:37:27,672 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 211 [2020-10-29 03:37:27,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:27,674 INFO L225 Difference]: With dead ends: 371 [2020-10-29 03:37:27,674 INFO L226 Difference]: Without dead ends: 224 [2020-10-29 03:37:27,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:37:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-29 03:37:27,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2020-10-29 03:37:27,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-29 03:37:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 225 transitions. [2020-10-29 03:37:27,704 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 225 transitions. Word has length 211 [2020-10-29 03:37:27,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:27,705 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 225 transitions. [2020-10-29 03:37:27,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:37:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 225 transitions. [2020-10-29 03:37:27,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 03:37:27,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:27,707 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:27,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:37:27,707 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:27,708 INFO L82 PathProgramCache]: Analyzing trace with hash 77626666, now seen corresponding path program 31 times [2020-10-29 03:37:27,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:27,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667192695] [2020-10-29 03:37:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:27,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:27,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:27,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:32,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:32,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-29 03:37:32,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:37:32,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5206 [2020-10-29 03:37:32,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:32,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:32,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:37:32,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 03:37:32,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:37:32,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:33,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:33,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:33,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:33,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:33,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:33,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:33,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:33,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:33,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:33,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-29 03:37:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:33,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:33,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:33,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:33,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:33,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:33,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:33,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:33,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:33,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:33,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:33,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-29 03:37:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:33,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:33,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:33,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:33,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:33,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:33,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:33,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 4 proven. 900 refuted. 0 times theorem prover too weak. 1812 trivial. 0 not checked. [2020-10-29 03:37:33,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667192695] [2020-10-29 03:37:33,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:33,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:37:33,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738114514] [2020-10-29 03:37:33,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:37:33,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:33,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:37:33,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:37:33,780 INFO L87 Difference]: Start difference. First operand 221 states and 225 transitions. Second operand 34 states. [2020-10-29 03:37:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:34,528 INFO L93 Difference]: Finished difference Result 381 states and 390 transitions. [2020-10-29 03:37:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:37:34,529 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 217 [2020-10-29 03:37:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:34,530 INFO L225 Difference]: With dead ends: 381 [2020-10-29 03:37:34,530 INFO L226 Difference]: Without dead ends: 230 [2020-10-29 03:37:34,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:37:34,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-29 03:37:34,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2020-10-29 03:37:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-29 03:37:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2020-10-29 03:37:34,567 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 217 [2020-10-29 03:37:34,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:34,567 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2020-10-29 03:37:34,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:37:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2020-10-29 03:37:34,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-29 03:37:34,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:34,569 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:34,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:37:34,569 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:34,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:34,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1221148484, now seen corresponding path program 32 times [2020-10-29 03:37:34,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:34,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756800252] [2020-10-29 03:37:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:34,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:34,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:34,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:39,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:39,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-29 03:37:39,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:37:39,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5234 [2020-10-29 03:37:39,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:39,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:37:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 03:37:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:37:39,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:40,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:40,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:40,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:40,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:40,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:40,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:40,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:40,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:40,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:40,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-29 03:37:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:40,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:40,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:40,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:40,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:37:40,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:40,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:40,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 03:37:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:40,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:40,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:40,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:40,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:40,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:40,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:40,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:40,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2899 backedges. 4 proven. 961 refuted. 0 times theorem prover too weak. 1934 trivial. 0 not checked. [2020-10-29 03:37:40,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756800252] [2020-10-29 03:37:40,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:40,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:37:40,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244772801] [2020-10-29 03:37:40,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:37:40,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:40,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:37:40,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:37:40,739 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand 35 states. [2020-10-29 03:37:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:41,513 INFO L93 Difference]: Finished difference Result 391 states and 400 transitions. [2020-10-29 03:37:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:37:41,514 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 223 [2020-10-29 03:37:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:41,516 INFO L225 Difference]: With dead ends: 391 [2020-10-29 03:37:41,516 INFO L226 Difference]: Without dead ends: 236 [2020-10-29 03:37:41,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:37:41,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-29 03:37:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 233. [2020-10-29 03:37:41,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-29 03:37:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 237 transitions. [2020-10-29 03:37:41,547 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 237 transitions. Word has length 223 [2020-10-29 03:37:41,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:41,548 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 237 transitions. [2020-10-29 03:37:41,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:37:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 237 transitions. [2020-10-29 03:37:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 03:37:41,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:41,549 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:41,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:37:41,550 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:41,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:41,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1037452766, now seen corresponding path program 33 times [2020-10-29 03:37:41,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:41,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555617248] [2020-10-29 03:37:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:41,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:41,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:41,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:46,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:46,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-29 03:37:46,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:37:46,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5391 [2020-10-29 03:37:46,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:46,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:37:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 03:37:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:37:46,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:47,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:47,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:47,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:47,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:47,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:47,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:47,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-29 03:37:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:47,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:47,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:47,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:47,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:37:47,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:47,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:47,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:47,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-29 03:37:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:47,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:47,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:47,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:47,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:47,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:47,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:47,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:47,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3088 backedges. 4 proven. 1024 refuted. 0 times theorem prover too weak. 2060 trivial. 0 not checked. [2020-10-29 03:37:47,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555617248] [2020-10-29 03:37:47,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:47,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:37:47,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262891159] [2020-10-29 03:37:47,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:37:47,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:47,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:37:47,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:37:47,908 INFO L87 Difference]: Start difference. First operand 233 states and 237 transitions. Second operand 36 states. [2020-10-29 03:37:48,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:48,538 INFO L93 Difference]: Finished difference Result 401 states and 410 transitions. [2020-10-29 03:37:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:37:48,539 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 229 [2020-10-29 03:37:48,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:48,541 INFO L225 Difference]: With dead ends: 401 [2020-10-29 03:37:48,541 INFO L226 Difference]: Without dead ends: 242 [2020-10-29 03:37:48,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:37:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-29 03:37:48,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 239. [2020-10-29 03:37:48,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-29 03:37:48,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 243 transitions. [2020-10-29 03:37:48,574 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 243 transitions. Word has length 229 [2020-10-29 03:37:48,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:48,575 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 243 transitions. [2020-10-29 03:37:48,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:37:48,575 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 243 transitions. [2020-10-29 03:37:48,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-29 03:37:48,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:48,577 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:48,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:37:48,577 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:48,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1840918776, now seen corresponding path program 34 times [2020-10-29 03:37:48,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:48,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79402517] [2020-10-29 03:37:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:48,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:55,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-29 03:37:55,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:37:55,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6504 [2020-10-29 03:37:55,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:55,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:55,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:37:55,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:37:55,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 03:37:55,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:56,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:56,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:56,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:56,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:56,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:56,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:56,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:56,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:56,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-29 03:37:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:56,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:56,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:56,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:56,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:37:56,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:56,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:56,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:56,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 03:37:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:56,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:56,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:56,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:37:56,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:56,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:56,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:56,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:37:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:56,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3283 backedges. 4 proven. 1089 refuted. 0 times theorem prover too weak. 2190 trivial. 0 not checked. [2020-10-29 03:37:56,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79402517] [2020-10-29 03:37:56,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:56,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:37:56,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811494689] [2020-10-29 03:37:56,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:37:56,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:56,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:37:56,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:37:56,126 INFO L87 Difference]: Start difference. First operand 239 states and 243 transitions. Second operand 37 states. [2020-10-29 03:37:57,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:57,006 INFO L93 Difference]: Finished difference Result 411 states and 420 transitions. [2020-10-29 03:37:57,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:37:57,007 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 235 [2020-10-29 03:37:57,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:57,009 INFO L225 Difference]: With dead ends: 411 [2020-10-29 03:37:57,009 INFO L226 Difference]: Without dead ends: 248 [2020-10-29 03:37:57,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:37:57,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-29 03:37:57,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 245. [2020-10-29 03:37:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-29 03:37:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2020-10-29 03:37:57,040 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 235 [2020-10-29 03:37:57,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:57,041 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2020-10-29 03:37:57,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:37:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2020-10-29 03:37:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 03:37:57,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:57,043 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:57,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:37:57,043 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:57,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:57,043 INFO L82 PathProgramCache]: Analyzing trace with hash 535797906, now seen corresponding path program 35 times [2020-10-29 03:37:57,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:57,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246358988] [2020-10-29 03:37:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:57,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:57,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking...