/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/max60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:11:46,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:11:46,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:11:46,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:11:46,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:11:46,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:11:46,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:11:46,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:11:46,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:11:46,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:11:46,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:11:46,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:11:46,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:11:46,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:11:46,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:11:46,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:11:46,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:11:46,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:11:46,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:11:46,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:11:46,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:11:46,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:11:46,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:11:46,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:11:46,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:11:46,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:11:46,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:11:46,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:11:46,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:11:46,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:11:46,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:11:46,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:11:46,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:11:46,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:11:46,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:11:46,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:11:46,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:11:46,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:11:46,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:11:46,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:11:46,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:11:46,468 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 04:11:46,521 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:11:46,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:11:46,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:11:46,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:11:46,526 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:11:46,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:11:46,526 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:11:46,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:11:46,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:11:46,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:11:46,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:11:46,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:11:46,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:11:46,528 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:11:46,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:11:46,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:11:46,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:11:46,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:11:46,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:11:46,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:11:46,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:11:46,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:11:46,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:11:46,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:11:46,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:11:46,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:11:46,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:11:46,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:11:46,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:11:46,532 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:11:46,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:11:46,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:11:46,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:11:46,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:11:46,950 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:11:46,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max60-2.i [2020-10-27 04:11:47,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a47f4d8e/1fe2efc9a0c84d959d3427740d0c5046/FLAG70734d6fb [2020-10-27 04:11:47,716 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:11:47,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max60-2.i [2020-10-27 04:11:47,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a47f4d8e/1fe2efc9a0c84d959d3427740d0c5046/FLAG70734d6fb [2020-10-27 04:11:48,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a47f4d8e/1fe2efc9a0c84d959d3427740d0c5046 [2020-10-27 04:11:48,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:11:48,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:11:48,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:11:48,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:11:48,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:11:48,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:11:48" (1/1) ... [2020-10-27 04:11:48,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c87a2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:48, skipping insertion in model container [2020-10-27 04:11:48,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:11:48" (1/1) ... [2020-10-27 04:11:48,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:11:48,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:11:48,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:11:48,369 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:11:48,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:11:48,414 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:11:48,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:48 WrapperNode [2020-10-27 04:11:48,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:11:48,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:11:48,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:11:48,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:11:48,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:48" (1/1) ... [2020-10-27 04:11:48,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:48" (1/1) ... [2020-10-27 04:11:48,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:48" (1/1) ... [2020-10-27 04:11:48,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:48" (1/1) ... [2020-10-27 04:11:48,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:48" (1/1) ... [2020-10-27 04:11:48,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:48" (1/1) ... [2020-10-27 04:11:48,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:48" (1/1) ... [2020-10-27 04:11:48,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:11:48,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:11:48,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:11:48,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:11:48,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:11:48,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:11:48,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:11:48,544 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:11:48,544 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-27 04:11:48,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:11:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:11:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:11:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 04:11:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 04:11:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:11:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:11:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 04:11:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-27 04:11:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:11:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:11:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:11:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:11:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:11:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:11:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:11:49,006 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:11:49,006 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 04:11:49,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:11:49 BoogieIcfgContainer [2020-10-27 04:11:49,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:11:49,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:11:49,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:11:49,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:11:49,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:11:48" (1/3) ... [2020-10-27 04:11:49,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6530bfd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:11:49, skipping insertion in model container [2020-10-27 04:11:49,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:11:48" (2/3) ... [2020-10-27 04:11:49,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6530bfd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:11:49, skipping insertion in model container [2020-10-27 04:11:49,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:11:49" (3/3) ... [2020-10-27 04:11:49,018 INFO L111 eAbstractionObserver]: Analyzing ICFG max60-2.i [2020-10-27 04:11:49,031 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:11:49,037 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:11:49,053 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:11:49,084 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:11:49,084 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:11:49,084 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:11:49,085 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:11:49,085 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:11:49,085 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:11:49,085 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:11:49,086 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:11:49,105 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-27 04:11:49,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:11:49,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:49,114 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 04:11:49,114 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:49,121 INFO L82 PathProgramCache]: Analyzing trace with hash -122162658, now seen corresponding path program 1 times [2020-10-27 04:11:49,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:49,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056449007] [2020-10-27 04:11:49,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:49,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:49,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:49,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:49,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:51,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:11:51,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:11:51,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1831 [2020-10-27 04:11:51,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:51,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:11:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:11:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:11:51,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:51,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:51,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:51,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:11:51,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:51,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:11:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:51,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:51,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:11:51,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:51,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:11:51,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:11:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:51,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:51,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:11:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:51,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:51,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:11:51,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:51,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:11:51,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:51,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:11:51,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:51,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:11:51,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:11:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:51,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:51,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:11:51,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:11:51,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:11:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:11:51,334 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 04:11:51,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056449007] [2020-10-27 04:11:51,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:11:51,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:11:51,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040002822] [2020-10-27 04:11:51,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:11:51,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:51,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:11:51,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:11:51,380 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-10-27 04:11:51,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:51,571 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-10-27 04:11:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 04:11:51,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 04:11:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:51,587 INFO L225 Difference]: With dead ends: 66 [2020-10-27 04:11:51,587 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 04:11:51,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:11:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 04:11:51,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-27 04:11:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 04:11:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-27 04:11:51,661 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 34 [2020-10-27 04:11:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:51,662 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-27 04:11:51,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:11:51,662 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-27 04:11:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 04:11:51,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:51,667 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, 1, 1] [2020-10-27 04:11:51,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:11:51,668 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:51,668 INFO L82 PathProgramCache]: Analyzing trace with hash -839912781, now seen corresponding path program 1 times [2020-10-27 04:11:51,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:51,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400195110] [2020-10-27 04:11:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:51,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:51,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:54,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:11:54,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:11:54,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2533 [2020-10-27 04:11:54,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:54,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:11:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:11:54,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:54,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:54,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:54,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:54,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:54,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:11:54,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:54,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:11:54,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 04:11:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:54,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:11:54,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:54,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:11:54,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:11:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:11:54,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:54,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 04:11:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:54,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:54,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:11:54,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:54,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:11:54,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:11:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:11:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:11:54,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:11:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:54,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:54,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:11:54,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:54,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:11:54,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:11:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:11:54,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:11:54,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400195110] [2020-10-27 04:11:54,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:54,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 04:11:54,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445865526] [2020-10-27 04:11:54,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:11:54,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:54,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:11:54,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:11:54,409 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2020-10-27 04:11:54,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:54,633 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2020-10-27 04:11:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:11:54,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-27 04:11:54,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:54,635 INFO L225 Difference]: With dead ends: 60 [2020-10-27 04:11:54,635 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 04:11:54,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:11:54,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 04:11:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-10-27 04:11:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 04:11:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-27 04:11:54,654 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 36 [2020-10-27 04:11:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:54,655 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-27 04:11:54,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:11:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-27 04:11:54,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 04:11:54,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:54,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 04:11:54,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:11:54,662 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:54,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:54,663 INFO L82 PathProgramCache]: Analyzing trace with hash -467101424, now seen corresponding path program 1 times [2020-10-27 04:11:54,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:54,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838676292] [2020-10-27 04:11:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:54,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:55,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:11:59,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:11:59,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:11:59,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:11:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:11:59,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:59,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:59,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:59,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:59,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:11:59,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:59,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 04:11:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:59,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:11:59,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:59,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:11:59,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:11:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:11:59,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:11:59,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 04:11:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:59,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:11:59,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 04:11:59,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:11:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:11:59,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:59,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:11:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:59,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:11:59,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:11:59,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:11:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:11:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 04:11:59,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838676292] [2020-10-27 04:11:59,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:59,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 04:11:59,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485526194] [2020-10-27 04:11:59,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:11:59,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:59,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:11:59,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:11:59,925 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 8 states. [2020-10-27 04:12:00,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:00,161 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2020-10-27 04:12:00,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:12:00,162 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-27 04:12:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:00,163 INFO L225 Difference]: With dead ends: 67 [2020-10-27 04:12:00,163 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 04:12:00,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:12:00,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 04:12:00,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-27 04:12:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 04:12:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-27 04:12:00,187 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 50 [2020-10-27 04:12:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:00,187 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-27 04:12:00,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:12:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-27 04:12:00,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 04:12:00,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:00,190 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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 04:12:00,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:12:00,191 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:00,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:00,193 INFO L82 PathProgramCache]: Analyzing trace with hash -240181139, now seen corresponding path program 2 times [2020-10-27 04:12:00,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:00,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481770704] [2020-10-27 04:12:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:05,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:05,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 04:12:05,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:05,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:12:05,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:12:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:12:05,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:05,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:05,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:05,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:05,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:05,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:12:05,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:05,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:05,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:05,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:05,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:12:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:05,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:05,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:12:05,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:05,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 04:12:05,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:12:05,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:05,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:12:05,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:05,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 04:12:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:05,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:05,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:05,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:05,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:12:05,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 04:12:05,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:05,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:12:05,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:05,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:12:05,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:12:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:05,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:05,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:05,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:05,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:12:05,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 04:12:05,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:05,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:12:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:12:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 04:12:05,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481770704] [2020-10-27 04:12:05,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:05,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 04:12:05,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262997796] [2020-10-27 04:12:05,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:12:05,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:05,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:12:05,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:12:05,496 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 10 states. [2020-10-27 04:12:05,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:05,772 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2020-10-27 04:12:05,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 04:12:05,773 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-10-27 04:12:05,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:05,774 INFO L225 Difference]: With dead ends: 77 [2020-10-27 04:12:05,775 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 04:12:05,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:12:05,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 04:12:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-10-27 04:12:05,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 04:12:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-27 04:12:05,785 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 64 [2020-10-27 04:12:05,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:05,785 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-27 04:12:05,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:12:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-27 04:12:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 04:12:05,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:05,787 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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 04:12:05,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:12:05,787 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:05,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:05,788 INFO L82 PathProgramCache]: Analyzing trace with hash 476260554, now seen corresponding path program 3 times [2020-10-27 04:12:05,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:05,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680915902] [2020-10-27 04:12:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:05,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:05,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:09,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:10,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:10,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 04:12:10,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:12:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:12:10,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:12:10,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:10,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:10,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:10,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:10,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:10,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:10,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:12:10,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:10,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:10,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:10,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 04:12:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:10,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:10,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:12:10,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:10,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 04:12:10,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:12:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:12:10,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:11,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:12:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:11,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:11,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:11,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:11,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:12:11,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 04:12:11,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:12:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:12:11,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:11,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:12:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:11,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:11,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:11,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:12:11,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 04:12:11,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:12:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:12:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 45 proven. 106 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 04:12:11,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680915902] [2020-10-27 04:12:11,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:11,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 04:12:11,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513453119] [2020-10-27 04:12:11,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:12:11,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:11,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:12:11,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:12:11,170 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 12 states. [2020-10-27 04:12:11,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:11,462 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2020-10-27 04:12:11,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:12:11,462 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-10-27 04:12:11,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:11,463 INFO L225 Difference]: With dead ends: 87 [2020-10-27 04:12:11,463 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 04:12:11,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:12:11,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 04:12:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-27 04:12:11,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 04:12:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-10-27 04:12:11,473 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 78 [2020-10-27 04:12:11,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:11,473 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-10-27 04:12:11,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:12:11,473 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-10-27 04:12:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 04:12:11,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:11,475 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 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 04:12:11,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:12:11,475 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:11,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:11,476 INFO L82 PathProgramCache]: Analyzing trace with hash -671329753, now seen corresponding path program 4 times [2020-10-27 04:12:11,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:11,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336695964] [2020-10-27 04:12:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:11,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:11,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:11,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:16,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 04:12:16,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:16,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:12:16,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:12:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:12:16,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:16,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:16,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:16,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:16,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:12:16,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:16,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 04:12:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:16,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:12:16,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 04:12:16,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:12:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:12:16,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 04:12:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:16,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:16,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:12:16,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 04:12:16,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:12:16,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:12:16,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:12:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:16,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:17,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:17,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:12:17,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:17,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 04:12:17,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:17,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:17,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:17,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:12:17,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 84 proven. 193 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 04:12:17,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336695964] [2020-10-27 04:12:17,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:17,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 04:12:17,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072220838] [2020-10-27 04:12:17,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:12:17,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:17,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:12:17,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:12:17,080 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 14 states. [2020-10-27 04:12:17,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:17,444 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2020-10-27 04:12:17,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:12:17,445 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-27 04:12:17,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:17,448 INFO L225 Difference]: With dead ends: 97 [2020-10-27 04:12:17,448 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 04:12:17,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:12:17,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 04:12:17,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-10-27 04:12:17,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 04:12:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-10-27 04:12:17,464 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 92 [2020-10-27 04:12:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:17,465 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-10-27 04:12:17,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:12:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-10-27 04:12:17,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:12:17,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:17,474 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 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 04:12:17,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:12:17,474 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:17,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:17,475 INFO L82 PathProgramCache]: Analyzing trace with hash 604650628, now seen corresponding path program 5 times [2020-10-27 04:12:17,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:17,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129414968] [2020-10-27 04:12:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:17,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:17,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:22,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:12:22,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:22,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 04:12:22,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:12:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:12:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:22,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:22,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:22,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:12:22,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:22,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:12:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:22,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:22,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:12:22,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:22,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 04:12:22,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:12:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:12:22,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:12:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:22,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:12:22,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:22,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 04:12:22,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:22,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:12:22,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:22,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:12:22,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:22,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:12:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:22,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:23,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:23,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:12:23,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:23,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 04:12:23,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:12:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:23,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:12:23,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 135 proven. 306 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 04:12:23,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129414968] [2020-10-27 04:12:23,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:23,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 04:12:23,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418037945] [2020-10-27 04:12:23,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:12:23,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:23,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:12:23,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:12:23,062 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 16 states. [2020-10-27 04:12:23,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:23,610 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2020-10-27 04:12:23,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:12:23,610 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-10-27 04:12:23,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:23,612 INFO L225 Difference]: With dead ends: 107 [2020-10-27 04:12:23,612 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 04:12:23,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:12:23,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 04:12:23,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-10-27 04:12:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 04:12:23,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-10-27 04:12:23,626 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 106 [2020-10-27 04:12:23,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:23,635 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-10-27 04:12:23,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 04:12:23,635 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-10-27 04:12:23,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 04:12:23,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:23,636 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 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 04:12:23,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:12:23,640 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:23,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:23,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1240762337, now seen corresponding path program 6 times [2020-10-27 04:12:23,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:23,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27235198] [2020-10-27 04:12:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:23,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:23,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:24,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:28,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:28,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 04:12:28,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:28,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 04:12:28,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:12:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:12:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:28,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:28,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:28,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:28,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:28,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:28,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:28,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 04:12:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:28,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:28,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:28,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:28,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:12:28,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:28,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 04:12:28,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:12:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:12:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:29,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:12:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:29,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:29,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:29,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:12:29,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 04:12:29,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:12:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:12:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:29,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:12:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:29,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:29,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:29,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:12:29,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:29,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 04:12:29,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:12:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:12:29,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 198 proven. 445 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-27 04:12:29,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27235198] [2020-10-27 04:12:29,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:29,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 04:12:29,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846625856] [2020-10-27 04:12:29,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 04:12:29,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:29,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 04:12:29,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:12:29,338 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 18 states. [2020-10-27 04:12:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:29,877 INFO L93 Difference]: Finished difference Result 117 states and 143 transitions. [2020-10-27 04:12:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:12:29,878 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 120 [2020-10-27 04:12:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:29,879 INFO L225 Difference]: With dead ends: 117 [2020-10-27 04:12:29,879 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 04:12:29,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:12:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 04:12:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2020-10-27 04:12:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 04:12:29,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2020-10-27 04:12:29,903 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 120 [2020-10-27 04:12:29,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:29,903 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2020-10-27 04:12:29,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 04:12:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2020-10-27 04:12:29,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 04:12:29,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:29,908 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 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 04:12:29,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:12:29,909 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:29,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:29,909 INFO L82 PathProgramCache]: Analyzing trace with hash 452645950, now seen corresponding path program 7 times [2020-10-27 04:12:29,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:29,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48557821] [2020-10-27 04:12:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:29,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:34,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:34,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 04:12:34,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:34,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 04:12:34,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:34,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:12:34,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:34,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:12:34,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:35,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:35,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:35,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:35,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:35,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:12:35,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:35,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:35,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:35,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:12:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:35,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:35,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:35,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:35,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:12:35,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:35,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 04:12:35,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:12:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:12:35,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:35,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:12:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:35,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:35,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:35,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:35,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:12:35,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 04:12:35,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:12:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:12:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:35,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:12:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:35,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:35,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:35,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:35,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:12:35,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:35,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 04:12:35,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:35,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:12:35,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:35,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:12:35,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 273 proven. 610 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 04:12:35,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48557821] [2020-10-27 04:12:35,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:35,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 04:12:35,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806914360] [2020-10-27 04:12:35,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 04:12:35,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:35,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 04:12:35,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:12:35,755 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand 20 states. [2020-10-27 04:12:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:36,342 INFO L93 Difference]: Finished difference Result 127 states and 155 transitions. [2020-10-27 04:12:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:12:36,343 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 134 [2020-10-27 04:12:36,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:36,344 INFO L225 Difference]: With dead ends: 127 [2020-10-27 04:12:36,344 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 04:12:36,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:12:36,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 04:12:36,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-10-27 04:12:36,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 04:12:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2020-10-27 04:12:36,366 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 134 [2020-10-27 04:12:36,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:36,368 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2020-10-27 04:12:36,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 04:12:36,368 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2020-10-27 04:12:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 04:12:36,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:36,371 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 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 04:12:36,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:12:36,372 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:36,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:36,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1372274277, now seen corresponding path program 8 times [2020-10-27 04:12:36,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:36,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771588944] [2020-10-27 04:12:36,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:36,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:36,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:36,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:41,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:41,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 04:12:41,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:41,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:12:41,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:12:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:12:41,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:41,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:41,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:41,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:41,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:41,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:12:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:41,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:41,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:12:41,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:41,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-27 04:12:41,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:12:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:41,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:12:41,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:12:41,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:12:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:42,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:42,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:12:42,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:42,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-27 04:12:42,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:12:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:12:42,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:42,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 04:12:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:42,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:42,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:42,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:42,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:12:42,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 04:12:42,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:12:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:12:42,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1272 backedges. 360 proven. 801 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-27 04:12:42,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771588944] [2020-10-27 04:12:42,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:42,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 04:12:42,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205351904] [2020-10-27 04:12:42,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 04:12:42,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:42,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 04:12:42,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:12:42,451 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand 22 states. [2020-10-27 04:12:43,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:43,112 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2020-10-27 04:12:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 04:12:43,113 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 148 [2020-10-27 04:12:43,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:43,114 INFO L225 Difference]: With dead ends: 137 [2020-10-27 04:12:43,114 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 04:12:43,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:12:43,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 04:12:43,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2020-10-27 04:12:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 04:12:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2020-10-27 04:12:43,124 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 148 [2020-10-27 04:12:43,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:43,125 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2020-10-27 04:12:43,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 04:12:43,125 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2020-10-27 04:12:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 04:12:43,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:43,127 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 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 04:12:43,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:12:43,128 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:43,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:43,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1634603016, now seen corresponding path program 9 times [2020-10-27 04:12:43,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:43,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284178594] [2020-10-27 04:12:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:43,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:43,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:43,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:43,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:48,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:48,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 04:12:48,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:48,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:12:48,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:48,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:12:48,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:48,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:12:48,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:48,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:48,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:48,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:48,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:48,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:48,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:48,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:48,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:48,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:48,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:48,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:48,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:12:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:48,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:48,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:48,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:48,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:12:48,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:48,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-27 04:12:48,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:12:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:12:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:12:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:48,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:48,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:48,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:12:48,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:48,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-27 04:12:48,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:12:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:12:48,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:48,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 04:12:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:49,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:49,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:49,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:49,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:12:49,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:49,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 04:12:49,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:12:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:12:49,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 459 proven. 1018 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 04:12:49,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284178594] [2020-10-27 04:12:49,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:49,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 04:12:49,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599394351] [2020-10-27 04:12:49,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 04:12:49,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:49,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 04:12:49,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:12:49,235 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand 24 states. [2020-10-27 04:12:50,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:50,049 INFO L93 Difference]: Finished difference Result 147 states and 179 transitions. [2020-10-27 04:12:50,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 04:12:50,055 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 162 [2020-10-27 04:12:50,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:50,057 INFO L225 Difference]: With dead ends: 147 [2020-10-27 04:12:50,057 INFO L226 Difference]: Without dead ends: 92 [2020-10-27 04:12:50,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=275, Invalid=847, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 04:12:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-27 04:12:50,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-10-27 04:12:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 04:12:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-10-27 04:12:50,081 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 162 [2020-10-27 04:12:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:50,082 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-10-27 04:12:50,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 04:12:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-10-27 04:12:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 04:12:50,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:50,087 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 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 04:12:50,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:12:50,088 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:50,088 INFO L82 PathProgramCache]: Analyzing trace with hash -925237419, now seen corresponding path program 10 times [2020-10-27 04:12:50,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:50,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571900396] [2020-10-27 04:12:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:55,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:55,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 04:12:55,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 04:12:55,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:12:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:12:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:55,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:55,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:55,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:55,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:55,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:55,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:12:55,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:55,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:55,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:12:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:55,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:55,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:55,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:55,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:55,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 04:12:55,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:12:55,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:55,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:12:55,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:55,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:12:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:55,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:55,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:55,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:55,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:55,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-27 04:12:55,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:12:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:12:55,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:56,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 04:12:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:56,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:56,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:56,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:56,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:56,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-27 04:12:56,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:56,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:12:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:12:56,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1966 backedges. 570 proven. 1261 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-27 04:12:56,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571900396] [2020-10-27 04:12:56,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:56,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 04:12:56,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034261799] [2020-10-27 04:12:56,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 04:12:56,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:56,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 04:12:56,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-27 04:12:56,300 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 26 states. [2020-10-27 04:12:57,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:57,232 INFO L93 Difference]: Finished difference Result 157 states and 191 transitions. [2020-10-27 04:12:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 04:12:57,232 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 176 [2020-10-27 04:12:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:57,234 INFO L225 Difference]: With dead ends: 157 [2020-10-27 04:12:57,234 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 04:12:57,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 04:12:57,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 04:12:57,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2020-10-27 04:12:57,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 04:12:57,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-10-27 04:12:57,243 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 176 [2020-10-27 04:12:57,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:57,244 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-10-27 04:12:57,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 04:12:57,244 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-10-27 04:12:57,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-27 04:12:57,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:57,246 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 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 04:12:57,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:12:57,246 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:57,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:57,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1985179726, now seen corresponding path program 11 times [2020-10-27 04:12:57,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:57,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894069167] [2020-10-27 04:12:57,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:57,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:57,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:02,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:02,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 04:13:02,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 04:13:02,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:13:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:13:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:02,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:02,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:02,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:02,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:02,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:02,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:02,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:13:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:02,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:02,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:02,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:02,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:13:02,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 04:13:02,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:13:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:13:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:13:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:02,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:02,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:03,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:03,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:13:03,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:03,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-27 04:13:03,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:13:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:03,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:13:03,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:03,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 04:13:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:03,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:03,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:03,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:13:03,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:03,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-27 04:13:03,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:03,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:13:03,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:13:03,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 693 proven. 1530 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-27 04:13:03,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894069167] [2020-10-27 04:13:03,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:03,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 04:13:03,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184484523] [2020-10-27 04:13:03,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 04:13:03,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:03,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 04:13:03,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:13:03,579 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 28 states. [2020-10-27 04:13:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:04,571 INFO L93 Difference]: Finished difference Result 167 states and 203 transitions. [2020-10-27 04:13:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 04:13:04,572 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 190 [2020-10-27 04:13:04,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:04,573 INFO L225 Difference]: With dead ends: 167 [2020-10-27 04:13:04,574 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 04:13:04,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 04:13:04,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 04:13:04,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2020-10-27 04:13:04,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 04:13:04,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2020-10-27 04:13:04,593 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 190 [2020-10-27 04:13:04,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:04,594 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2020-10-27 04:13:04,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 04:13:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2020-10-27 04:13:04,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 04:13:04,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:04,598 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 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 04:13:04,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:13:04,599 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:04,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:04,599 INFO L82 PathProgramCache]: Analyzing trace with hash 2072068367, now seen corresponding path program 12 times [2020-10-27 04:13:04,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:04,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117517231] [2020-10-27 04:13:04,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:04,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:04,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:09,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:09,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 04:13:09,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:09,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:13:09,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:13:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:13:09,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:09,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:09,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:09,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:09,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:09,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:09,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:09,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:09,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:09,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 04:13:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:09,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:09,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:10,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:10,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:13:10,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:10,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 04:13:10,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:10,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:13:10,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:10,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:13:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:10,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 04:13:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:10,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:10,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:10,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:13:10,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-27 04:13:10,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:13:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:13:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:10,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 04:13:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:10,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:10,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:10,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:10,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:13:10,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:10,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-27 04:13:10,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:13:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:10,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:13:10,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 828 proven. 1825 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-27 04:13:10,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117517231] [2020-10-27 04:13:10,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:10,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 04:13:10,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928045806] [2020-10-27 04:13:10,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 04:13:10,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:10,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 04:13:10,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:13:10,876 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand 30 states. [2020-10-27 04:13:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:11,978 INFO L93 Difference]: Finished difference Result 177 states and 215 transitions. [2020-10-27 04:13:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 04:13:11,978 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 204 [2020-10-27 04:13:11,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:11,980 INFO L225 Difference]: With dead ends: 177 [2020-10-27 04:13:11,980 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 04:13:11,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=434, Invalid=1372, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 04:13:11,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 04:13:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2020-10-27 04:13:11,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 04:13:11,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2020-10-27 04:13:11,997 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 204 [2020-10-27 04:13:11,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:11,997 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2020-10-27 04:13:11,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 04:13:11,997 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2020-10-27 04:13:11,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 04:13:11,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:11,999 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 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 04:13:11,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:13:11,999 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:12,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:12,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1264077972, now seen corresponding path program 13 times [2020-10-27 04:13:12,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:12,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017310148] [2020-10-27 04:13:12,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:12,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:12,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:12,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:12,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:12,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:17,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:17,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 04:13:17,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:17,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:13:17,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:13:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:13:17,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:17,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:17,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:17,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:17,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:17,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:17,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:17,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:17,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:17,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:13:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:17,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:17,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:17,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:17,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:13:17,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-27 04:13:17,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:13:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:13:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:17,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:13:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:17,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:17,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:18,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:18,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:13:18,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 04:13:18,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:13:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:13:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:18,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 04:13:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:18,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:18,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:18,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:18,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:13:18,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:18,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-27 04:13:18,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:13:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:13:18,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3292 backedges. 975 proven. 2146 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-27 04:13:18,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017310148] [2020-10-27 04:13:18,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:18,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 04:13:18,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343189030] [2020-10-27 04:13:18,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 04:13:18,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:18,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 04:13:18,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-10-27 04:13:18,321 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand 32 states. [2020-10-27 04:13:19,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:19,505 INFO L93 Difference]: Finished difference Result 187 states and 227 transitions. [2020-10-27 04:13:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 04:13:19,506 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 218 [2020-10-27 04:13:19,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:19,507 INFO L225 Difference]: With dead ends: 187 [2020-10-27 04:13:19,507 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 04:13:19,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=495, Invalid=1575, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 04:13:19,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 04:13:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2020-10-27 04:13:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 04:13:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2020-10-27 04:13:19,521 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 218 [2020-10-27 04:13:19,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:19,522 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2020-10-27 04:13:19,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 04:13:19,522 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2020-10-27 04:13:19,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-27 04:13:19,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:19,524 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 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 04:13:19,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:13:19,525 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:19,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2058910007, now seen corresponding path program 14 times [2020-10-27 04:13:19,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:19,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248329482] [2020-10-27 04:13:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:19,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:19,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:24,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:24,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-27 04:13:24,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:24,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 04:13:24,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:13:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:13:24,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:24,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:24,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:24,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:24,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:24,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:24,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:24,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:24,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:24,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:24,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:13:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:24,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:25,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:25,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 04:13:25,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:25,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-27 04:13:25,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:13:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:13:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:25,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 04:13:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:25,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:25,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:25,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:25,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 04:13:25,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:25,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-27 04:13:25,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:13:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:13:25,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-27 04:13:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:25,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:25,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:26,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:26,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 04:13:26,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-27 04:13:26,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:13:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:13:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3810 backedges. 1134 proven. 2493 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-27 04:13:26,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248329482] [2020-10-27 04:13:26,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:26,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 04:13:26,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406352112] [2020-10-27 04:13:26,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 04:13:26,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:26,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 04:13:26,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 04:13:26,226 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand 34 states. [2020-10-27 04:13:27,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:27,546 INFO L93 Difference]: Finished difference Result 197 states and 239 transitions. [2020-10-27 04:13:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 04:13:27,547 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 232 [2020-10-27 04:13:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:27,549 INFO L225 Difference]: With dead ends: 197 [2020-10-27 04:13:27,549 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 04:13:27,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=560, Invalid=1792, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 04:13:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 04:13:27,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2020-10-27 04:13:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-27 04:13:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-10-27 04:13:27,558 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 232 [2020-10-27 04:13:27,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:27,559 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-10-27 04:13:27,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 04:13:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-10-27 04:13:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-27 04:13:27,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:27,561 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 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 04:13:27,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:13:27,561 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:27,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:27,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1251976410, now seen corresponding path program 15 times [2020-10-27 04:13:27,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:27,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321638376] [2020-10-27 04:13:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:27,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:32,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 04:13:32,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 04:13:32,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:13:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:13:32,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:32,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:32,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:32,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:32,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:32,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:32,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:32,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:13:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:33,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:33,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:13:33,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:33,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-27 04:13:33,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:13:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:13:33,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:33,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 04:13:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:33,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:33,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:34,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:34,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:13:34,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-27 04:13:34,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:13:34,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:34,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:13:34,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:34,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 04:13:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:34,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:34,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:13:34,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:34,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-27 04:13:34,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:13:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:13:34,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4366 backedges. 1305 proven. 2866 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-27 04:13:34,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321638376] [2020-10-27 04:13:34,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:34,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 04:13:34,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188105646] [2020-10-27 04:13:34,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 04:13:34,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:34,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 04:13:34,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:13:34,574 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 36 states. [2020-10-27 04:13:36,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:36,014 INFO L93 Difference]: Finished difference Result 207 states and 251 transitions. [2020-10-27 04:13:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 04:13:36,015 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 246 [2020-10-27 04:13:36,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:36,017 INFO L225 Difference]: With dead ends: 207 [2020-10-27 04:13:36,017 INFO L226 Difference]: Without dead ends: 128 [2020-10-27 04:13:36,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=629, Invalid=2023, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 04:13:36,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-27 04:13:36,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2020-10-27 04:13:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 04:13:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-10-27 04:13:36,028 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 246 [2020-10-27 04:13:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:36,028 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-10-27 04:13:36,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 04:13:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-10-27 04:13:36,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 04:13:36,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:36,030 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 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 04:13:36,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:13:36,031 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:36,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1120522371, now seen corresponding path program 16 times [2020-10-27 04:13:36,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:36,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961647740] [2020-10-27 04:13:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:36,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:36,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:36,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:36,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:41,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:41,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 04:13:41,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:41,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:13:41,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:13:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:13:41,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:41,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:41,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:41,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:41,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:41,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:41,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:41,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:41,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:13:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:41,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:41,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:41,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 04:13:41,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:41,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-27 04:13:41,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:13:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:13:41,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:42,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 04:13:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:42,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:42,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:42,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 04:13:42,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:42,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-27 04:13:42,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:13:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:13:42,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:42,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-27 04:13:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:42,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:42,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:42,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:42,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 04:13:42,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-27 04:13:42,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:13:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:42,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:13:42,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 1488 proven. 3265 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-27 04:13:42,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961647740] [2020-10-27 04:13:42,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:42,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 04:13:42,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599256559] [2020-10-27 04:13:42,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 04:13:42,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:42,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 04:13:42,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 04:13:42,971 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 38 states. [2020-10-27 04:13:44,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:44,415 INFO L93 Difference]: Finished difference Result 217 states and 263 transitions. [2020-10-27 04:13:44,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 04:13:44,416 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 260 [2020-10-27 04:13:44,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:44,418 INFO L225 Difference]: With dead ends: 217 [2020-10-27 04:13:44,418 INFO L226 Difference]: Without dead ends: 134 [2020-10-27 04:13:44,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=702, Invalid=2268, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 04:13:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-27 04:13:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2020-10-27 04:13:44,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 04:13:44,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-10-27 04:13:44,430 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 260 [2020-10-27 04:13:44,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:44,431 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-10-27 04:13:44,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 04:13:44,431 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-10-27 04:13:44,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-27 04:13:44,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:44,433 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 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 04:13:44,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:13:44,433 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:44,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:44,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1624013088, now seen corresponding path program 17 times [2020-10-27 04:13:44,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:44,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692017125] [2020-10-27 04:13:44,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:45,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:49,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:49,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-27 04:13:49,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:49,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 04:13:49,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:13:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:13:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:49,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:49,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:49,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:49,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:49,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:49,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:49,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:49,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:13:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:49,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:49,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 04:13:50,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:50,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-27 04:13:50,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:13:50,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:50,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 04:13:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 04:13:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:51,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 04:13:51,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:51,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-27 04:13:51,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:51,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:13:51,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:51,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 04:13:51,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:51,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-27 04:13:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:51,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:51,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 04:13:51,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:51,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-27 04:13:51,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:13:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 04:13:51,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:51,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5592 backedges. 1683 proven. 3690 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-27 04:13:51,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692017125] [2020-10-27 04:13:51,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:51,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 04:13:51,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897741165] [2020-10-27 04:13:51,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 04:13:51,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:51,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 04:13:51,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 04:13:51,774 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 40 states. [2020-10-27 04:13:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:53,496 INFO L93 Difference]: Finished difference Result 227 states and 275 transitions. [2020-10-27 04:13:53,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 04:13:53,499 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 274 [2020-10-27 04:13:53,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:53,500 INFO L225 Difference]: With dead ends: 227 [2020-10-27 04:13:53,501 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 04:13:53,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=779, Invalid=2527, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 04:13:53,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 04:13:53,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2020-10-27 04:13:53,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 04:13:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2020-10-27 04:13:53,519 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 274 [2020-10-27 04:13:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:53,520 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2020-10-27 04:13:53,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 04:13:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2020-10-27 04:13:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-27 04:13:53,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:53,524 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 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 04:13:53,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:13:53,524 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:53,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:53,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1847926333, now seen corresponding path program 18 times [2020-10-27 04:13:53,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:53,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272652575] [2020-10-27 04:13:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:53,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:53,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:53,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:58,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:58,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 04:13:58,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 04:13:58,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:13:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:13:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:59,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:59,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:59,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:59,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:59,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:59,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:13:59,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:59,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:59,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:59,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:59,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:59,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:13:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:59,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:59,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:59,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:13:59,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:59,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-27 04:13:59,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:13:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:13:59,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:00,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 04:14:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:00,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:00,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:14:00,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:00,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-27 04:14:00,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:14:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:14:00,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:00,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-27 04:14:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:01,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:01,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:14:01,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:01,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-27 04:14:01,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:01,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:14:01,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:01,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:14:01,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6262 backedges. 1890 proven. 4141 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 04:14:01,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272652575] [2020-10-27 04:14:01,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:01,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 04:14:01,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498080785] [2020-10-27 04:14:01,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 04:14:01,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:01,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 04:14:01,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 04:14:01,490 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand 42 states. [2020-10-27 04:14:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:03,101 INFO L93 Difference]: Finished difference Result 237 states and 287 transitions. [2020-10-27 04:14:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 04:14:03,102 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 288 [2020-10-27 04:14:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:03,103 INFO L225 Difference]: With dead ends: 237 [2020-10-27 04:14:03,103 INFO L226 Difference]: Without dead ends: 146 [2020-10-27 04:14:03,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=860, Invalid=2800, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 04:14:03,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-27 04:14:03,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2020-10-27 04:14:03,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-27 04:14:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 165 transitions. [2020-10-27 04:14:03,118 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 165 transitions. Word has length 288 [2020-10-27 04:14:03,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:03,119 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 165 transitions. [2020-10-27 04:14:03,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 04:14:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 165 transitions. [2020-10-27 04:14:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-27 04:14:03,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:03,121 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 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 04:14:03,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:14:03,121 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:03,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:03,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1023527270, now seen corresponding path program 19 times [2020-10-27 04:14:03,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:03,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512029573] [2020-10-27 04:14:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:03,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:03,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:03,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:08,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:08,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-27 04:14:08,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:08,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 04:14:08,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:14:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:14:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:08,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:08,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:08,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:08,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:08,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:08,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:08,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:14:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:08,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:09,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:09,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 04:14:09,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-27 04:14:09,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:09,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:14:09,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:09,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 04:14:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 04:14:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:09,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:09,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:10,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:10,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 04:14:10,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:10,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-27 04:14:10,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:14:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 04:14:10,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:10,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:14:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:10,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:10,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:10,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 04:14:10,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-27 04:14:10,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:14:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 04:14:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:11,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6970 backedges. 2109 proven. 4618 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-10-27 04:14:11,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512029573] [2020-10-27 04:14:11,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:11,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 04:14:11,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557150688] [2020-10-27 04:14:11,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 04:14:11,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:11,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 04:14:11,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 04:14:11,033 INFO L87 Difference]: Start difference. First operand 142 states and 165 transitions. Second operand 44 states. [2020-10-27 04:14:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:12,974 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2020-10-27 04:14:12,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 04:14:12,975 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 302 [2020-10-27 04:14:12,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:12,977 INFO L225 Difference]: With dead ends: 247 [2020-10-27 04:14:12,977 INFO L226 Difference]: Without dead ends: 152 [2020-10-27 04:14:12,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=945, Invalid=3087, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 04:14:12,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-27 04:14:12,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2020-10-27 04:14:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-27 04:14:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2020-10-27 04:14:12,990 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 302 [2020-10-27 04:14:12,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:12,990 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2020-10-27 04:14:12,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 04:14:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2020-10-27 04:14:12,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-27 04:14:12,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:12,993 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 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 04:14:12,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 04:14:12,993 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:12,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:12,994 INFO L82 PathProgramCache]: Analyzing trace with hash -554274825, now seen corresponding path program 20 times [2020-10-27 04:14:12,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:12,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803134013] [2020-10-27 04:14:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:13,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:13,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:13,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:18,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-27 04:14:18,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:18,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-27 04:14:18,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:14:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:18,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:14:18,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:18,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:18,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:18,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:18,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:18,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:14:18,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:18,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:18,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:18,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:18,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:18,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:14:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:18,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:19,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 04:14:19,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:19,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-27 04:14:19,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:14:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 04:14:19,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:19,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 04:14:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:19,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:20,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:20,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 04:14:20,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:20,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-27 04:14:20,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:14:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 04:14:20,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:20,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 04:14:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:20,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:20,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:21,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 04:14:21,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:21,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-27 04:14:21,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:21,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:14:21,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:21,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 04:14:21,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7716 backedges. 2340 proven. 5121 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-27 04:14:21,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803134013] [2020-10-27 04:14:21,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:21,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 04:14:21,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717822559] [2020-10-27 04:14:21,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 04:14:21,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:21,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 04:14:21,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 04:14:21,164 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 46 states. [2020-10-27 04:14:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:23,245 INFO L93 Difference]: Finished difference Result 257 states and 311 transitions. [2020-10-27 04:14:23,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 04:14:23,249 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 316 [2020-10-27 04:14:23,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:23,251 INFO L225 Difference]: With dead ends: 257 [2020-10-27 04:14:23,251 INFO L226 Difference]: Without dead ends: 158 [2020-10-27 04:14:23,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1034, Invalid=3388, Unknown=0, NotChecked=0, Total=4422 [2020-10-27 04:14:23,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-27 04:14:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2020-10-27 04:14:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 04:14:23,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 179 transitions. [2020-10-27 04:14:23,269 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 179 transitions. Word has length 316 [2020-10-27 04:14:23,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:23,269 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 179 transitions. [2020-10-27 04:14:23,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 04:14:23,270 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 179 transitions. [2020-10-27 04:14:23,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-27 04:14:23,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:23,272 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 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 04:14:23,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 04:14:23,273 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:23,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:23,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1864198740, now seen corresponding path program 21 times [2020-10-27 04:14:23,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:23,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384005231] [2020-10-27 04:14:23,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:23,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:23,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:23,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:23,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:23,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:28,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:28,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-27 04:14:28,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-27 04:14:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:14:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:14:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:28,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:28,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:28,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:28,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:28,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:28,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:28,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:14:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:28,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:29,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:29,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 04:14:29,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:29,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-27 04:14:29,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:29,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:14:29,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:29,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 04:14:29,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:30,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-27 04:14:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:30,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:30,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:30,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:30,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 04:14:30,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:30,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-27 04:14:30,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:30,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:14:30,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:30,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 04:14:30,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:30,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-27 04:14:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:30,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:31,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 04:14:31,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:31,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-27 04:14:31,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:31,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:14:31,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:31,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 04:14:31,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8500 backedges. 2583 proven. 5650 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-27 04:14:31,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384005231] [2020-10-27 04:14:31,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:31,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-27 04:14:31,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466832058] [2020-10-27 04:14:31,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-27 04:14:31,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:31,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-27 04:14:31,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 04:14:31,514 INFO L87 Difference]: Start difference. First operand 154 states and 179 transitions. Second operand 48 states. [2020-10-27 04:14:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:33,715 INFO L93 Difference]: Finished difference Result 267 states and 323 transitions. [2020-10-27 04:14:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 04:14:33,716 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 330 [2020-10-27 04:14:33,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:33,718 INFO L225 Difference]: With dead ends: 267 [2020-10-27 04:14:33,718 INFO L226 Difference]: Without dead ends: 164 [2020-10-27 04:14:33,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1127, Invalid=3703, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 04:14:33,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-27 04:14:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-10-27 04:14:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-27 04:14:33,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 186 transitions. [2020-10-27 04:14:33,730 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 186 transitions. Word has length 330 [2020-10-27 04:14:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:33,730 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 186 transitions. [2020-10-27 04:14:33,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-27 04:14:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 186 transitions. [2020-10-27 04:14:33,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-27 04:14:33,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:33,733 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 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 04:14:33,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 04:14:33,734 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:33,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:33,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1247462833, now seen corresponding path program 22 times [2020-10-27 04:14:33,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:33,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895784885] [2020-10-27 04:14:33,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:33,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:38,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-27 04:14:38,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:14:38,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:14:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:14:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:39,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:39,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:39,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:39,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:39,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:39,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:39,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:39,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:14:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:39,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:39,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:39,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 04:14:39,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-27 04:14:39,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:14:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:14:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-27 04:14:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:41,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:41,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 04:14:41,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:41,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-27 04:14:41,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:14:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:14:41,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:41,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-27 04:14:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:41,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:41,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:42,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:42,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 04:14:42,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:42,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-27 04:14:42,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:14:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:14:42,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9322 backedges. 2838 proven. 6205 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-10-27 04:14:42,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895784885] [2020-10-27 04:14:42,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:42,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-27 04:14:42,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273515709] [2020-10-27 04:14:42,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-27 04:14:42,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:42,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-27 04:14:42,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 04:14:42,415 INFO L87 Difference]: Start difference. First operand 160 states and 186 transitions. Second operand 50 states. [2020-10-27 04:14:44,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:44,646 INFO L93 Difference]: Finished difference Result 277 states and 335 transitions. [2020-10-27 04:14:44,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 04:14:44,647 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 344 [2020-10-27 04:14:44,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:44,648 INFO L225 Difference]: With dead ends: 277 [2020-10-27 04:14:44,648 INFO L226 Difference]: Without dead ends: 170 [2020-10-27 04:14:44,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1224, Invalid=4032, Unknown=0, NotChecked=0, Total=5256 [2020-10-27 04:14:44,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-27 04:14:44,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2020-10-27 04:14:44,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-27 04:14:44,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 193 transitions. [2020-10-27 04:14:44,659 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 193 transitions. Word has length 344 [2020-10-27 04:14:44,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:44,660 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 193 transitions. [2020-10-27 04:14:44,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-27 04:14:44,660 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 193 transitions. [2020-10-27 04:14:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-27 04:14:44,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:44,662 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 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 04:14:44,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 04:14:44,663 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:44,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:44,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1351736818, now seen corresponding path program 23 times [2020-10-27 04:14:44,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:44,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293097320] [2020-10-27 04:14:44,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:44,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:44,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:44,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:44,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:49,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-27 04:14:49,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:49,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 04:14:49,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:49,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:14:49,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:49,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:14:49,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:50,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:50,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:50,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:14:50,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:50,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:50,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:50,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:50,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:50,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:14:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:50,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 04:14:51,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:51,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-27 04:14:51,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:14:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 04:14:51,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:52,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 04:14:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:52,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:52,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:52,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 04:14:52,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:52,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-27 04:14:52,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:14:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 04:14:52,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:52,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 04:14:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:52,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:52,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:53,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:53,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 04:14:53,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:53,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-27 04:14:53,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:14:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 04:14:53,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10182 backedges. 3105 proven. 6786 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-27 04:14:53,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293097320] [2020-10-27 04:14:53,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:53,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-27 04:14:53,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604932167] [2020-10-27 04:14:53,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-27 04:14:53,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:53,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-27 04:14:53,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 04:14:53,532 INFO L87 Difference]: Start difference. First operand 166 states and 193 transitions. Second operand 52 states. [2020-10-27 04:14:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:56,021 INFO L93 Difference]: Finished difference Result 287 states and 347 transitions. [2020-10-27 04:14:56,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 04:14:56,022 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 358 [2020-10-27 04:14:56,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:56,024 INFO L225 Difference]: With dead ends: 287 [2020-10-27 04:14:56,024 INFO L226 Difference]: Without dead ends: 176 [2020-10-27 04:14:56,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1325, Invalid=4375, Unknown=0, NotChecked=0, Total=5700 [2020-10-27 04:14:56,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-27 04:14:56,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2020-10-27 04:14:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-27 04:14:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 200 transitions. [2020-10-27 04:14:56,035 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 200 transitions. Word has length 358 [2020-10-27 04:14:56,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:56,035 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 200 transitions. [2020-10-27 04:14:56,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-27 04:14:56,036 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 200 transitions. [2020-10-27 04:14:56,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-27 04:14:56,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:56,038 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 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 04:14:56,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 04:14:56,039 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:56,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:56,039 INFO L82 PathProgramCache]: Analyzing trace with hash 49225579, now seen corresponding path program 24 times [2020-10-27 04:14:56,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:56,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585949030] [2020-10-27 04:14:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:56,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:00,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:01,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-27 04:15:01,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:15:01,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-27 04:15:01,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:01,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:15:01,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:01,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:15:01,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:01,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:01,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:01,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:01,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:01,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:01,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:01,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:15:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:02,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 04:15:02,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:02,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-27 04:15:02,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:15:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 04:15:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:03,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-27 04:15:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:03,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:04,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:04,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 04:15:04,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:04,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-27 04:15:04,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:15:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 04:15:04,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:04,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-27 04:15:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:04,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:05,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:05,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 04:15:05,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:05,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 735 [2020-10-27 04:15:05,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:15:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 04:15:05,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11080 backedges. 3384 proven. 7393 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 04:15:05,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585949030] [2020-10-27 04:15:05,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:05,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-27 04:15:05,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010352686] [2020-10-27 04:15:05,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-27 04:15:05,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:05,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-27 04:15:05,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 04:15:05,236 INFO L87 Difference]: Start difference. First operand 172 states and 200 transitions. Second operand 54 states. [2020-10-27 04:15:07,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:07,699 INFO L93 Difference]: Finished difference Result 297 states and 359 transitions. [2020-10-27 04:15:07,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 04:15:07,699 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 372 [2020-10-27 04:15:07,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:07,701 INFO L225 Difference]: With dead ends: 297 [2020-10-27 04:15:07,701 INFO L226 Difference]: Without dead ends: 182 [2020-10-27 04:15:07,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1430, Invalid=4732, Unknown=0, NotChecked=0, Total=6162 [2020-10-27 04:15:07,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-27 04:15:07,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178. [2020-10-27 04:15:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-27 04:15:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 207 transitions. [2020-10-27 04:15:07,715 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 207 transitions. Word has length 372 [2020-10-27 04:15:07,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:07,715 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 207 transitions. [2020-10-27 04:15:07,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-27 04:15:07,715 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 207 transitions. [2020-10-27 04:15:07,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-27 04:15:07,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:07,718 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 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 04:15:07,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 04:15:07,719 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:07,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:07,719 INFO L82 PathProgramCache]: Analyzing trace with hash 223174088, now seen corresponding path program 25 times [2020-10-27 04:15:07,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:07,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837865539] [2020-10-27 04:15:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:07,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:12,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:12,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-27 04:15:12,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:15:12,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:15:12,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:15:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:15:12,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:13,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:13,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:13,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:13,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:13,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:13,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:13,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:13,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:13,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:15:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:13,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:14,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 04:15:14,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-27 04:15:14,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:15:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 04:15:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:15,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-27 04:15:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:15,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:16,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:16,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 04:15:16,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:16,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-27 04:15:16,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:15:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 04:15:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:16,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-27 04:15:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:16,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:16,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:16,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 04:15:16,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-27 04:15:16,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:15:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 04:15:16,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12016 backedges. 3675 proven. 8026 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-27 04:15:17,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837865539] [2020-10-27 04:15:17,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:17,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-27 04:15:17,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825532184] [2020-10-27 04:15:17,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-27 04:15:17,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:17,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-27 04:15:17,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2020-10-27 04:15:17,024 INFO L87 Difference]: Start difference. First operand 178 states and 207 transitions. Second operand 56 states. [2020-10-27 04:15:19,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:19,801 INFO L93 Difference]: Finished difference Result 307 states and 371 transitions. [2020-10-27 04:15:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-27 04:15:19,802 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 386 [2020-10-27 04:15:19,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:19,804 INFO L225 Difference]: With dead ends: 307 [2020-10-27 04:15:19,804 INFO L226 Difference]: Without dead ends: 188 [2020-10-27 04:15:19,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1539, Invalid=5103, Unknown=0, NotChecked=0, Total=6642 [2020-10-27 04:15:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-27 04:15:19,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2020-10-27 04:15:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-27 04:15:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 214 transitions. [2020-10-27 04:15:19,816 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 214 transitions. Word has length 386 [2020-10-27 04:15:19,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:19,816 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 214 transitions. [2020-10-27 04:15:19,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-27 04:15:19,816 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 214 transitions. [2020-10-27 04:15:19,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-27 04:15:19,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:19,819 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 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 04:15:19,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 04:15:19,820 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:19,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:19,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1194296027, now seen corresponding path program 26 times [2020-10-27 04:15:19,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:19,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693172657] [2020-10-27 04:15:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:19,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking...