/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 -i ../../../trunk/examples/svcomp/locks/test_locks_12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:12:13,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:12:13,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:12:13,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:12:13,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:12:13,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:12:13,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:12:13,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:12:13,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:12:13,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:12:13,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:12:13,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:12:13,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:12:13,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:12:13,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:12:13,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:12:13,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:12:13,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:12:13,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:12:13,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:12:13,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:12:13,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:12:13,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:12:13,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:12:13,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:12:13,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:12:13,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:12:13,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:12:13,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:12:13,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:12:13,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:12:13,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:12:13,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:12:13,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:12:13,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:12:13,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:12:13,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:12:13,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:12:13,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:12:13,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:12:13,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:12:13,454 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 [2020-10-14 05:12:13,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:12:13,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:12:13,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:12:13,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:12:13,498 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:12:13,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:12:13,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:12:13,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:12:13,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:12:13,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:12:13,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:12:13,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:12:13,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:12:13,501 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:12:13,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:12:13,501 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:12:13,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:12:13,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:12:13,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:12:13,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:12:13,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:12:13,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:12:13,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:12:13,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:12:13,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:12:13,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:12:13,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:12:13,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:12:13,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:12:13,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:12:13,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:12:13,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:12:13,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:12:13,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:12:13,794 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:12:13,795 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_12.c [2020-10-14 05:12:13,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7be776e29/7de998d4593f423dae05a02692e6cf0f/FLAGd16ab9abb [2020-10-14 05:12:14,298 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:12:14,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_12.c [2020-10-14 05:12:14,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7be776e29/7de998d4593f423dae05a02692e6cf0f/FLAGd16ab9abb [2020-10-14 05:12:14,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7be776e29/7de998d4593f423dae05a02692e6cf0f [2020-10-14 05:12:14,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:12:14,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:12:14,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:12:14,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:12:14,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:12:14,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:12:14" (1/1) ... [2020-10-14 05:12:14,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de5375c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:14, skipping insertion in model container [2020-10-14 05:12:14,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:12:14" (1/1) ... [2020-10-14 05:12:14,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:12:14,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:12:14,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:12:14,923 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:12:14,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:12:14,970 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:12:14,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:14 WrapperNode [2020-10-14 05:12:14,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:12:14,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:12:14,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:12:14,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:12:15,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:14" (1/1) ... [2020-10-14 05:12:15,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:14" (1/1) ... [2020-10-14 05:12:15,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:14" (1/1) ... [2020-10-14 05:12:15,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:14" (1/1) ... [2020-10-14 05:12:15,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:14" (1/1) ... [2020-10-14 05:12:15,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:14" (1/1) ... [2020-10-14 05:12:15,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:14" (1/1) ... [2020-10-14 05:12:15,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:12:15,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:12:15,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:12:15,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:12:15,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:12:15,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:12:15,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:12:15,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:12:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:12:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:12:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:12:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:12:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:12:15,474 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:12:15,474 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:12:15,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:12:15 BoogieIcfgContainer [2020-10-14 05:12:15,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:12:15,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:12:15,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:12:15,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:12:15,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:12:14" (1/3) ... [2020-10-14 05:12:15,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480fadae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:12:15, skipping insertion in model container [2020-10-14 05:12:15,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:14" (2/3) ... [2020-10-14 05:12:15,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480fadae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:12:15, skipping insertion in model container [2020-10-14 05:12:15,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:12:15" (3/3) ... [2020-10-14 05:12:15,489 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_12.c [2020-10-14 05:12:15,511 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:12:15,526 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:12:15,543 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:12:15,582 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:12:15,583 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:12:15,583 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:12:15,583 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:12:15,583 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:12:15,583 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:12:15,583 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:12:15,584 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:12:15,602 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-14 05:12:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:12:15,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:15,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:15,609 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:15,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:15,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1339057171, now seen corresponding path program 1 times [2020-10-14 05:12:15,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:15,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899073508] [2020-10-14 05:12:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:15,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:15,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:15,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:12:15,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:15,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 05:12:15,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:15,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:12:16,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:16,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:16,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:16,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:12:16,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:16,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:16,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899073508] [2020-10-14 05:12:16,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:16,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:16,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261188175] [2020-10-14 05:12:16,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:16,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:16,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:16,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:16,129 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-10-14 05:12:16,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:16,183 INFO L93 Difference]: Finished difference Result 99 states and 174 transitions. [2020-10-14 05:12:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:16,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 05:12:16,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:16,199 INFO L225 Difference]: With dead ends: 99 [2020-10-14 05:12:16,200 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 05:12:16,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:16,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 05:12:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 58. [2020-10-14 05:12:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 05:12:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 105 transitions. [2020-10-14 05:12:16,254 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 105 transitions. Word has length 22 [2020-10-14 05:12:16,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:16,255 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 105 transitions. [2020-10-14 05:12:16,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:16,255 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 105 transitions. [2020-10-14 05:12:16,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:12:16,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:16,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:16,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:12:16,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:16,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:16,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1676046447, now seen corresponding path program 1 times [2020-10-14 05:12:16,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:16,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642529200] [2020-10-14 05:12:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:16,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:16,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:12:16,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:16,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 05:12:16,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:16,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:16,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:16,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:16,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:16,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:12:16,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:16,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:16,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:16,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:16,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642529200] [2020-10-14 05:12:16,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:16,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:16,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635688035] [2020-10-14 05:12:16,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:16,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:16,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:16,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:16,419 INFO L87 Difference]: Start difference. First operand 58 states and 105 transitions. Second operand 3 states. [2020-10-14 05:12:16,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:16,473 INFO L93 Difference]: Finished difference Result 137 states and 252 transitions. [2020-10-14 05:12:16,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:16,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 05:12:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:16,480 INFO L225 Difference]: With dead ends: 137 [2020-10-14 05:12:16,481 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 05:12:16,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:16,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 05:12:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-14 05:12:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 05:12:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 149 transitions. [2020-10-14 05:12:16,508 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 149 transitions. Word has length 22 [2020-10-14 05:12:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:16,509 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 149 transitions. [2020-10-14 05:12:16,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:16,509 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 149 transitions. [2020-10-14 05:12:16,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 05:12:16,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:16,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:16,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:12:16,513 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:16,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:16,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1439113391, now seen corresponding path program 1 times [2020-10-14 05:12:16,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:16,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466678381] [2020-10-14 05:12:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:16,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:16,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:16,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:16,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:12:16,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:16,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 05:12:16,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:16,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:16,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:16,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:16,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:16,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:16,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:16,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:12:16,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:16,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:16,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:16,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:16,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:16,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:16,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466678381] [2020-10-14 05:12:16,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:16,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:16,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813364498] [2020-10-14 05:12:16,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:16,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:16,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:16,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:16,764 INFO L87 Difference]: Start difference. First operand 82 states and 149 transitions. Second operand 3 states. [2020-10-14 05:12:16,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:16,788 INFO L93 Difference]: Finished difference Result 157 states and 287 transitions. [2020-10-14 05:12:16,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:16,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 05:12:16,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:16,791 INFO L225 Difference]: With dead ends: 157 [2020-10-14 05:12:16,791 INFO L226 Difference]: Without dead ends: 155 [2020-10-14 05:12:16,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:16,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-14 05:12:16,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2020-10-14 05:12:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 05:12:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 199 transitions. [2020-10-14 05:12:16,807 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 199 transitions. Word has length 23 [2020-10-14 05:12:16,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:16,808 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 199 transitions. [2020-10-14 05:12:16,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:16,808 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 199 transitions. [2020-10-14 05:12:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 05:12:16,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:16,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:16,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:12:16,810 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:16,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:16,811 INFO L82 PathProgramCache]: Analyzing trace with hash 159249713, now seen corresponding path program 1 times [2020-10-14 05:12:16,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:16,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920384241] [2020-10-14 05:12:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:16,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:16,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:16,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:16,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:12:16,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 05:12:16,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:16,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:16,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:16,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:16,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:16,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:16,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:12:16,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:16,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:12:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:16,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920384241] [2020-10-14 05:12:16,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:16,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:16,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209424827] [2020-10-14 05:12:16,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:16,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:16,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:16,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:16,949 INFO L87 Difference]: Start difference. First operand 109 states and 199 transitions. Second operand 3 states. [2020-10-14 05:12:16,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:16,975 INFO L93 Difference]: Finished difference Result 261 states and 481 transitions. [2020-10-14 05:12:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:16,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 05:12:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:16,977 INFO L225 Difference]: With dead ends: 261 [2020-10-14 05:12:16,977 INFO L226 Difference]: Without dead ends: 157 [2020-10-14 05:12:16,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:16,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-14 05:12:16,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-10-14 05:12:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 05:12:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 282 transitions. [2020-10-14 05:12:16,992 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 282 transitions. Word has length 23 [2020-10-14 05:12:16,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:16,992 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 282 transitions. [2020-10-14 05:12:16,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:16,993 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 282 transitions. [2020-10-14 05:12:16,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:12:16,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:16,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:16,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:12:16,995 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:16,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:16,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1663055234, now seen corresponding path program 1 times [2020-10-14 05:12:16,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:16,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735618697] [2020-10-14 05:12:16,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:17,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:12:17,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:17,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 05:12:17,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:17,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:12:17,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:17,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:17,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:17,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:17,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:17,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:17,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:17,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:17,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:17,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:12:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:17,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735618697] [2020-10-14 05:12:17,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:17,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:17,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994603822] [2020-10-14 05:12:17,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:17,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:17,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:17,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:17,175 INFO L87 Difference]: Start difference. First operand 155 states and 282 transitions. Second operand 3 states. [2020-10-14 05:12:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:17,200 INFO L93 Difference]: Finished difference Result 295 states and 540 transitions. [2020-10-14 05:12:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:17,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 05:12:17,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:17,203 INFO L225 Difference]: With dead ends: 295 [2020-10-14 05:12:17,204 INFO L226 Difference]: Without dead ends: 293 [2020-10-14 05:12:17,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:17,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-14 05:12:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 211. [2020-10-14 05:12:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-14 05:12:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 382 transitions. [2020-10-14 05:12:17,234 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 382 transitions. Word has length 24 [2020-10-14 05:12:17,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:17,234 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 382 transitions. [2020-10-14 05:12:17,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:17,234 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 382 transitions. [2020-10-14 05:12:17,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:12:17,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:17,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:17,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:12:17,238 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:17,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:17,239 INFO L82 PathProgramCache]: Analyzing trace with hash 383191556, now seen corresponding path program 1 times [2020-10-14 05:12:17,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:17,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700918018] [2020-10-14 05:12:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:17,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:17,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:12:17,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:17,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 05:12:17,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:17,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:12:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:17,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:17,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:17,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:17,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:17,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:17,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:17,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:12:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:17,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700918018] [2020-10-14 05:12:17,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:17,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:17,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613198415] [2020-10-14 05:12:17,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:17,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:17,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:17,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:17,411 INFO L87 Difference]: Start difference. First operand 211 states and 382 transitions. Second operand 3 states. [2020-10-14 05:12:17,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:17,444 INFO L93 Difference]: Finished difference Result 507 states and 924 transitions. [2020-10-14 05:12:17,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:17,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 05:12:17,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:17,447 INFO L225 Difference]: With dead ends: 507 [2020-10-14 05:12:17,447 INFO L226 Difference]: Without dead ends: 301 [2020-10-14 05:12:17,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:17,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-14 05:12:17,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2020-10-14 05:12:17,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-10-14 05:12:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 538 transitions. [2020-10-14 05:12:17,478 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 538 transitions. Word has length 24 [2020-10-14 05:12:17,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:17,478 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 538 transitions. [2020-10-14 05:12:17,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:17,478 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 538 transitions. [2020-10-14 05:12:17,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:17,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:17,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:17,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:12:17,481 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:17,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:17,485 INFO L82 PathProgramCache]: Analyzing trace with hash 15318116, now seen corresponding path program 1 times [2020-10-14 05:12:17,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:17,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523778559] [2020-10-14 05:12:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:17,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:17,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:12:17,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:12:17,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 05:12:17,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:17,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:17,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:17,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:12:17,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:17,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:17,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:17,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:17,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:17,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:17,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:17,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:17,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:17,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523778559] [2020-10-14 05:12:17,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:17,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:17,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168345996] [2020-10-14 05:12:17,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:17,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:17,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:17,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:17,767 INFO L87 Difference]: Start difference. First operand 299 states and 538 transitions. Second operand 3 states. [2020-10-14 05:12:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:17,795 INFO L93 Difference]: Finished difference Result 563 states and 1020 transitions. [2020-10-14 05:12:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:17,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 05:12:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:17,802 INFO L225 Difference]: With dead ends: 563 [2020-10-14 05:12:17,803 INFO L226 Difference]: Without dead ends: 561 [2020-10-14 05:12:17,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:17,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-10-14 05:12:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 415. [2020-10-14 05:12:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-14 05:12:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 738 transitions. [2020-10-14 05:12:17,826 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 738 transitions. Word has length 25 [2020-10-14 05:12:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:17,827 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 738 transitions. [2020-10-14 05:12:17,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:17,827 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 738 transitions. [2020-10-14 05:12:17,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:17,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:17,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:17,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:12:17,832 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:17,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:17,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1264545562, now seen corresponding path program 1 times [2020-10-14 05:12:17,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:17,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535428237] [2020-10-14 05:12:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:17,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:18,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:12:18,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:12:18,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-14 05:12:18,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:18,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:18,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:18,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:18,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:18,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:18,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:18,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:18,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:18,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:18,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:18,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:18,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535428237] [2020-10-14 05:12:18,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:18,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:18,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575387293] [2020-10-14 05:12:18,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:18,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:18,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:18,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:18,097 INFO L87 Difference]: Start difference. First operand 415 states and 738 transitions. Second operand 3 states. [2020-10-14 05:12:18,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:18,131 INFO L93 Difference]: Finished difference Result 622 states and 1100 transitions. [2020-10-14 05:12:18,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:18,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 05:12:18,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:18,138 INFO L225 Difference]: With dead ends: 622 [2020-10-14 05:12:18,139 INFO L226 Difference]: Without dead ends: 420 [2020-10-14 05:12:18,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:18,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-10-14 05:12:18,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 418. [2020-10-14 05:12:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-14 05:12:18,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 730 transitions. [2020-10-14 05:12:18,162 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 730 transitions. Word has length 25 [2020-10-14 05:12:18,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:18,163 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 730 transitions. [2020-10-14 05:12:18,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:18,163 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 730 transitions. [2020-10-14 05:12:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:18,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:18,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:18,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:12:18,165 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:18,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:18,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1036277028, now seen corresponding path program 1 times [2020-10-14 05:12:18,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:18,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028820476] [2020-10-14 05:12:18,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:18,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:18,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:12:18,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 05:12:18,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:18,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:12:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:18,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:18,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:18,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:18,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:18,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:18,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:18,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:18,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028820476] [2020-10-14 05:12:18,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:18,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:18,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882674002] [2020-10-14 05:12:18,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:18,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:18,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:18,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:18,335 INFO L87 Difference]: Start difference. First operand 418 states and 730 transitions. Second operand 3 states. [2020-10-14 05:12:18,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:18,361 INFO L93 Difference]: Finished difference Result 628 states and 1094 transitions. [2020-10-14 05:12:18,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:18,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 05:12:18,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:18,364 INFO L225 Difference]: With dead ends: 628 [2020-10-14 05:12:18,365 INFO L226 Difference]: Without dead ends: 426 [2020-10-14 05:12:18,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-14 05:12:18,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 424. [2020-10-14 05:12:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-14 05:12:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 730 transitions. [2020-10-14 05:12:18,381 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 730 transitions. Word has length 25 [2020-10-14 05:12:18,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:18,381 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 730 transitions. [2020-10-14 05:12:18,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 730 transitions. [2020-10-14 05:12:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:18,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:18,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:18,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:12:18,383 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:18,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:18,383 INFO L82 PathProgramCache]: Analyzing trace with hash 15208674, now seen corresponding path program 1 times [2020-10-14 05:12:18,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:18,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586499760] [2020-10-14 05:12:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:18,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:18,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:12:18,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:12:18,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:18,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:12:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:18,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:18,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:18,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:18,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:18,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:18,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:18,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:18,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:18,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:18,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:18,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586499760] [2020-10-14 05:12:18,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:18,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:18,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890159290] [2020-10-14 05:12:18,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:18,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:18,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:18,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:18,484 INFO L87 Difference]: Start difference. First operand 424 states and 730 transitions. Second operand 3 states. [2020-10-14 05:12:18,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:18,520 INFO L93 Difference]: Finished difference Result 1004 states and 1740 transitions. [2020-10-14 05:12:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:18,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 05:12:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:18,527 INFO L225 Difference]: With dead ends: 1004 [2020-10-14 05:12:18,528 INFO L226 Difference]: Without dead ends: 594 [2020-10-14 05:12:18,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:18,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-10-14 05:12:18,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 592. [2020-10-14 05:12:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-10-14 05:12:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1014 transitions. [2020-10-14 05:12:18,547 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1014 transitions. Word has length 25 [2020-10-14 05:12:18,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:18,548 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 1014 transitions. [2020-10-14 05:12:18,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:18,548 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1014 transitions. [2020-10-14 05:12:18,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 05:12:18,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:18,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:18,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:12:18,550 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:18,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:18,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1492751003, now seen corresponding path program 1 times [2020-10-14 05:12:18,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:18,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524888073] [2020-10-14 05:12:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:18,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:18,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 05:12:18,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:18,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:12:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:18,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:18,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:18,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:18,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:18,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:12:18,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:18,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:18,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:18,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:18,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:18,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:18,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524888073] [2020-10-14 05:12:18,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:18,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:18,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553138461] [2020-10-14 05:12:18,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:18,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:18,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:18,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:18,704 INFO L87 Difference]: Start difference. First operand 592 states and 1014 transitions. Second operand 3 states. [2020-10-14 05:12:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:18,747 INFO L93 Difference]: Finished difference Result 1092 states and 1896 transitions. [2020-10-14 05:12:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:18,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 05:12:18,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:18,754 INFO L225 Difference]: With dead ends: 1092 [2020-10-14 05:12:18,754 INFO L226 Difference]: Without dead ends: 1090 [2020-10-14 05:12:18,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:18,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2020-10-14 05:12:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 832. [2020-10-14 05:12:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 832 states. [2020-10-14 05:12:18,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1398 transitions. [2020-10-14 05:12:18,782 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1398 transitions. Word has length 26 [2020-10-14 05:12:18,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:18,783 INFO L479 AbstractCegarLoop]: Abstraction has 832 states and 1398 transitions. [2020-10-14 05:12:18,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:18,783 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1398 transitions. [2020-10-14 05:12:18,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 05:12:18,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:18,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:18,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:12:18,786 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:18,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:18,786 INFO L82 PathProgramCache]: Analyzing trace with hash 212887325, now seen corresponding path program 1 times [2020-10-14 05:12:18,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:18,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979345245] [2020-10-14 05:12:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:18,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:18,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:18,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:18,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 05:12:18,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:18,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:12:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:18,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:18,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:18,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:18,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:18,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:18,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:18,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:18,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:18,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:18,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979345245] [2020-10-14 05:12:18,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:18,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:18,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990408365] [2020-10-14 05:12:18,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:18,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:18,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:18,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:18,935 INFO L87 Difference]: Start difference. First operand 832 states and 1398 transitions. Second operand 3 states. [2020-10-14 05:12:18,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:18,959 INFO L93 Difference]: Finished difference Result 1244 states and 2084 transitions. [2020-10-14 05:12:18,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:18,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 05:12:18,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:18,966 INFO L225 Difference]: With dead ends: 1244 [2020-10-14 05:12:18,967 INFO L226 Difference]: Without dead ends: 842 [2020-10-14 05:12:18,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:18,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-10-14 05:12:18,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2020-10-14 05:12:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2020-10-14 05:12:18,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1390 transitions. [2020-10-14 05:12:18,999 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1390 transitions. Word has length 26 [2020-10-14 05:12:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:18,999 INFO L479 AbstractCegarLoop]: Abstraction has 840 states and 1390 transitions. [2020-10-14 05:12:19,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1390 transitions. [2020-10-14 05:12:19,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 05:12:19,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:19,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:19,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:12:19,003 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:19,004 INFO L82 PathProgramCache]: Analyzing trace with hash -808181029, now seen corresponding path program 1 times [2020-10-14 05:12:19,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:19,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818105674] [2020-10-14 05:12:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:19,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:19,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:19,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:19,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 05:12:19,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:19,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:12:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:19,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:19,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:19,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:19,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:19,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:19,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:19,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:19,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818105674] [2020-10-14 05:12:19,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:19,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:19,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157109331] [2020-10-14 05:12:19,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:19,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:19,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:19,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:19,091 INFO L87 Difference]: Start difference. First operand 840 states and 1390 transitions. Second operand 3 states. [2020-10-14 05:12:19,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:19,131 INFO L93 Difference]: Finished difference Result 1980 states and 3296 transitions. [2020-10-14 05:12:19,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:19,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 05:12:19,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:19,141 INFO L225 Difference]: With dead ends: 1980 [2020-10-14 05:12:19,141 INFO L226 Difference]: Without dead ends: 1162 [2020-10-14 05:12:19,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:19,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-10-14 05:12:19,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1160. [2020-10-14 05:12:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2020-10-14 05:12:19,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1910 transitions. [2020-10-14 05:12:19,186 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1910 transitions. Word has length 26 [2020-10-14 05:12:19,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:19,186 INFO L479 AbstractCegarLoop]: Abstraction has 1160 states and 1910 transitions. [2020-10-14 05:12:19,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:19,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1910 transitions. [2020-10-14 05:12:19,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:19,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:19,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:19,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:12:19,190 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:19,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:19,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1737474327, now seen corresponding path program 1 times [2020-10-14 05:12:19,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:19,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877304633] [2020-10-14 05:12:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:19,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:19,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:19,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 05:12:19,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:19,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:19,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 05:12:19,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:19,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:19,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:19,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:19,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:19,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:19,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:19,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:19,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:19,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:19,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877304633] [2020-10-14 05:12:19,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:19,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:19,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875164661] [2020-10-14 05:12:19,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:19,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:19,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:19,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:19,334 INFO L87 Difference]: Start difference. First operand 1160 states and 1910 transitions. Second operand 3 states. [2020-10-14 05:12:19,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:19,369 INFO L93 Difference]: Finished difference Result 2108 states and 3528 transitions. [2020-10-14 05:12:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:19,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:19,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:19,383 INFO L225 Difference]: With dead ends: 2108 [2020-10-14 05:12:19,383 INFO L226 Difference]: Without dead ends: 2106 [2020-10-14 05:12:19,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:19,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-10-14 05:12:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1656. [2020-10-14 05:12:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1656 states. [2020-10-14 05:12:19,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2662 transitions. [2020-10-14 05:12:19,437 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2662 transitions. Word has length 27 [2020-10-14 05:12:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:19,438 INFO L479 AbstractCegarLoop]: Abstraction has 1656 states and 2662 transitions. [2020-10-14 05:12:19,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:19,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2662 transitions. [2020-10-14 05:12:19,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:19,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:19,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:19,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:12:19,442 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:19,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:19,442 INFO L82 PathProgramCache]: Analyzing trace with hash 457610649, now seen corresponding path program 1 times [2020-10-14 05:12:19,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:19,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445927977] [2020-10-14 05:12:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:19,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:19,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:19,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 05:12:19,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:19,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:12:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:19,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:19,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:19,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:19,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:19,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:19,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:19,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:19,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445927977] [2020-10-14 05:12:19,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:19,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:19,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89349387] [2020-10-14 05:12:19,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:19,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:19,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:19,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:19,580 INFO L87 Difference]: Start difference. First operand 1656 states and 2662 transitions. Second operand 3 states. [2020-10-14 05:12:19,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:19,611 INFO L93 Difference]: Finished difference Result 2476 states and 3968 transitions. [2020-10-14 05:12:19,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:19,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:19,620 INFO L225 Difference]: With dead ends: 2476 [2020-10-14 05:12:19,621 INFO L226 Difference]: Without dead ends: 1674 [2020-10-14 05:12:19,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:19,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2020-10-14 05:12:19,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1672. [2020-10-14 05:12:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1672 states. [2020-10-14 05:12:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2646 transitions. [2020-10-14 05:12:19,670 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2646 transitions. Word has length 27 [2020-10-14 05:12:19,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:19,671 INFO L479 AbstractCegarLoop]: Abstraction has 1672 states and 2646 transitions. [2020-10-14 05:12:19,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2646 transitions. [2020-10-14 05:12:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:19,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:19,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:19,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:12:19,674 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:19,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:19,675 INFO L82 PathProgramCache]: Analyzing trace with hash -563457705, now seen corresponding path program 1 times [2020-10-14 05:12:19,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:19,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838127293] [2020-10-14 05:12:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:19,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:19,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:19,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:19,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:12:19,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:19,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:19,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:19,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:19,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:19,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:19,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:19,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:19,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:19,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:19,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:19,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:19,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838127293] [2020-10-14 05:12:19,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:19,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:19,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271352864] [2020-10-14 05:12:19,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:19,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:19,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:19,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:19,746 INFO L87 Difference]: Start difference. First operand 1672 states and 2646 transitions. Second operand 3 states. [2020-10-14 05:12:19,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:19,778 INFO L93 Difference]: Finished difference Result 2476 states and 3896 transitions. [2020-10-14 05:12:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:19,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:19,786 INFO L225 Difference]: With dead ends: 2476 [2020-10-14 05:12:19,786 INFO L226 Difference]: Without dead ends: 1674 [2020-10-14 05:12:19,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:19,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2020-10-14 05:12:19,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1672. [2020-10-14 05:12:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1672 states. [2020-10-14 05:12:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2598 transitions. [2020-10-14 05:12:19,829 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2598 transitions. Word has length 27 [2020-10-14 05:12:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:19,829 INFO L479 AbstractCegarLoop]: Abstraction has 1672 states and 2598 transitions. [2020-10-14 05:12:19,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:19,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2598 transitions. [2020-10-14 05:12:19,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:12:19,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:19,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:19,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:12:19,833 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:19,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:19,833 INFO L82 PathProgramCache]: Analyzing trace with hash 2042565849, now seen corresponding path program 1 times [2020-10-14 05:12:19,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:19,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806103284] [2020-10-14 05:12:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:19,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:19,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:12:19,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:19,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:12:19,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:19,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 05:12:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:19,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:19,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:19,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:19,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:19,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:19,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:19,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:19,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:19,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:19,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:19,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806103284] [2020-10-14 05:12:19,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:19,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:19,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398980068] [2020-10-14 05:12:19,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:19,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:19,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:19,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:19,879 INFO L87 Difference]: Start difference. First operand 1672 states and 2598 transitions. Second operand 3 states. [2020-10-14 05:12:19,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:19,924 INFO L93 Difference]: Finished difference Result 3916 states and 6120 transitions. [2020-10-14 05:12:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:19,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 05:12:19,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:19,934 INFO L225 Difference]: With dead ends: 3916 [2020-10-14 05:12:19,934 INFO L226 Difference]: Without dead ends: 2282 [2020-10-14 05:12:19,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:19,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2020-10-14 05:12:19,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2280. [2020-10-14 05:12:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2020-10-14 05:12:19,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3526 transitions. [2020-10-14 05:12:19,992 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3526 transitions. Word has length 27 [2020-10-14 05:12:19,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:19,992 INFO L479 AbstractCegarLoop]: Abstraction has 2280 states and 3526 transitions. [2020-10-14 05:12:19,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:19,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3526 transitions. [2020-10-14 05:12:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:12:19,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:19,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:19,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:12:19,996 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:19,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:19,996 INFO L82 PathProgramCache]: Analyzing trace with hash -83685330, now seen corresponding path program 1 times [2020-10-14 05:12:19,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:19,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539684235] [2020-10-14 05:12:19,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:20,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:20,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:12:20,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:20,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:12:20,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:20,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:20,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:20,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:12:20,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:20,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:20,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:20,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:20,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:20,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:20,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:20,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:20,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:20,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:20,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539684235] [2020-10-14 05:12:20,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:20,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:20,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831472015] [2020-10-14 05:12:20,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:20,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:20,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:20,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:20,057 INFO L87 Difference]: Start difference. First operand 2280 states and 3526 transitions. Second operand 3 states. [2020-10-14 05:12:20,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:20,122 INFO L93 Difference]: Finished difference Result 4076 states and 6440 transitions. [2020-10-14 05:12:20,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:20,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 05:12:20,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:20,139 INFO L225 Difference]: With dead ends: 4076 [2020-10-14 05:12:20,139 INFO L226 Difference]: Without dead ends: 4074 [2020-10-14 05:12:20,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:20,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2020-10-14 05:12:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 3304. [2020-10-14 05:12:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3304 states. [2020-10-14 05:12:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 4966 transitions. [2020-10-14 05:12:20,223 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 4966 transitions. Word has length 28 [2020-10-14 05:12:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:20,224 INFO L479 AbstractCegarLoop]: Abstraction has 3304 states and 4966 transitions. [2020-10-14 05:12:20,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 4966 transitions. [2020-10-14 05:12:20,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:12:20,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:20,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:20,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:12:20,231 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:20,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1363549008, now seen corresponding path program 1 times [2020-10-14 05:12:20,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:20,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91966423] [2020-10-14 05:12:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:20,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:20,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:12:20,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:20,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:12:20,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:20,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:12:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:20,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:20,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:20,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:20,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:20,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:20,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:20,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:20,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:20,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:20,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:20,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91966423] [2020-10-14 05:12:20,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:20,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:20,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145273515] [2020-10-14 05:12:20,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:20,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:20,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:20,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:20,298 INFO L87 Difference]: Start difference. First operand 3304 states and 4966 transitions. Second operand 3 states. [2020-10-14 05:12:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:20,363 INFO L93 Difference]: Finished difference Result 7724 states and 11688 transitions. [2020-10-14 05:12:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:20,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 05:12:20,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:20,382 INFO L225 Difference]: With dead ends: 7724 [2020-10-14 05:12:20,382 INFO L226 Difference]: Without dead ends: 4458 [2020-10-14 05:12:20,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:20,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2020-10-14 05:12:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 4456. [2020-10-14 05:12:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4456 states. [2020-10-14 05:12:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 6662 transitions. [2020-10-14 05:12:20,497 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 6662 transitions. Word has length 28 [2020-10-14 05:12:20,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:20,497 INFO L479 AbstractCegarLoop]: Abstraction has 4456 states and 6662 transitions. [2020-10-14 05:12:20,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 6662 transitions. [2020-10-14 05:12:20,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:12:20,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:20,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:20,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:12:20,504 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:20,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:20,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1700936844, now seen corresponding path program 1 times [2020-10-14 05:12:20,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:20,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32974272] [2020-10-14 05:12:20,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:20,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:20,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:12:20,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:20,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 05:12:20,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:20,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:12:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:20,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:20,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:20,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:20,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:20,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:20,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:20,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:20,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:20,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:20,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:20,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32974272] [2020-10-14 05:12:20,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:20,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:20,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567472477] [2020-10-14 05:12:20,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:20,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:20,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:20,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:20,600 INFO L87 Difference]: Start difference. First operand 4456 states and 6662 transitions. Second operand 3 states. [2020-10-14 05:12:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:20,662 INFO L93 Difference]: Finished difference Result 6732 states and 10056 transitions. [2020-10-14 05:12:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:20,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 05:12:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:20,713 INFO L225 Difference]: With dead ends: 6732 [2020-10-14 05:12:20,713 INFO L226 Difference]: Without dead ends: 4554 [2020-10-14 05:12:20,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2020-10-14 05:12:20,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 4552. [2020-10-14 05:12:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4552 states. [2020-10-14 05:12:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 6726 transitions. [2020-10-14 05:12:20,824 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 6726 transitions. Word has length 29 [2020-10-14 05:12:20,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:20,824 INFO L479 AbstractCegarLoop]: Abstraction has 4552 states and 6726 transitions. [2020-10-14 05:12:20,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:20,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 6726 transitions. [2020-10-14 05:12:20,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:12:20,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:20,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:20,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:12:20,831 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:20,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:20,831 INFO L82 PathProgramCache]: Analyzing trace with hash 679868490, now seen corresponding path program 1 times [2020-10-14 05:12:20,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:20,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304867351] [2020-10-14 05:12:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:20,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:20,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:12:20,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:12:20,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:20,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:12:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:20,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:20,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:20,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:20,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:20,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:20,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:20,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304867351] [2020-10-14 05:12:20,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:20,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:20,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520305431] [2020-10-14 05:12:20,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:20,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:20,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:20,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:20,909 INFO L87 Difference]: Start difference. First operand 4552 states and 6726 transitions. Second operand 3 states. [2020-10-14 05:12:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:21,045 INFO L93 Difference]: Finished difference Result 13260 states and 19400 transitions. [2020-10-14 05:12:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:21,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 05:12:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:21,075 INFO L225 Difference]: With dead ends: 13260 [2020-10-14 05:12:21,075 INFO L226 Difference]: Without dead ends: 8842 [2020-10-14 05:12:21,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2020-10-14 05:12:21,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 8840. [2020-10-14 05:12:21,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8840 states. [2020-10-14 05:12:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8840 states to 8840 states and 12678 transitions. [2020-10-14 05:12:21,367 INFO L78 Accepts]: Start accepts. Automaton has 8840 states and 12678 transitions. Word has length 29 [2020-10-14 05:12:21,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:21,368 INFO L479 AbstractCegarLoop]: Abstraction has 8840 states and 12678 transitions. [2020-10-14 05:12:21,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:21,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8840 states and 12678 transitions. [2020-10-14 05:12:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:12:21,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:21,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:21,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:12:21,380 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:21,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:21,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1959732168, now seen corresponding path program 1 times [2020-10-14 05:12:21,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:21,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154809011] [2020-10-14 05:12:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:21,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:21,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:21,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:12:21,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:21,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 05:12:21,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:21,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:12:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:21,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:21,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:21,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:21,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:21,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:21,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:21,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:21,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:21,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:21,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154809011] [2020-10-14 05:12:21,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:21,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:21,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089185100] [2020-10-14 05:12:21,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:21,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:21,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:21,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:21,469 INFO L87 Difference]: Start difference. First operand 8840 states and 12678 transitions. Second operand 3 states. [2020-10-14 05:12:21,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:21,602 INFO L93 Difference]: Finished difference Result 10124 states and 14984 transitions. [2020-10-14 05:12:21,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:21,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 05:12:21,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:21,639 INFO L225 Difference]: With dead ends: 10124 [2020-10-14 05:12:21,639 INFO L226 Difference]: Without dead ends: 10122 [2020-10-14 05:12:21,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:21,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10122 states. [2020-10-14 05:12:21,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10122 to 8840. [2020-10-14 05:12:21,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8840 states. [2020-10-14 05:12:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8840 states to 8840 states and 12550 transitions. [2020-10-14 05:12:21,908 INFO L78 Accepts]: Start accepts. Automaton has 8840 states and 12550 transitions. Word has length 29 [2020-10-14 05:12:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:21,908 INFO L479 AbstractCegarLoop]: Abstraction has 8840 states and 12550 transitions. [2020-10-14 05:12:21,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand 8840 states and 12550 transitions. [2020-10-14 05:12:21,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 05:12:21,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:21,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:21,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 05:12:21,920 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:21,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:21,921 INFO L82 PathProgramCache]: Analyzing trace with hash -398698171, now seen corresponding path program 1 times [2020-10-14 05:12:21,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:21,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001946728] [2020-10-14 05:12:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:21,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:21,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:21,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:21,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:12:21,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:21,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:12:21,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:21,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:12:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:21,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:21,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:21,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:21,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:21,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:21,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:21,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:21,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:21,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:21,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:21,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001946728] [2020-10-14 05:12:21,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:21,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:21,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835489530] [2020-10-14 05:12:21,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:21,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:21,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:21,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:21,998 INFO L87 Difference]: Start difference. First operand 8840 states and 12550 transitions. Second operand 3 states. [2020-10-14 05:12:22,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:22,234 INFO L93 Difference]: Finished difference Result 15244 states and 22024 transitions. [2020-10-14 05:12:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:22,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 05:12:22,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:22,264 INFO L225 Difference]: With dead ends: 15244 [2020-10-14 05:12:22,265 INFO L226 Difference]: Without dead ends: 15242 [2020-10-14 05:12:22,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15242 states. [2020-10-14 05:12:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15242 to 13192. [2020-10-14 05:12:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13192 states. [2020-10-14 05:12:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13192 states to 13192 states and 18182 transitions. [2020-10-14 05:12:22,537 INFO L78 Accepts]: Start accepts. Automaton has 13192 states and 18182 transitions. Word has length 30 [2020-10-14 05:12:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:22,537 INFO L479 AbstractCegarLoop]: Abstraction has 13192 states and 18182 transitions. [2020-10-14 05:12:22,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 13192 states and 18182 transitions. [2020-10-14 05:12:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 05:12:22,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:22,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:22,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 05:12:22,557 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:22,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:22,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1678561849, now seen corresponding path program 1 times [2020-10-14 05:12:22,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:22,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366999489] [2020-10-14 05:12:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:22,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:22,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:22,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:12:22,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 05:12:22,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:22,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 05:12:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:22,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:22,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:22,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:22,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:22,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:22,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:22,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:22,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:22,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366999489] [2020-10-14 05:12:22,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:22,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:22,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116485747] [2020-10-14 05:12:22,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:22,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:22,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:22,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:22,617 INFO L87 Difference]: Start difference. First operand 13192 states and 18182 transitions. Second operand 3 states. [2020-10-14 05:12:22,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:22,847 INFO L93 Difference]: Finished difference Result 19596 states and 26824 transitions. [2020-10-14 05:12:22,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:22,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 05:12:22,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:22,874 INFO L225 Difference]: With dead ends: 19596 [2020-10-14 05:12:22,874 INFO L226 Difference]: Without dead ends: 13194 [2020-10-14 05:12:22,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:22,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13194 states. [2020-10-14 05:12:23,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13194 to 13192. [2020-10-14 05:12:23,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13192 states. [2020-10-14 05:12:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13192 states to 13192 states and 17798 transitions. [2020-10-14 05:12:23,137 INFO L78 Accepts]: Start accepts. Automaton has 13192 states and 17798 transitions. Word has length 30 [2020-10-14 05:12:23,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:23,137 INFO L479 AbstractCegarLoop]: Abstraction has 13192 states and 17798 transitions. [2020-10-14 05:12:23,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 13192 states and 17798 transitions. [2020-10-14 05:12:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 05:12:23,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:23,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:23,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 05:12:23,159 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:23,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:23,159 INFO L82 PathProgramCache]: Analyzing trace with hash 622260741, now seen corresponding path program 1 times [2020-10-14 05:12:23,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:23,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918963856] [2020-10-14 05:12:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:23,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:23,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:12:23,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:12:23,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:23,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:12:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:23,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:23,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:23,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:23,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:23,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:23,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:23,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:23,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:23,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:23,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918963856] [2020-10-14 05:12:23,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:23,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:23,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723814943] [2020-10-14 05:12:23,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:23,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:23,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:23,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:23,205 INFO L87 Difference]: Start difference. First operand 13192 states and 17798 transitions. Second operand 3 states. [2020-10-14 05:12:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:23,392 INFO L93 Difference]: Finished difference Result 30348 states and 41096 transitions. [2020-10-14 05:12:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:23,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 05:12:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:23,429 INFO L225 Difference]: With dead ends: 30348 [2020-10-14 05:12:23,430 INFO L226 Difference]: Without dead ends: 17290 [2020-10-14 05:12:23,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:23,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17290 states. [2020-10-14 05:12:24,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17290 to 17288. [2020-10-14 05:12:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17288 states. [2020-10-14 05:12:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17288 states to 17288 states and 23046 transitions. [2020-10-14 05:12:24,275 INFO L78 Accepts]: Start accepts. Automaton has 17288 states and 23046 transitions. Word has length 30 [2020-10-14 05:12:24,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:24,275 INFO L479 AbstractCegarLoop]: Abstraction has 17288 states and 23046 transitions. [2020-10-14 05:12:24,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:24,275 INFO L276 IsEmpty]: Start isEmpty. Operand 17288 states and 23046 transitions. [2020-10-14 05:12:24,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:12:24,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:24,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:24,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 05:12:24,298 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:24,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:24,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1163469695, now seen corresponding path program 1 times [2020-10-14 05:12:24,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:24,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990752] [2020-10-14 05:12:24,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:24,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:24,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:24,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:24,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:12:24,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:24,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 05:12:24,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:24,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:24,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:24,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 05:12:24,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:24,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:24,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:24,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:24,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:24,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:24,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:24,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:24,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:24,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990752] [2020-10-14 05:12:24,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:24,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:24,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855833436] [2020-10-14 05:12:24,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:24,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:24,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:24,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:24,365 INFO L87 Difference]: Start difference. First operand 17288 states and 23046 transitions. Second operand 3 states. [2020-10-14 05:12:24,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:24,718 INFO L93 Difference]: Finished difference Result 29324 states and 39688 transitions. [2020-10-14 05:12:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:24,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-14 05:12:24,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:24,781 INFO L225 Difference]: With dead ends: 29324 [2020-10-14 05:12:24,782 INFO L226 Difference]: Without dead ends: 29322 [2020-10-14 05:12:24,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:24,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29322 states. [2020-10-14 05:12:25,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29322 to 26248. [2020-10-14 05:12:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26248 states. [2020-10-14 05:12:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26248 states to 26248 states and 34054 transitions. [2020-10-14 05:12:25,315 INFO L78 Accepts]: Start accepts. Automaton has 26248 states and 34054 transitions. Word has length 31 [2020-10-14 05:12:25,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:25,315 INFO L479 AbstractCegarLoop]: Abstraction has 26248 states and 34054 transitions. [2020-10-14 05:12:25,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 26248 states and 34054 transitions. [2020-10-14 05:12:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:12:25,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:25,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:25,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 05:12:25,355 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:25,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1851633923, now seen corresponding path program 1 times [2020-10-14 05:12:25,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:25,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126081947] [2020-10-14 05:12:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:25,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:25,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:25,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:25,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:12:25,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:25,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:12:25,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:25,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 05:12:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:25,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:25,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:25,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:25,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:25,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:25,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:25,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:25,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:25,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:25,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:25,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126081947] [2020-10-14 05:12:25,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:25,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:25,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040787491] [2020-10-14 05:12:25,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:25,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:25,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:25,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:25,424 INFO L87 Difference]: Start difference. First operand 26248 states and 34054 transitions. Second operand 3 states. [2020-10-14 05:12:25,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:25,971 INFO L93 Difference]: Finished difference Result 60044 states and 78088 transitions. [2020-10-14 05:12:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:25,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-14 05:12:25,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:26,035 INFO L225 Difference]: With dead ends: 60044 [2020-10-14 05:12:26,035 INFO L226 Difference]: Without dead ends: 33930 [2020-10-14 05:12:26,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:26,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33930 states. [2020-10-14 05:12:26,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33930 to 33928. [2020-10-14 05:12:26,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33928 states. [2020-10-14 05:12:26,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33928 states to 33928 states and 43270 transitions. [2020-10-14 05:12:26,931 INFO L78 Accepts]: Start accepts. Automaton has 33928 states and 43270 transitions. Word has length 31 [2020-10-14 05:12:26,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:26,932 INFO L479 AbstractCegarLoop]: Abstraction has 33928 states and 43270 transitions. [2020-10-14 05:12:26,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 33928 states and 43270 transitions. [2020-10-14 05:12:26,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 05:12:26,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:26,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:26,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 05:12:26,952 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:26,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:26,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1707606376, now seen corresponding path program 1 times [2020-10-14 05:12:26,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:26,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231957802] [2020-10-14 05:12:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:26,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:26,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:27,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:27,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 05:12:27,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:27,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 05:12:27,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:27,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:12:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:27,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:27,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:27,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:27,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:27,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:27,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:27,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:27,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:27,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:27,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231957802] [2020-10-14 05:12:27,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:27,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:27,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971306418] [2020-10-14 05:12:27,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:27,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:27,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:27,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:27,047 INFO L87 Difference]: Start difference. First operand 33928 states and 43270 transitions. Second operand 3 states. [2020-10-14 05:12:27,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:27,735 INFO L93 Difference]: Finished difference Result 56460 states and 72456 transitions. [2020-10-14 05:12:27,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:27,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 05:12:27,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:27,806 INFO L225 Difference]: With dead ends: 56460 [2020-10-14 05:12:27,806 INFO L226 Difference]: Without dead ends: 56458 [2020-10-14 05:12:27,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:27,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56458 states. [2020-10-14 05:12:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56458 to 52360. [2020-10-14 05:12:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52360 states. [2020-10-14 05:12:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52360 states to 52360 states and 65286 transitions. [2020-10-14 05:12:29,478 INFO L78 Accepts]: Start accepts. Automaton has 52360 states and 65286 transitions. Word has length 32 [2020-10-14 05:12:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:29,479 INFO L479 AbstractCegarLoop]: Abstraction has 52360 states and 65286 transitions. [2020-10-14 05:12:29,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:29,479 INFO L276 IsEmpty]: Start isEmpty. Operand 52360 states and 65286 transitions. [2020-10-14 05:12:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 05:12:29,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:29,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:29,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 05:12:29,516 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:29,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1307497242, now seen corresponding path program 1 times [2020-10-14 05:12:29,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:29,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81079362] [2020-10-14 05:12:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:29,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:29,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:29,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:29,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:29,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 05:12:29,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 05:12:29,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:29,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:29,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:12:29,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:29,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:29,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:29,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:29,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:29,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:29,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:29,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:29,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:29,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81079362] [2020-10-14 05:12:29,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:29,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:29,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324268187] [2020-10-14 05:12:29,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:29,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:29,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:29,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:29,629 INFO L87 Difference]: Start difference. First operand 52360 states and 65286 transitions. Second operand 3 states. [2020-10-14 05:12:30,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:30,260 INFO L93 Difference]: Finished difference Result 78348 states and 97288 transitions. [2020-10-14 05:12:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:30,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 05:12:30,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:30,320 INFO L225 Difference]: With dead ends: 78348 [2020-10-14 05:12:30,320 INFO L226 Difference]: Without dead ends: 52746 [2020-10-14 05:12:30,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:30,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52746 states. [2020-10-14 05:12:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52746 to 52744. [2020-10-14 05:12:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52744 states. [2020-10-14 05:12:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52744 states to 52744 states and 64518 transitions. [2020-10-14 05:12:30,904 INFO L78 Accepts]: Start accepts. Automaton has 52744 states and 64518 transitions. Word has length 32 [2020-10-14 05:12:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:30,904 INFO L479 AbstractCegarLoop]: Abstraction has 52744 states and 64518 transitions. [2020-10-14 05:12:30,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:30,904 INFO L276 IsEmpty]: Start isEmpty. Operand 52744 states and 64518 transitions. [2020-10-14 05:12:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 05:12:31,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:31,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:31,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 05:12:31,219 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:31,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:31,220 INFO L82 PathProgramCache]: Analyzing trace with hash -280850660, now seen corresponding path program 1 times [2020-10-14 05:12:31,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:31,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540708949] [2020-10-14 05:12:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:31,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:31,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:31,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 05:12:31,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:31,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:12:31,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:31,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:31,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:31,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 05:12:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:31,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:31,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:31,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:31,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:31,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:31,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:31,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:31,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:31,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:31,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540708949] [2020-10-14 05:12:31,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:31,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:31,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564779231] [2020-10-14 05:12:31,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:31,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:31,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:31,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:31,271 INFO L87 Difference]: Start difference. First operand 52744 states and 64518 transitions. Second operand 3 states. [2020-10-14 05:12:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:31,588 INFO L93 Difference]: Finished difference Result 78860 states and 96008 transitions. [2020-10-14 05:12:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:31,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 05:12:31,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:31,652 INFO L225 Difference]: With dead ends: 78860 [2020-10-14 05:12:31,652 INFO L226 Difference]: Without dead ends: 53258 [2020-10-14 05:12:31,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:31,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53258 states. [2020-10-14 05:12:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53258 to 53256. [2020-10-14 05:12:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53256 states. [2020-10-14 05:12:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53256 states to 53256 states and 64006 transitions. [2020-10-14 05:12:33,647 INFO L78 Accepts]: Start accepts. Automaton has 53256 states and 64006 transitions. Word has length 32 [2020-10-14 05:12:33,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:33,647 INFO L479 AbstractCegarLoop]: Abstraction has 53256 states and 64006 transitions. [2020-10-14 05:12:33,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:33,647 INFO L276 IsEmpty]: Start isEmpty. Operand 53256 states and 64006 transitions. [2020-10-14 05:12:33,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 05:12:33,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:33,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:33,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 05:12:33,687 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:33,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:33,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1301919014, now seen corresponding path program 1 times [2020-10-14 05:12:33,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:33,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968209317] [2020-10-14 05:12:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:33,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:33,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:33,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 05:12:33,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:33,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:12:33,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:33,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:12:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:33,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:33,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:33,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:33,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:33,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:33,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:33,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:33,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:33,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:33,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968209317] [2020-10-14 05:12:33,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:33,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:33,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981505942] [2020-10-14 05:12:33,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:33,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:33,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:33,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:33,731 INFO L87 Difference]: Start difference. First operand 53256 states and 64006 transitions. Second operand 3 states. [2020-10-14 05:12:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:34,312 INFO L93 Difference]: Finished difference Result 119820 states and 142856 transitions. [2020-10-14 05:12:34,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:34,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 05:12:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:34,372 INFO L225 Difference]: With dead ends: 119820 [2020-10-14 05:12:34,372 INFO L226 Difference]: Without dead ends: 67594 [2020-10-14 05:12:34,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67594 states. [2020-10-14 05:12:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67594 to 67592. [2020-10-14 05:12:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67592 states. [2020-10-14 05:12:35,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67592 states to 67592 states and 78854 transitions. [2020-10-14 05:12:35,472 INFO L78 Accepts]: Start accepts. Automaton has 67592 states and 78854 transitions. Word has length 32 [2020-10-14 05:12:35,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:35,472 INFO L479 AbstractCegarLoop]: Abstraction has 67592 states and 78854 transitions. [2020-10-14 05:12:35,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:35,472 INFO L276 IsEmpty]: Start isEmpty. Operand 67592 states and 78854 transitions. [2020-10-14 05:12:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 05:12:35,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:35,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:35,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 05:12:35,501 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:35,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:35,501 INFO L82 PathProgramCache]: Analyzing trace with hash -683499274, now seen corresponding path program 1 times [2020-10-14 05:12:35,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:35,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558454608] [2020-10-14 05:12:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:35,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:35,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:35,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:35,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 05:12:35,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:35,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 05:12:35,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:35,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 05:12:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:35,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:35,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:35,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:35,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:35,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:35,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:35,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:35,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:35,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:35,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:35,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558454608] [2020-10-14 05:12:35,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:35,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:35,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128098214] [2020-10-14 05:12:35,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:35,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:35,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:35,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:35,560 INFO L87 Difference]: Start difference. First operand 67592 states and 78854 transitions. Second operand 3 states. [2020-10-14 05:12:36,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:36,540 INFO L93 Difference]: Finished difference Result 109578 states and 126983 transitions. [2020-10-14 05:12:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:36,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 05:12:36,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:36,635 INFO L225 Difference]: With dead ends: 109578 [2020-10-14 05:12:36,635 INFO L226 Difference]: Without dead ends: 109576 [2020-10-14 05:12:36,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:36,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109576 states. [2020-10-14 05:12:39,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109576 to 105480. [2020-10-14 05:12:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105480 states. [2020-10-14 05:12:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105480 states to 105480 states and 120838 transitions. [2020-10-14 05:12:39,600 INFO L78 Accepts]: Start accepts. Automaton has 105480 states and 120838 transitions. Word has length 33 [2020-10-14 05:12:39,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:39,601 INFO L479 AbstractCegarLoop]: Abstraction has 105480 states and 120838 transitions. [2020-10-14 05:12:39,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 105480 states and 120838 transitions. [2020-10-14 05:12:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 05:12:39,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:39,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:39,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 05:12:39,658 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:39,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:39,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1963362952, now seen corresponding path program 1 times [2020-10-14 05:12:39,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:39,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415873561] [2020-10-14 05:12:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:39,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:39,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:39,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:39,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 05:12:39,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:12:39,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:39,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:12:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:39,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:39,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:39,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:39,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:39,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:39,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:39,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:39,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:39,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:39,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415873561] [2020-10-14 05:12:39,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:39,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:39,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419193773] [2020-10-14 05:12:39,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:39,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:39,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:39,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:39,709 INFO L87 Difference]: Start difference. First operand 105480 states and 120838 transitions. Second operand 3 states. [2020-10-14 05:12:40,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:40,325 INFO L93 Difference]: Finished difference Result 157708 states and 179720 transitions. [2020-10-14 05:12:40,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:40,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 05:12:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:40,420 INFO L225 Difference]: With dead ends: 157708 [2020-10-14 05:12:40,420 INFO L226 Difference]: Without dead ends: 106506 [2020-10-14 05:12:40,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:40,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106506 states. [2020-10-14 05:12:41,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106506 to 106504. [2020-10-14 05:12:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106504 states. [2020-10-14 05:12:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106504 states to 106504 states and 119814 transitions. [2020-10-14 05:12:41,932 INFO L78 Accepts]: Start accepts. Automaton has 106504 states and 119814 transitions. Word has length 33 [2020-10-14 05:12:41,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:41,932 INFO L479 AbstractCegarLoop]: Abstraction has 106504 states and 119814 transitions. [2020-10-14 05:12:41,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:41,932 INFO L276 IsEmpty]: Start isEmpty. Operand 106504 states and 119814 transitions. [2020-10-14 05:12:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 05:12:41,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:41,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:41,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 05:12:41,996 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:41,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:41,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1310535990, now seen corresponding path program 1 times [2020-10-14 05:12:41,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:41,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222695119] [2020-10-14 05:12:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:42,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:42,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:42,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 05:12:42,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:42,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:12:42,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:42,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 05:12:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:12:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:42,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:42,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:42,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:42,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:42,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:42,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:12:42,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:42,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:42,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:42,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222695119] [2020-10-14 05:12:42,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:42,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:42,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899236584] [2020-10-14 05:12:42,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:42,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:42,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:42,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:42,038 INFO L87 Difference]: Start difference. First operand 106504 states and 119814 transitions. Second operand 3 states. [2020-10-14 05:12:43,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:43,434 INFO L93 Difference]: Finished difference Result 237576 states and 263174 transitions. [2020-10-14 05:12:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:43,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 05:12:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:43,435 INFO L225 Difference]: With dead ends: 237576 [2020-10-14 05:12:43,435 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:12:43,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:43,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:12:43,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:12:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:12:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:12:43,567 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-10-14 05:12:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:43,567 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:12:43,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:43,568 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:12:43,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:12:43,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 05:12:43,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:12:43,609 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 05:12:43,610 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:12:43,610 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:12:43,610 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:12:43,610 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:12:43,610 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:12:43,610 INFO L268 CegarLoopResult]: For program point L126-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,611 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 191) no Hoare annotation was computed. [2020-10-14 05:12:43,611 INFO L268 CegarLoopResult]: For program point L151-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,611 INFO L268 CegarLoopResult]: For program point L176-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,611 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-10-14 05:12:43,611 INFO L268 CegarLoopResult]: For program point L152(line 152) no Hoare annotation was computed. [2020-10-14 05:12:43,611 INFO L268 CegarLoopResult]: For program point L177(line 177) no Hoare annotation was computed. [2020-10-14 05:12:43,612 INFO L268 CegarLoopResult]: For program point L136-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,612 INFO L268 CegarLoopResult]: For program point L161-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,612 INFO L268 CegarLoopResult]: For program point L120-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,612 INFO L268 CegarLoopResult]: For program point L112-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,612 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 191) no Hoare annotation was computed. [2020-10-14 05:12:43,612 INFO L268 CegarLoopResult]: For program point L137(line 137) no Hoare annotation was computed. [2020-10-14 05:12:43,613 INFO L268 CegarLoopResult]: For program point L104-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,613 INFO L268 CegarLoopResult]: For program point L162(line 162) no Hoare annotation was computed. [2020-10-14 05:12:43,613 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2020-10-14 05:12:43,613 INFO L268 CegarLoopResult]: For program point L96-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,613 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 191) the Hoare annotation is: true [2020-10-14 05:12:43,613 INFO L271 CegarLoopResult]: At program point L187(lines 5 191) the Hoare annotation is: true [2020-10-14 05:12:43,613 INFO L268 CegarLoopResult]: For program point L88-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,613 INFO L268 CegarLoopResult]: For program point L146-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,614 INFO L268 CegarLoopResult]: For program point L47(lines 47 49) no Hoare annotation was computed. [2020-10-14 05:12:43,614 INFO L268 CegarLoopResult]: For program point L80-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,614 INFO L268 CegarLoopResult]: For program point L171-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,614 INFO L268 CegarLoopResult]: For program point L147(line 147) no Hoare annotation was computed. [2020-10-14 05:12:43,614 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-10-14 05:12:43,614 INFO L268 CegarLoopResult]: For program point L131-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,614 INFO L268 CegarLoopResult]: For program point L156-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,614 INFO L271 CegarLoopResult]: At program point L181-1(lines 45 186) the Hoare annotation is: true [2020-10-14 05:12:43,615 INFO L268 CegarLoopResult]: For program point L132(line 132) no Hoare annotation was computed. [2020-10-14 05:12:43,616 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-10-14 05:12:43,616 INFO L268 CegarLoopResult]: For program point L182(line 182) no Hoare annotation was computed. [2020-10-14 05:12:43,616 INFO L264 CegarLoopResult]: At program point L182-1(lines 5 191) the Hoare annotation is: false [2020-10-14 05:12:43,616 INFO L268 CegarLoopResult]: For program point L116-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,616 INFO L268 CegarLoopResult]: For program point L141-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,616 INFO L268 CegarLoopResult]: For program point L108-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,616 INFO L268 CegarLoopResult]: For program point L166-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,616 INFO L268 CegarLoopResult]: For program point L100-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,616 INFO L268 CegarLoopResult]: For program point L92-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,617 INFO L268 CegarLoopResult]: For program point L84-1(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,617 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-10-14 05:12:43,617 INFO L268 CegarLoopResult]: For program point L76(lines 76 78) no Hoare annotation was computed. [2020-10-14 05:12:43,617 INFO L268 CegarLoopResult]: For program point L76-2(lines 45 186) no Hoare annotation was computed. [2020-10-14 05:12:43,617 INFO L268 CegarLoopResult]: For program point L167(line 167) no Hoare annotation was computed. [2020-10-14 05:12:43,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:12:43 BoogieIcfgContainer [2020-10-14 05:12:43,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:12:43,635 INFO L168 Benchmark]: Toolchain (without parser) took 28940.48 ms. Allocated memory was 147.8 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 103.6 MB in the beginning and 879.1 MB in the end (delta: -775.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-10-14 05:12:43,636 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 05:12:43,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.55 ms. Allocated memory is still 147.8 MB. Free memory was 103.6 MB in the beginning and 92.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:43,636 INFO L168 Benchmark]: Boogie Preprocessor took 117.96 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 92.3 MB in the beginning and 181.9 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:43,637 INFO L168 Benchmark]: RCFGBuilder took 391.52 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 160.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:43,637 INFO L168 Benchmark]: TraceAbstraction took 28150.28 ms. Allocated memory was 204.5 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 160.4 MB in the beginning and 879.1 MB in the end (delta: -718.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-10-14 05:12:43,640 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.55 ms. Allocated memory is still 147.8 MB. Free memory was 103.6 MB in the beginning and 92.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.96 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 92.3 MB in the beginning and 181.9 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 391.52 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 160.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28150.28 ms. Allocated memory was 204.5 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 160.4 MB in the beginning and 879.1 MB in the end (delta: -718.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 189]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.9s, OverallIterations: 34, TraceHistogramMax: 1, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3400 SDtfs, 1674 SDslu, 2335 SDs, 0 SdLazy, 181 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106504occurred in iteration=33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.6s AutomataMinimizationTime, 34 MinimizatonAttempts, 16420 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 4106 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 946 NumberOfCodeBlocks, 946 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 912 ConstructedInterpolants, 0 QuantifiedInterpolants, 50676 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...