/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/avg40-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:10:12,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:10:12,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:10:12,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:10:12,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:10:12,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:10:12,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:10:12,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:10:12,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:10:12,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:10:12,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:10:12,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:10:12,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:10:12,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:10:12,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:10:12,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:10:12,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:10:12,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:10:12,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:10:12,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:10:12,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:10:12,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:10:12,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:10:12,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:10:12,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:10:12,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:10:12,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:10:12,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:10:12,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:10:12,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:10:12,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:10:12,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:10:12,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:10:12,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:10:12,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:10:12,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:10:12,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:10:12,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:10:12,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:10:12,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:10:12,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:10:12,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:10:12,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:10:12,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:10:12,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:10:12,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:10:12,554 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:10:12,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:10:12,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:10:12,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:10:12,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:10:12,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:10:12,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:10:12,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:10:12,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:10:12,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:10:12,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:10:12,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:10:12,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:10:12,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:10:12,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:10:12,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:10:12,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:10:12,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:10:12,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:10:12,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:10:12,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:10:12,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:10:12,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:10:12,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:10:12,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:10:12,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:10:12,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:10:12,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:10:12,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:10:12,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:10:12,974 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:10:12,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg40-2.i [2020-10-27 04:10:13,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c4cdc1d0/8eb9f3b7d5d1430780eadd567b4c2608/FLAG648b5acf7 [2020-10-27 04:10:13,693 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:10:13,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg40-2.i [2020-10-27 04:10:13,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c4cdc1d0/8eb9f3b7d5d1430780eadd567b4c2608/FLAG648b5acf7 [2020-10-27 04:10:14,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c4cdc1d0/8eb9f3b7d5d1430780eadd567b4c2608 [2020-10-27 04:10:14,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:10:14,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:10:14,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:10:14,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:10:14,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:10:14,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:10:14" (1/1) ... [2020-10-27 04:10:14,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e881781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:14, skipping insertion in model container [2020-10-27 04:10:14,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:10:14" (1/1) ... [2020-10-27 04:10:14,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:10:14,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:10:14,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:10:14,290 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:10:14,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:10:14,327 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:10:14,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:14 WrapperNode [2020-10-27 04:10:14,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:10:14,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:10:14,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:10:14,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:10:14,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:14" (1/1) ... [2020-10-27 04:10:14,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:14" (1/1) ... [2020-10-27 04:10:14,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:14" (1/1) ... [2020-10-27 04:10:14,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:14" (1/1) ... [2020-10-27 04:10:14,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:14" (1/1) ... [2020-10-27 04:10:14,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:14" (1/1) ... [2020-10-27 04:10:14,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:14" (1/1) ... [2020-10-27 04:10:14,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:10:14,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:10:14,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:10:14,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:10:14,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:10:14,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:10:14,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:10:14,441 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:10:14,442 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-27 04:10:14,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:10:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:10:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:10:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 04:10:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 04:10:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:10:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:10:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 04:10:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-27 04:10:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:10:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:10:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:10:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:10:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:10:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:10:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:10:14,883 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:10:14,883 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 04:10:14,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:10:14 BoogieIcfgContainer [2020-10-27 04:10:14,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:10:14,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:10:14,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:10:14,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:10:14,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:10:14" (1/3) ... [2020-10-27 04:10:14,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdd7df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:10:14, skipping insertion in model container [2020-10-27 04:10:14,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:14" (2/3) ... [2020-10-27 04:10:14,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdd7df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:10:14, skipping insertion in model container [2020-10-27 04:10:14,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:10:14" (3/3) ... [2020-10-27 04:10:14,901 INFO L111 eAbstractionObserver]: Analyzing ICFG avg40-2.i [2020-10-27 04:10:14,914 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:10:14,919 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:10:14,933 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:10:14,972 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:10:14,972 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:10:14,973 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:10:14,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:10:14,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:10:14,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:10:14,973 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:10:14,973 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:10:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 04:10:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:10:15,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:15,008 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:15,009 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:15,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:15,018 INFO L82 PathProgramCache]: Analyzing trace with hash 585288593, now seen corresponding path program 1 times [2020-10-27 04:10:15,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:15,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118358770] [2020-10-27 04:10:15,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:15,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:15,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:15,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:15,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:15,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:16,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:16,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:10:16,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:10:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1722 [2020-10-27 04:10:16,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:10:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:10:17,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:17,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:17,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:17,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:17,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:17,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:10:17,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:17,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:17,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:17,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:17,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:10:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:17,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:17,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:17,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:17,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:17,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:17,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:10:17,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:10:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:17,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:17,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:10:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:17,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:17,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:17,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:17,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:17,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:17,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:10:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:17,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:17,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:10:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:17,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:17,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:17,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:17,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:17,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:17,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:10:17,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:10:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:10:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:10:17,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118358770] [2020-10-27 04:10:17,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:10:17,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 04:10:17,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132680851] [2020-10-27 04:10:17,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 04:10:17,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:17,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 04:10:17,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:10:17,121 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 04:10:17,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:17,238 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 04:10:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 04:10:17,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 04:10:17,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:17,249 INFO L225 Difference]: With dead ends: 60 [2020-10-27 04:10:17,249 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 04:10:17,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:10:17,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 04:10:17,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 04:10:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 04:10:17,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 04:10:17,306 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 04:10:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:17,308 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 04:10:17,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 04:10:17,308 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 04:10:17,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:10:17,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:17,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:17,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:10:17,313 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:17,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:17,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1339353745, now seen corresponding path program 1 times [2020-10-27 04:10:17,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:17,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727036412] [2020-10-27 04:10:17,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:17,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:17,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:17,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:19,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:10:19,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:10:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2167 [2020-10-27 04:10:19,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:19,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:19,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:19,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:19,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:19,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:10:19,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:19,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:19,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:19,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:19,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:19,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:10:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:19,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:19,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:19,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:19,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:10:19,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:19,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:19,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:10:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:19,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:19,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:19,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:10:19,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:10:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:10:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:19,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:19,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:19,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:19,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:10:19,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:19,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:19,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:19,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:19,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:10:19,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727036412] [2020-10-27 04:10:19,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:10:19,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:10:19,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13276827] [2020-10-27 04:10:19,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:10:19,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:19,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:10:19,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:10:19,671 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-27 04:10:19,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:19,829 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-10-27 04:10:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:10:19,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-27 04:10:19,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:19,832 INFO L225 Difference]: With dead ends: 52 [2020-10-27 04:10:19,832 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 04:10:19,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:10:19,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 04:10:19,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-27 04:10:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 04:10:19,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-27 04:10:19,853 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 34 [2020-10-27 04:10:19,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:19,853 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-27 04:10:19,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:10:19,853 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-27 04:10:19,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 04:10:19,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:19,856 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:19,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:10:19,857 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:19,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:19,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1648388849, now seen corresponding path program 1 times [2020-10-27 04:10:19,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:19,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201713136] [2020-10-27 04:10:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:19,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:20,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:24,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:24,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:10:24,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:10:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:10:24,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:10:24,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:24,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:24,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:24,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:24,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:24,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:10:24,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:24,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:24,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 04:10:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:24,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:24,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:24,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:24,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:10:24,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:24,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:10:24,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:24,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:10:24,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:10:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 04:10:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:25,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:10:25,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:25,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 04:10:25,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:10:25,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:25,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:10:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:25,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:10:25,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:10:25,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:10:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 04:10:25,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201713136] [2020-10-27 04:10:25,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:25,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 04:10:25,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557245650] [2020-10-27 04:10:25,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:10:25,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:25,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:10:25,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:10:25,100 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-10-27 04:10:25,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:25,270 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2020-10-27 04:10:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:10:25,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-27 04:10:25,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:25,272 INFO L225 Difference]: With dead ends: 57 [2020-10-27 04:10:25,272 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 04:10:25,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:10:25,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 04:10:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 04:10:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 04:10:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 04:10:25,281 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 42 [2020-10-27 04:10:25,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:25,281 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 04:10:25,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:10:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 04:10:25,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 04:10:25,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:25,283 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:25,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:10:25,284 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:25,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:25,284 INFO L82 PathProgramCache]: Analyzing trace with hash 60514641, now seen corresponding path program 2 times [2020-10-27 04:10:25,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:25,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658651607] [2020-10-27 04:10:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:30,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:10:30,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:10:30,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:10:30,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:30,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:10:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:30,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:30,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:30,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:30,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:30,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:30,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:30,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:30,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:30,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:30,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:30,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 04:10:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:30,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:30,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:10:30,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:30,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 04:10:30,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:10:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:30,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 04:10:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:30,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:30,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:10:30,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:30,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 04:10:30,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:10:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:10:30,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:10:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:30,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:10:30,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:30,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 04:10:30,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:10:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 04:10:30,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658651607] [2020-10-27 04:10:30,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:30,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:10:30,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063165360] [2020-10-27 04:10:30,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:10:30,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:30,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:10:30,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:10:30,585 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 9 states. [2020-10-27 04:10:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:30,823 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-27 04:10:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:10:30,824 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-27 04:10:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:30,825 INFO L225 Difference]: With dead ends: 63 [2020-10-27 04:10:30,825 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 04:10:30,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:10:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 04:10:30,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-27 04:10:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 04:10:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-27 04:10:30,840 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 50 [2020-10-27 04:10:30,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:30,841 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-27 04:10:30,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:10:30,841 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-27 04:10:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 04:10:30,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:30,843 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:30,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:10:30,844 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:30,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:30,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2107559345, now seen corresponding path program 3 times [2020-10-27 04:10:30,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:30,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337389168] [2020-10-27 04:10:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:33,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:35,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:35,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 04:10:35,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:10:35,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:10:35,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:35,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:35,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:35,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:35,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:35,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:35,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:10:35,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:35,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:35,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:35,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:10:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:35,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:35,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:35,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:10:35,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:35,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 04:10:35,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:36,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 04:10:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:36,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:36,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:10:36,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:36,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 04:10:36,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:36,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:36,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:36,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:10:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:36,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:10:36,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:10:36,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:36,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 63 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 04:10:36,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337389168] [2020-10-27 04:10:36,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:36,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:10:36,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317098240] [2020-10-27 04:10:36,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:10:36,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:36,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:10:36,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:10:36,161 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 11 states. [2020-10-27 04:10:36,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:36,444 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-27 04:10:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:10:36,445 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-27 04:10:36,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:36,446 INFO L225 Difference]: With dead ends: 69 [2020-10-27 04:10:36,447 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 04:10:36,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:10:36,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 04:10:36,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-27 04:10:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 04:10:36,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-27 04:10:36,460 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 58 [2020-10-27 04:10:36,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:36,460 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-27 04:10:36,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:10:36,460 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-27 04:10:36,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:10:36,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:36,464 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:36,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:10:36,465 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:36,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:36,465 INFO L82 PathProgramCache]: Analyzing trace with hash -844910575, now seen corresponding path program 4 times [2020-10-27 04:10:36,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:36,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76024538] [2020-10-27 04:10:36,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:41,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 04:10:41,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:10:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:10:41,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:41,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:41,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:41,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:41,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:10:41,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:41,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:41,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 04:10:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:41,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:41,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:10:41,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:41,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:10:41,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:41,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:41,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:41,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:41,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 04:10:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:41,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:41,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:10:41,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:41,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 04:10:41,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:41,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:41,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:41,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:41,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:41,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:10:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:41,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:41,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:10:41,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:41,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 04:10:41,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:41,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 48 proven. 112 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 04:10:41,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76024538] [2020-10-27 04:10:41,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:41,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:10:41,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612582947] [2020-10-27 04:10:41,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:10:41,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:41,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:10:41,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:10:41,806 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 13 states. [2020-10-27 04:10:42,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:42,119 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-27 04:10:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:10:42,120 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-27 04:10:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:42,121 INFO L225 Difference]: With dead ends: 75 [2020-10-27 04:10:42,121 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 04:10:42,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:10:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 04:10:42,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-27 04:10:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 04:10:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-27 04:10:42,129 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 66 [2020-10-27 04:10:42,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:42,129 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-27 04:10:42,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:10:42,129 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-27 04:10:42,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 04:10:42,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:42,131 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:42,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:10:42,131 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:42,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:42,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1264383887, now seen corresponding path program 5 times [2020-10-27 04:10:42,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:42,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554995995] [2020-10-27 04:10:42,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:42,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:42,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:42,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:10:47,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:47,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:10:47,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:47,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:47,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:47,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 04:10:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:10:47,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:47,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 04:10:47,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:47,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:47,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:47,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:10:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:10:47,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:47,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 04:10:47,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:47,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:10:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:10:47,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:47,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 04:10:47,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:47,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:47,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 75 proven. 175 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 04:10:47,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554995995] [2020-10-27 04:10:47,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:47,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:10:47,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514169771] [2020-10-27 04:10:47,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:10:47,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:47,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:10:47,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:10:47,517 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 15 states. [2020-10-27 04:10:47,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:47,956 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-10-27 04:10:47,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:10:47,957 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-27 04:10:47,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:47,958 INFO L225 Difference]: With dead ends: 81 [2020-10-27 04:10:47,958 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 04:10:47,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:10:47,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 04:10:47,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-27 04:10:47,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 04:10:47,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-27 04:10:47,971 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 74 [2020-10-27 04:10:47,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:47,971 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-27 04:10:47,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:10:47,971 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-27 04:10:47,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 04:10:47,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:47,973 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:47,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:10:47,973 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:47,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:47,974 INFO L82 PathProgramCache]: Analyzing trace with hash -952772911, now seen corresponding path program 6 times [2020-10-27 04:10:47,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:47,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731865042] [2020-10-27 04:10:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:48,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:48,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:52,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:52,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 04:10:52,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 04:10:52,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:53,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:53,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:53,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:53,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:53,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:53,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:53,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:10:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:53,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:53,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:53,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:53,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:10:53,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 04:10:53,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:53,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:53,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:53,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:10:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:53,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:53,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:53,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:53,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:10:53,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:53,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 04:10:53,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:53,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:53,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:53,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:53,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:10:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:53,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:53,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:53,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:10:53,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 04:10:53,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 108 proven. 252 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 04:10:53,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731865042] [2020-10-27 04:10:53,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:53,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 04:10:53,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954539535] [2020-10-27 04:10:53,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 04:10:53,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:53,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 04:10:53,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:10:53,446 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 17 states. [2020-10-27 04:10:53,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:53,904 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2020-10-27 04:10:53,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:10:53,905 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-10-27 04:10:53,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:53,906 INFO L225 Difference]: With dead ends: 87 [2020-10-27 04:10:53,907 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 04:10:53,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:10:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 04:10:53,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-27 04:10:53,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 04:10:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-27 04:10:53,920 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 82 [2020-10-27 04:10:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:53,922 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-27 04:10:53,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 04:10:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-27 04:10:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 04:10:53,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:53,928 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:53,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:10:53,929 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:53,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:53,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2106923825, now seen corresponding path program 7 times [2020-10-27 04:10:53,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:53,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676152697] [2020-10-27 04:10:53,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:53,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:53,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:54,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:54,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:58,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:58,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 04:10:58,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:58,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:10:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:59,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:59,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:59,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:59,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:59,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:59,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:59,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 04:10:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:59,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:59,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:59,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:10:59,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:59,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 04:10:59,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:59,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:10:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:59,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:59,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:59,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:59,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:10:59,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 04:10:59,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:59,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:10:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:59,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:59,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:59,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:59,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:10:59,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:59,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 04:10:59,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:59,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 147 proven. 343 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 04:10:59,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676152697] [2020-10-27 04:10:59,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:59,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 04:10:59,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955428142] [2020-10-27 04:10:59,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:10:59,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:59,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:10:59,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:10:59,496 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 19 states. [2020-10-27 04:10:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:59,991 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-10-27 04:10:59,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:10:59,992 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 90 [2020-10-27 04:10:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:59,993 INFO L225 Difference]: With dead ends: 93 [2020-10-27 04:10:59,993 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 04:10:59,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:10:59,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 04:11:00,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-27 04:11:00,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 04:11:00,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-27 04:11:00,001 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 90 [2020-10-27 04:11:00,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:00,002 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-27 04:11:00,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:11:00,002 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-27 04:11:00,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:11:00,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:00,003 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:00,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:11:00,003 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:00,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:00,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1134155153, now seen corresponding path program 8 times [2020-10-27 04:11:00,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:00,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332242358] [2020-10-27 04:11:00,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:00,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:00,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:00,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:00,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:05,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:05,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 04:11:05,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:11:05,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:11:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:11:05,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:05,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:05,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:05,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:05,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:05,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:05,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:11:05,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:05,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:11:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:05,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:05,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:05,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:11:05,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:05,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 04:11:05,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:05,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:11:05,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:05,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:11:05,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:05,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:11:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:05,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:05,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:05,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:05,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:11:05,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 04:11:05,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:11:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:11:05,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:05,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:11:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:05,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:05,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:05,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:05,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:11:05,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 04:11:05,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:11:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:11:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 192 proven. 448 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 04:11:05,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332242358] [2020-10-27 04:11:05,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:05,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 04:11:05,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356350517] [2020-10-27 04:11:05,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 04:11:05,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:05,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 04:11:05,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:11:05,563 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 21 states. [2020-10-27 04:11:06,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:06,194 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2020-10-27 04:11:06,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:11:06,195 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 98 [2020-10-27 04:11:06,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:06,196 INFO L225 Difference]: With dead ends: 99 [2020-10-27 04:11:06,196 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 04:11:06,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:11:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 04:11:06,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-10-27 04:11:06,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 04:11:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-27 04:11:06,205 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 98 [2020-10-27 04:11:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:06,206 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-27 04:11:06,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 04:11:06,206 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-27 04:11:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:11:06,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:06,207 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:06,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:11:06,207 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:06,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:06,208 INFO L82 PathProgramCache]: Analyzing trace with hash -2000878095, now seen corresponding path program 9 times [2020-10-27 04:11:06,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:06,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338566021] [2020-10-27 04:11:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:06,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:06,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:11,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:11,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:11:11,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:11,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:11:11,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:11:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:11:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:11,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:11,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:11,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:11,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:11,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:11,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:11,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:11:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:11,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:11,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:11,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:11:11,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:11,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 04:11:11,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:11:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:11,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:11:11,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:11,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:11:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:11,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:11,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:11,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:11,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:11:11,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:11,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 04:11:11,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:11,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:11:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:11:11,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:11,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:11:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:11,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:11,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:11,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:11,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:11:11,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:11,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 04:11:11,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:11:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:11:11,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 243 proven. 567 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 04:11:11,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338566021] [2020-10-27 04:11:11,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:11,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 04:11:11,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120482270] [2020-10-27 04:11:11,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 04:11:11,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:11,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 04:11:11,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:11:11,916 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 23 states. [2020-10-27 04:11:12,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:12,654 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-10-27 04:11:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 04:11:12,655 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 106 [2020-10-27 04:11:12,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:12,656 INFO L225 Difference]: With dead ends: 105 [2020-10-27 04:11:12,656 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 04:11:12,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:11:12,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 04:11:12,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-27 04:11:12,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 04:11:12,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-27 04:11:12,675 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 106 [2020-10-27 04:11:12,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:12,676 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-27 04:11:12,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 04:11:12,677 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-27 04:11:12,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:11:12,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:12,678 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:12,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:11:12,679 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:12,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:12,682 INFO L82 PathProgramCache]: Analyzing trace with hash -803754927, now seen corresponding path program 10 times [2020-10-27 04:11:12,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:12,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483987062] [2020-10-27 04:11:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:12,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:12,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:12,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:17,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:17,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:11:17,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:17,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:11:17,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:11:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:11:17,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:17,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:17,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:17,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:17,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:17,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:11:17,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:17,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:17,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:17,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:17,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:17,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:11:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:17,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:17,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:17,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:17,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:11:17,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:17,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 04:11:17,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:17,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:11:17,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:17,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:11:17,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:11:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:18,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:18,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:18,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:11:18,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:18,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 04:11:18,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:18,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:11:18,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:18,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:11:18,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:18,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:11:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:18,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:18,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:18,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:18,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:11:18,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:18,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 04:11:18,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:11:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:11:18,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 300 proven. 700 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 04:11:18,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483987062] [2020-10-27 04:11:18,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:18,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 04:11:18,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427113475] [2020-10-27 04:11:18,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 04:11:18,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:18,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 04:11:18,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:11:18,480 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 25 states. [2020-10-27 04:11:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:19,176 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-10-27 04:11:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:11:19,176 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 114 [2020-10-27 04:11:19,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:19,177 INFO L225 Difference]: With dead ends: 111 [2020-10-27 04:11:19,177 INFO L226 Difference]: Without dead ends: 72 [2020-10-27 04:11:19,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:11:19,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-27 04:11:19,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-27 04:11:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 04:11:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-10-27 04:11:19,186 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 114 [2020-10-27 04:11:19,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:19,187 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-10-27 04:11:19,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 04:11:19,187 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-10-27 04:11:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 04:11:19,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:19,189 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:19,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:11:19,189 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:19,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:19,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1067267919, now seen corresponding path program 11 times [2020-10-27 04:11:19,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:19,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419330549] [2020-10-27 04:11:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:19,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:19,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:19,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:19,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:24,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:24,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:11:24,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:24,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 04:11:24,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:11:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:11:24,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:24,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:24,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:24,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:24,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:24,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:11:24,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:24,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:24,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:11:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:24,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:24,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:24,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 04:11:24,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 04:11:24,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:11:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:11:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:24,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:11:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:24,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:24,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:24,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 04:11:24,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 04:11:24,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:11:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:24,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:11:24,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:24,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:11:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:24,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:24,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:24,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:24,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 04:11:24,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:24,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 04:11:24,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:11:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:11:24,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 363 proven. 847 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 04:11:24,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419330549] [2020-10-27 04:11:24,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:24,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 04:11:24,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994691889] [2020-10-27 04:11:24,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 04:11:24,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:24,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 04:11:24,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:11:24,973 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 27 states. [2020-10-27 04:11:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:25,822 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2020-10-27 04:11:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 04:11:25,823 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 122 [2020-10-27 04:11:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:25,824 INFO L225 Difference]: With dead ends: 117 [2020-10-27 04:11:25,824 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 04:11:25,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:11:25,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 04:11:25,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-27 04:11:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 04:11:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-10-27 04:11:25,834 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 122 [2020-10-27 04:11:25,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:25,834 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-10-27 04:11:25,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 04:11:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-10-27 04:11:25,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 04:11:25,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:25,836 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:25,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:11:25,836 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:25,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:25,838 INFO L82 PathProgramCache]: Analyzing trace with hash 871848721, now seen corresponding path program 12 times [2020-10-27 04:11:25,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:25,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393658515] [2020-10-27 04:11:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:25,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:30,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:30,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 04:11:30,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:11:30,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:11:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:11:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:31,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:31,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:31,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:31,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:31,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:31,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:11:31,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:31,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:31,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:31,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:31,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:31,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:11:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:31,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:31,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:11:31,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 04:11:31,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:11:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:11:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:31,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:11:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:31,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:31,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:31,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:11:31,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:31,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 04:11:31,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:11:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:11:31,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:31,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:11:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:31,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:31,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:31,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:31,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:11:31,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:31,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 04:11:31,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:11:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:11:31,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 432 proven. 1008 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-27 04:11:31,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393658515] [2020-10-27 04:11:31,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:31,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 04:11:31,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328727775] [2020-10-27 04:11:31,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 04:11:31,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:31,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 04:11:31,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2020-10-27 04:11:31,657 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 29 states. [2020-10-27 04:11:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:32,598 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2020-10-27 04:11:32,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 04:11:32,599 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 130 [2020-10-27 04:11:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:32,600 INFO L225 Difference]: With dead ends: 123 [2020-10-27 04:11:32,600 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 04:11:32,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 04:11:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 04:11:32,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-27 04:11:32,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 04:11:32,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-10-27 04:11:32,608 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 130 [2020-10-27 04:11:32,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:32,609 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-10-27 04:11:32,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 04:11:32,609 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-10-27 04:11:32,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 04:11:32,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:32,611 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:32,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:11:32,611 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:32,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:32,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1221485425, now seen corresponding path program 13 times [2020-10-27 04:11:32,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:32,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761804614] [2020-10-27 04:11:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:37,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:37,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 04:11:37,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:11:37,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:11:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:11:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:37,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:37,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:37,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:37,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:37,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:37,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 04:11:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:37,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:37,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:37,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:37,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 04:11:37,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:37,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 04:11:37,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:11:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:11:37,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:38,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:11:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:38,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:38,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 04:11:38,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:38,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 04:11:38,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:11:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:11:38,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:38,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 04:11:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:38,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:38,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:38,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:38,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 04:11:38,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:38,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 04:11:38,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:38,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:11:38,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:38,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:11:38,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1783 backedges. 507 proven. 1183 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-27 04:11:38,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761804614] [2020-10-27 04:11:38,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:38,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 04:11:38,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874226278] [2020-10-27 04:11:38,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 04:11:38,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:38,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 04:11:38,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:11:38,573 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 31 states. [2020-10-27 04:11:39,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:39,560 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-10-27 04:11:39,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 04:11:39,560 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 138 [2020-10-27 04:11:39,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:39,562 INFO L225 Difference]: With dead ends: 129 [2020-10-27 04:11:39,562 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 04:11:39,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:11:39,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 04:11:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-27 04:11:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 04:11:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-10-27 04:11:39,572 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 138 [2020-10-27 04:11:39,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:39,572 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-10-27 04:11:39,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 04:11:39,572 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-10-27 04:11:39,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 04:11:39,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:39,574 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:39,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:11:39,574 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:39,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:39,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1887494609, now seen corresponding path program 14 times [2020-10-27 04:11:39,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:39,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924854563] [2020-10-27 04:11:39,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:39,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:39,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:44,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:44,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 04:11:44,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:44,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:11:44,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:11:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:11:44,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:44,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:44,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:44,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:44,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:44,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:44,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:11:44,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:44,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:44,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:44,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:44,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:11:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:44,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:44,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:44,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:44,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:11:44,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:44,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 04:11:44,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:11:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:11:44,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:45,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:11:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:45,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:45,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:11:45,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:45,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 04:11:45,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:45,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:11:45,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:45,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:11:45,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:45,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 04:11:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:45,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:45,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:11:45,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 04:11:45,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:11:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:11:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 588 proven. 1372 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 04:11:45,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924854563] [2020-10-27 04:11:45,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:45,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 04:11:45,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376322419] [2020-10-27 04:11:45,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 04:11:45,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:45,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 04:11:45,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:11:45,639 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 33 states. [2020-10-27 04:11:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:46,711 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2020-10-27 04:11:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 04:11:46,713 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 146 [2020-10-27 04:11:46,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:46,714 INFO L225 Difference]: With dead ends: 135 [2020-10-27 04:11:46,714 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 04:11:46,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 04:11:46,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 04:11:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-27 04:11:46,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 04:11:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-10-27 04:11:46,727 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 146 [2020-10-27 04:11:46,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:46,729 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-10-27 04:11:46,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 04:11:46,729 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-10-27 04:11:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 04:11:46,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:46,732 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:46,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:11:46,732 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:46,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:46,733 INFO L82 PathProgramCache]: Analyzing trace with hash -2142775759, now seen corresponding path program 15 times [2020-10-27 04:11:46,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:46,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322916372] [2020-10-27 04:11:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:46,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:51,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 04:11:51,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:51,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:11:51,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:51,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:11:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:11:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:52,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:52,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:52,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:52,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:52,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:52,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:11:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:52,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:52,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:11:52,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:52,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 04:11:52,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:11:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:11:52,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:52,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:11:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:52,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:11:52,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:52,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-27 04:11:52,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:52,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:11:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:11:52,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:52,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 04:11:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:52,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:53,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:53,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:11:53,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:53,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-27 04:11:53,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:11:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:11:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 675 proven. 1575 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 04:11:53,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322916372] [2020-10-27 04:11:53,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:53,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 04:11:53,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237950148] [2020-10-27 04:11:53,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 04:11:53,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:53,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 04:11:53,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 04:11:53,145 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 35 states. [2020-10-27 04:11:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:54,290 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2020-10-27 04:11:54,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 04:11:54,291 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 154 [2020-10-27 04:11:54,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:54,292 INFO L225 Difference]: With dead ends: 141 [2020-10-27 04:11:54,292 INFO L226 Difference]: Without dead ends: 92 [2020-10-27 04:11:54,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:11:54,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-27 04:11:54,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-27 04:11:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 04:11:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-10-27 04:11:54,301 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 154 [2020-10-27 04:11:54,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:54,301 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-10-27 04:11:54,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 04:11:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-10-27 04:11:54,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 04:11:54,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:54,303 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:54,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:11:54,304 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:54,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:54,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1057210223, now seen corresponding path program 16 times [2020-10-27 04:11:54,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:54,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718533877] [2020-10-27 04:11:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:54,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 04:11:59,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:59,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 04:11:59,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:11:59,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:59,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:11:59,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:59,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:59,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:59,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:59,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:59,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:59,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:11:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:59,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:11:59,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:59,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-27 04:11:59,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:11:59,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:59,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:11:59,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:00,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:12:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:00,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:12:00,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 04:12:00,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:12:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:12:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:00,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 04:12:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:00,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:00,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:12:00,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:00,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-27 04:12:00,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:12:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:12:00,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2671 backedges. 768 proven. 1792 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-27 04:12:00,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718533877] [2020-10-27 04:12:00,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:00,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 04:12:00,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55552662] [2020-10-27 04:12:00,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 04:12:00,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:00,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 04:12:00,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 04:12:00,856 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 37 states. [2020-10-27 04:12:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:01,990 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2020-10-27 04:12:01,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 04:12:01,991 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 162 [2020-10-27 04:12:01,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:01,993 INFO L225 Difference]: With dead ends: 147 [2020-10-27 04:12:01,993 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 04:12:01,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=683, Invalid=2179, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 04:12:01,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 04:12:02,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-27 04:12:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 04:12:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2020-10-27 04:12:02,002 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 162 [2020-10-27 04:12:02,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:02,002 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2020-10-27 04:12:02,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 04:12:02,002 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2020-10-27 04:12:02,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 04:12:02,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:02,005 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:02,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:12:02,005 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:02,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:02,005 INFO L82 PathProgramCache]: Analyzing trace with hash -15261455, now seen corresponding path program 17 times [2020-10-27 04:12:02,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:02,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646616721] [2020-10-27 04:12:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:02,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:02,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:02,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:02,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:07,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:07,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 04:12:07,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:12:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-27 04:12:07,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:12:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:12:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:07,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:07,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:07,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:07,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:07,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:07,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:07,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:07,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:12:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:07,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:07,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:07,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:07,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:12:07,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:07,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 04:12:07,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:12:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:12:07,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:08,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:12:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:08,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:08,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:08,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:08,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:12:08,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:08,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 04:12:08,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:08,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:12:08,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:08,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:12:08,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:08,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 04:12:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:08,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:08,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:08,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:08,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:12:08,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:08,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 04:12:08,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:08,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:12:08,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:08,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:12:08,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3007 backedges. 867 proven. 2023 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-27 04:12:08,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646616721] [2020-10-27 04:12:08,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:08,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 04:12:08,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095955166] [2020-10-27 04:12:08,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 04:12:08,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:08,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 04:12:08,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:12:08,510 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 39 states. [2020-10-27 04:12:09,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:09,915 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-10-27 04:12:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 04:12:09,915 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 170 [2020-10-27 04:12:09,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:09,917 INFO L225 Difference]: With dead ends: 153 [2020-10-27 04:12:09,917 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 04:12:09,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=759, Invalid=2433, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 04:12:09,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 04:12:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-10-27 04:12:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-27 04:12:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-10-27 04:12:09,929 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 170 [2020-10-27 04:12:09,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:09,929 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-10-27 04:12:09,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 04:12:09,929 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-10-27 04:12:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 04:12:09,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:09,937 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:09,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:12:09,937 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:09,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:09,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1699645615, now seen corresponding path program 18 times [2020-10-27 04:12:09,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:09,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808245233] [2020-10-27 04:12:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:09,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:10,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:10,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:10,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:15,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:15,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 04:12:15,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:12:15,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 04:12:15,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:12:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:12:15,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:15,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:15,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:15,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:15,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:15,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:15,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:15,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:15,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:15,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:15,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:15,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:12:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:15,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:15,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:15,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:12:15,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:15,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-27 04:12:15,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:15,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:12:15,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:15,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:12:15,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:16,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:12:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:16,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:12:16,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 04:12:16,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:12:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:12:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:16,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 04:12:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:16,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:16,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:12:16,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:16,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-27 04:12:16,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:12:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:12:16,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3363 backedges. 972 proven. 2268 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 04:12:16,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808245233] [2020-10-27 04:12:16,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:16,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 04:12:16,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977711608] [2020-10-27 04:12:16,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 04:12:16,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:16,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 04:12:16,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 04:12:16,568 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 41 states. [2020-10-27 04:12:18,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:18,095 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2020-10-27 04:12:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 04:12:18,096 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 178 [2020-10-27 04:12:18,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:18,097 INFO L225 Difference]: With dead ends: 159 [2020-10-27 04:12:18,097 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 04:12:18,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 04:12:18,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 04:12:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-10-27 04:12:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-27 04:12:18,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-10-27 04:12:18,106 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 178 [2020-10-27 04:12:18,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:18,107 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-10-27 04:12:18,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 04:12:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-10-27 04:12:18,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-27 04:12:18,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:18,108 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:18,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:12:18,108 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:18,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:18,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1752939599, now seen corresponding path program 19 times [2020-10-27 04:12:18,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:18,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38193842] [2020-10-27 04:12:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:18,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:18,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:18,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:18,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:23,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:23,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-27 04:12:23,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:12:23,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-27 04:12:23,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:23,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:12:23,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:23,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:12:23,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:23,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:23,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:23,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:23,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:23,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:23,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:23,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:23,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:12:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:23,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:23,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:23,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:23,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:12:23,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-27 04:12:23,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:12:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:12:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:24,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:12:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:24,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:24,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:24,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:12:24,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:24,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 04:12:24,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:12:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:12:24,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:24,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 04:12:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:24,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:24,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:24,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:12:24,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:24,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-27 04:12:24,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:12:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:12:24,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3739 backedges. 1083 proven. 2527 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-27 04:12:25,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38193842] [2020-10-27 04:12:25,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:25,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-27 04:12:25,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712115870] [2020-10-27 04:12:25,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-27 04:12:25,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:25,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-27 04:12:25,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 04:12:25,057 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand 43 states. [2020-10-27 04:12:26,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:26,583 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2020-10-27 04:12:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 04:12:26,583 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 186 [2020-10-27 04:12:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:26,584 INFO L225 Difference]: With dead ends: 165 [2020-10-27 04:12:26,584 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 04:12:26,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=923, Invalid=2983, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 04:12:26,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 04:12:26,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-27 04:12:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 04:12:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-10-27 04:12:26,593 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 186 [2020-10-27 04:12:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:26,594 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-10-27 04:12:26,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-27 04:12:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-10-27 04:12:26,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 04:12:26,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:26,595 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:26,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 04:12:26,596 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:26,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1394047471, now seen corresponding path program 20 times [2020-10-27 04:12:26,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:26,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334238701] [2020-10-27 04:12:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:26,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:26,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:31,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:31,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-27 04:12:31,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:12:31,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 04:12:31,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:12:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:12:31,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:32,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:32,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:32,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:32,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:32,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:12:32,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:32,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:32,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:32,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:32,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:12:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:32,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:32,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:32,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:32,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:32,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-27 04:12:32,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:12:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:12:32,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:32,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:12:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:32,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:33,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:33,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:33,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:33,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 04:12:33,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:12:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:12:33,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:33,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 04:12:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:33,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:33,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:33,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:33,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:33,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:33,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 04:12:33,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:12:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:12:33,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4135 backedges. 1200 proven. 2800 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-27 04:12:33,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334238701] [2020-10-27 04:12:33,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:33,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-27 04:12:33,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628562578] [2020-10-27 04:12:33,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-27 04:12:33,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:33,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-27 04:12:33,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:12:33,426 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 45 states. [2020-10-27 04:12:35,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:35,162 INFO L93 Difference]: Finished difference Result 171 states and 183 transitions. [2020-10-27 04:12:35,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 04:12:35,165 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 194 [2020-10-27 04:12:35,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:35,166 INFO L225 Difference]: With dead ends: 171 [2020-10-27 04:12:35,166 INFO L226 Difference]: Without dead ends: 112 [2020-10-27 04:12:35,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1011, Invalid=3279, Unknown=0, NotChecked=0, Total=4290 [2020-10-27 04:12:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-27 04:12:35,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-10-27 04:12:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 04:12:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2020-10-27 04:12:35,182 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 194 [2020-10-27 04:12:35,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:35,183 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2020-10-27 04:12:35,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-27 04:12:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2020-10-27 04:12:35,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-27 04:12:35,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:35,184 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:35,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 04:12:35,185 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:35,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:35,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1440169585, now seen corresponding path program 21 times [2020-10-27 04:12:35,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:35,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051630567] [2020-10-27 04:12:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:35,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:35,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:35,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:40,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:40,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 04:12:40,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:12:40,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:12:40,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:12:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:12:40,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:40,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:40,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:40,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:40,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:40,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:40,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:40,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:12:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:40,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:40,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:40,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:12:40,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:40,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-27 04:12:40,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:40,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:12:40,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:40,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:12:40,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 04:12:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:41,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:41,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:41,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:41,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:12:41,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:41,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-27 04:12:41,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:12:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:12:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:41,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 04:12:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:41,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:41,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:42,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:42,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:12:42,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:42,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-27 04:12:42,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:42,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:12:42,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:42,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:12:42,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4551 backedges. 1323 proven. 3087 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-27 04:12:42,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051630567] [2020-10-27 04:12:42,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:42,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-27 04:12:42,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611762885] [2020-10-27 04:12:42,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-27 04:12:42,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:42,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-27 04:12:42,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1609, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 04:12:42,387 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 47 states. [2020-10-27 04:12:44,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:44,160 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2020-10-27 04:12:44,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 04:12:44,161 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 202 [2020-10-27 04:12:44,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:44,162 INFO L225 Difference]: With dead ends: 177 [2020-10-27 04:12:44,162 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 04:12:44,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1103, Invalid=3589, Unknown=0, NotChecked=0, Total=4692 [2020-10-27 04:12:44,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 04:12:44,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-27 04:12:44,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 04:12:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2020-10-27 04:12:44,171 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 202 [2020-10-27 04:12:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:44,172 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2020-10-27 04:12:44,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-27 04:12:44,172 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2020-10-27 04:12:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 04:12:44,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:44,173 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:44,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 04:12:44,174 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:44,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:44,174 INFO L82 PathProgramCache]: Analyzing trace with hash -521573167, now seen corresponding path program 22 times [2020-10-27 04:12:44,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:44,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929504964] [2020-10-27 04:12:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:44,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:44,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:49,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:49,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 04:12:49,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:12:49,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:12:49,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:49,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:12:49,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:49,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:12:49,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:49,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:49,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:49,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:49,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:49,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:49,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:12:49,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:49,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:49,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:49,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:12:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:50,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:12:50,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:50,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-27 04:12:50,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:12:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:12:50,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:51,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:12:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:51,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:51,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:51,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:12:51,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 04:12:51,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:12:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:12:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 04:12:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:51,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:51,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:51,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:51,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:12:51,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:51,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-27 04:12:51,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:12:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:12:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4987 backedges. 1452 proven. 3388 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-27 04:12:51,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929504964] [2020-10-27 04:12:51,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:51,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-27 04:12:51,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230380134] [2020-10-27 04:12:51,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-27 04:12:51,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:51,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-27 04:12:51,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 04:12:51,769 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand 49 states. [2020-10-27 04:12:53,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:53,607 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2020-10-27 04:12:53,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 04:12:53,608 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 210 [2020-10-27 04:12:53,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:53,609 INFO L225 Difference]: With dead ends: 183 [2020-10-27 04:12:53,609 INFO L226 Difference]: Without dead ends: 120 [2020-10-27 04:12:53,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1199, Invalid=3913, Unknown=0, NotChecked=0, Total=5112 [2020-10-27 04:12:53,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-27 04:12:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-27 04:12:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-27 04:12:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2020-10-27 04:12:53,619 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 210 [2020-10-27 04:12:53,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:53,619 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2020-10-27 04:12:53,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-27 04:12:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2020-10-27 04:12:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 04:12:53,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:53,621 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 23, 23, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:53,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 04:12:53,621 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:53,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:53,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2141712079, now seen corresponding path program 23 times [2020-10-27 04:12:53,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:53,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412878516] [2020-10-27 04:12:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:53,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:53,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:53,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:53,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:58,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 04:12:58,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:12:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-27 04:12:58,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:12:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:12:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:59,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:59,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:59,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:59,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:59,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:59,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:12:59,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:59,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:59,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:12:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:59,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:59,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:59,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:59,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:12:59,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:59,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-27 04:12:59,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:12:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:12:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 04:13:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:00,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:00,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:13:00,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:00,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-27 04:13:00,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:13:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:13:00,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:00,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:13:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:00,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:00,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:13:00,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:00,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-27 04:13:00,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:13:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:13:00,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5443 backedges. 1587 proven. 3703 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-27 04:13:00,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412878516] [2020-10-27 04:13:00,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:00,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-27 04:13:00,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702204280] [2020-10-27 04:13:00,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-27 04:13:00,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:00,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-27 04:13:00,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:13:00,983 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand 51 states. [2020-10-27 04:13:03,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:03,106 INFO L93 Difference]: Finished difference Result 189 states and 201 transitions. [2020-10-27 04:13:03,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-27 04:13:03,107 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 218 [2020-10-27 04:13:03,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:03,108 INFO L225 Difference]: With dead ends: 189 [2020-10-27 04:13:03,109 INFO L226 Difference]: Without dead ends: 124 [2020-10-27 04:13:03,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1299, Invalid=4251, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 04:13:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-27 04:13:03,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-10-27 04:13:03,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-27 04:13:03,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 126 transitions. [2020-10-27 04:13:03,117 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 126 transitions. Word has length 218 [2020-10-27 04:13:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:03,117 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 126 transitions. [2020-10-27 04:13:03,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-27 04:13:03,118 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 126 transitions. [2020-10-27 04:13:03,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-27 04:13:03,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:03,119 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:03,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 04:13:03,120 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:03,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:03,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1509698449, now seen corresponding path program 24 times [2020-10-27 04:13:03,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:03,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783734024] [2020-10-27 04:13:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:03,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:03,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:03,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:03,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:08,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:08,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 04:13:08,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:08,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 04:13:08,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:13:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:13:08,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:08,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:08,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:08,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:08,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:08,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:08,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:08,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:08,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:08,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:13:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:08,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:08,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:09,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:09,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:13:09,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:09,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-27 04:13:09,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:13:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:13:09,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:09,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 04:13:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:10,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:10,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:10,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:10,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:13:10,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-27 04:13:10,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:13:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:13:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:10,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 04:13:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:10,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:10,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:10,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:13:10,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-27 04:13:10,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:13:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:13:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5919 backedges. 1728 proven. 4032 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-27 04:13:10,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783734024] [2020-10-27 04:13:10,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:10,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-27 04:13:10,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136767988] [2020-10-27 04:13:10,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-27 04:13:10,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:10,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-27 04:13:10,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=2053, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 04:13:10,681 INFO L87 Difference]: Start difference. First operand 122 states and 126 transitions. Second operand 53 states. [2020-10-27 04:13:12,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:12,792 INFO L93 Difference]: Finished difference Result 195 states and 207 transitions. [2020-10-27 04:13:12,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 04:13:12,793 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 226 [2020-10-27 04:13:12,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:12,794 INFO L225 Difference]: With dead ends: 195 [2020-10-27 04:13:12,794 INFO L226 Difference]: Without dead ends: 128 [2020-10-27 04:13:12,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1403, Invalid=4603, Unknown=0, NotChecked=0, Total=6006 [2020-10-27 04:13:12,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-27 04:13:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2020-10-27 04:13:12,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 04:13:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2020-10-27 04:13:12,808 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 226 [2020-10-27 04:13:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:12,809 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 130 transitions. [2020-10-27 04:13:12,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-27 04:13:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 130 transitions. [2020-10-27 04:13:12,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-27 04:13:12,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:12,811 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 25, 25, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:12,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 04:13:12,811 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:12,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:12,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1756447759, now seen corresponding path program 25 times [2020-10-27 04:13:12,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:12,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074875008] [2020-10-27 04:13:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:12,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:12,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:13,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:17,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:17,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 04:13:17,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:17,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-27 04:13:17,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:17,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:13:17,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:17,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:13:17,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:18,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:18,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:18,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:18,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:18,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:18,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:18,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:18,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:13:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:18,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:18,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:18,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 04:13:18,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:18,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-27 04:13:18,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:13:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:13:18,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 04:13:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:19,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:19,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:20,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:20,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 04:13:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:20,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-27 04:13:20,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:13:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:13:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:20,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-27 04:13:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:20,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:20,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:20,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:20,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 04:13:20,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:20,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-27 04:13:20,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:20,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:13:20,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:20,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:13:20,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6415 backedges. 1875 proven. 4375 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-27 04:13:20,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074875008] [2020-10-27 04:13:20,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:20,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-27 04:13:20,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016387659] [2020-10-27 04:13:20,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-27 04:13:20,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:20,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-27 04:13:20,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=2213, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 04:13:20,346 INFO L87 Difference]: Start difference. First operand 126 states and 130 transitions. Second operand 55 states. [2020-10-27 04:13:22,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:22,690 INFO L93 Difference]: Finished difference Result 201 states and 213 transitions. [2020-10-27 04:13:22,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-27 04:13:22,691 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 234 [2020-10-27 04:13:22,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:22,692 INFO L225 Difference]: With dead ends: 201 [2020-10-27 04:13:22,692 INFO L226 Difference]: Without dead ends: 132 [2020-10-27 04:13:22,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1511, Invalid=4969, Unknown=0, NotChecked=0, Total=6480 [2020-10-27 04:13:22,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-27 04:13:22,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-10-27 04:13:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 04:13:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2020-10-27 04:13:22,702 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 234 [2020-10-27 04:13:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:22,702 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2020-10-27 04:13:22,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-27 04:13:22,703 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2020-10-27 04:13:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-27 04:13:22,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:22,704 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 26, 26, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:22,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 04:13:22,705 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:22,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:22,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1969799761, now seen corresponding path program 26 times [2020-10-27 04:13:22,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:22,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087879538] [2020-10-27 04:13:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:22,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:22,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:22,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:27,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-27 04:13:27,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-27 04:13:27,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:27,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:13:27,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:27,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:13:27,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:28,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:28,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:28,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:28,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:28,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:28,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:28,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:28,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:28,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:13:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:28,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:28,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:28,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:28,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:13:28,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 04:13:28,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:13:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:13:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 04:13:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:29,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:29,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:30,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:30,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:13:30,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-27 04:13:30,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:13:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:13:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:30,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-27 04:13:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:30,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:30,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:30,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:30,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:13:30,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:30,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-27 04:13:30,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:30,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:13:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:13:30,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6931 backedges. 2028 proven. 4732 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-27 04:13:30,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087879538] [2020-10-27 04:13:30,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:30,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-27 04:13:30,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678886958] [2020-10-27 04:13:30,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-27 04:13:30,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:30,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-27 04:13:30,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=813, Invalid=2379, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 04:13:30,463 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand 57 states. [2020-10-27 04:13:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:33,044 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2020-10-27 04:13:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-27 04:13:33,045 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 242 [2020-10-27 04:13:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:33,049 INFO L225 Difference]: With dead ends: 207 [2020-10-27 04:13:33,049 INFO L226 Difference]: Without dead ends: 136 [2020-10-27 04:13:33,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1623, Invalid=5349, Unknown=0, NotChecked=0, Total=6972 [2020-10-27 04:13:33,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-27 04:13:33,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-10-27 04:13:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-27 04:13:33,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2020-10-27 04:13:33,059 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 242 [2020-10-27 04:13:33,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:33,059 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2020-10-27 04:13:33,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-27 04:13:33,060 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2020-10-27 04:13:33,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-27 04:13:33,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:33,061 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:33,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 04:13:33,061 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:33,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:33,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1426276017, now seen corresponding path program 27 times [2020-10-27 04:13:33,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:33,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907728987] [2020-10-27 04:13:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:33,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:33,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:33,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:33,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:38,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-27 04:13:38,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:38,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5198 [2020-10-27 04:13:38,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:13:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:13:38,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:38,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:38,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:38,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:38,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:38,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:38,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:13:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:38,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:39,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:13:39,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-27 04:13:39,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:13:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:13:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:40,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-27 04:13:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:40,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:40,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:40,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:40,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:13:40,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:40,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-27 04:13:40,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:40,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:13:40,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:40,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:13:40,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:40,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-27 04:13:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:40,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:40,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:40,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:13:40,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-27 04:13:40,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:13:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:13:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7467 backedges. 2187 proven. 5103 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-27 04:13:41,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907728987] [2020-10-27 04:13:41,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:41,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-27 04:13:41,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457032545] [2020-10-27 04:13:41,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-27 04:13:41,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:41,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-27 04:13:41,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=871, Invalid=2551, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 04:13:41,057 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand 59 states. [2020-10-27 04:13:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:43,727 INFO L93 Difference]: Finished difference Result 213 states and 225 transitions. [2020-10-27 04:13:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-27 04:13:43,728 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 250 [2020-10-27 04:13:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:43,730 INFO L225 Difference]: With dead ends: 213 [2020-10-27 04:13:43,730 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 04:13:43,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1739, Invalid=5743, Unknown=0, NotChecked=0, Total=7482 [2020-10-27 04:13:43,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 04:13:43,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2020-10-27 04:13:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-27 04:13:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions. [2020-10-27 04:13:43,740 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 250 [2020-10-27 04:13:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:43,741 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 142 transitions. [2020-10-27 04:13:43,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-27 04:13:43,741 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 142 transitions. [2020-10-27 04:13:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-27 04:13:43,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:43,743 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 28, 28, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:43,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 04:13:43,743 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:43,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:43,744 INFO L82 PathProgramCache]: Analyzing trace with hash -898158319, now seen corresponding path program 28 times [2020-10-27 04:13:43,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:43,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448517146] [2020-10-27 04:13:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:43,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:48,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:48,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-27 04:13:48,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 04:13:48,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 04:13:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:13:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:49,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:49,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:49,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:49,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:13:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:49,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:49,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:49,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 04:13:49,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-27 04:13:49,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 04:13:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:13:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:51,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 04:13:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:51,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:51,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 04:13:51,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:51,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-27 04:13:51,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:51,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 04:13:51,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:51,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:13:51,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:51,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-27 04:13:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:51,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 04:13:51,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:51,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-27 04:13:51,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:51,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 04:13:51,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:51,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:13:51,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8023 backedges. 2352 proven. 5488 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-27 04:13:51,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448517146] [2020-10-27 04:13:51,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:51,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-27 04:13:51,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403251437] [2020-10-27 04:13:51,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-27 04:13:51,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:51,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-27 04:13:51,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=931, Invalid=2729, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 04:13:51,885 INFO L87 Difference]: Start difference. First operand 138 states and 142 transitions. Second operand 61 states. [2020-10-27 04:13:54,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:54,618 INFO L93 Difference]: Finished difference Result 219 states and 231 transitions. [2020-10-27 04:13:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-27 04:13:54,618 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 258 [2020-10-27 04:13:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:54,619 INFO L225 Difference]: With dead ends: 219 [2020-10-27 04:13:54,619 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 04:13:54,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1246 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1859, Invalid=6151, Unknown=0, NotChecked=0, Total=8010 [2020-10-27 04:13:54,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 04:13:54,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2020-10-27 04:13:54,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-27 04:13:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 146 transitions. [2020-10-27 04:13:54,629 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 146 transitions. Word has length 258 [2020-10-27 04:13:54,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:54,630 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 146 transitions. [2020-10-27 04:13:54,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-27 04:13:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 146 transitions. [2020-10-27 04:13:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-27 04:13:54,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:54,632 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 29, 29, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:54,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 04:13:54,632 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:54,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1380083343, now seen corresponding path program 29 times [2020-10-27 04:13:54,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:54,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252040264] [2020-10-27 04:13:54,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:54,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:54,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:59,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:59,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-27 04:13:59,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-27 04:13:59,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 04:13:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 04:13:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:00,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:00,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:00,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:00,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:00,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:14:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:00,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking...