/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:33:08,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:33:08,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:33:08,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:33:08,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:33:08,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:33:08,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:33:08,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:33:08,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:33:08,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:33:08,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:33:08,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:33:08,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:33:08,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:33:08,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:33:08,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:33:08,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:33:08,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:33:08,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:33:08,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:33:08,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:33:08,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:33:08,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:33:08,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:33:08,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:33:08,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:33:08,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:33:08,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:33:08,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:33:08,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:33:08,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:33:08,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:33:08,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:33:08,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:33:08,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:33:08,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:33:08,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:33:08,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:33:08,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:33:08,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:33:08,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:33:08,726 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 [2020-08-22 01:33:08,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:33:08,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:33:08,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:33:08,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:33:08,751 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:33:08,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:33:08,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:33:08,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:33:08,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:33:08,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:33:08,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:33:08,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:33:08,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:33:08,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:33:08,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:33:08,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:33:08,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:33:08,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:33:08,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:33:08,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:33:08,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:33:08,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:33:08,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:33:08,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:33:08,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:33:08,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:33:08,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:33:08,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:33:08,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:33:08,756 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:33:09,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:33:09,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:33:09,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:33:09,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:33:09,115 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:33:09,115 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-22 01:33:09,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/220c6eead/1c00a5fad8b34c37a59b1fcb445f253c/FLAGf8f39ce14 [2020-08-22 01:33:09,642 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:33:09,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-22 01:33:09,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/220c6eead/1c00a5fad8b34c37a59b1fcb445f253c/FLAGf8f39ce14 [2020-08-22 01:33:09,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/220c6eead/1c00a5fad8b34c37a59b1fcb445f253c [2020-08-22 01:33:09,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:33:09,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:33:09,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:33:09,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:33:09,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:33:09,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:33:09" (1/1) ... [2020-08-22 01:33:09,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdfc9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:33:09, skipping insertion in model container [2020-08-22 01:33:09,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:33:09" (1/1) ... [2020-08-22 01:33:10,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:33:10,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:33:10,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:33:10,277 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:33:10,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:33:10,334 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:33:10,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:33:10 WrapperNode [2020-08-22 01:33:10,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:33:10,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:33:10,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:33:10,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:33:10,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:33:10" (1/1) ... [2020-08-22 01:33:10,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:33:10" (1/1) ... [2020-08-22 01:33:10,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:33:10" (1/1) ... [2020-08-22 01:33:10,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:33:10" (1/1) ... [2020-08-22 01:33:10,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:33:10" (1/1) ... [2020-08-22 01:33:10,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:33:10" (1/1) ... [2020-08-22 01:33:10,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:33:10" (1/1) ... [2020-08-22 01:33:10,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:33:10,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:33:10,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:33:10,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:33:10,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:33:10" (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 [2020-08-22 01:33:10,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:33:10,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:33:10,529 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 01:33:10,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:33:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:33:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 01:33:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 01:33:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 01:33:10,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:33:10,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:33:10,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:33:10,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:33:10,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:33:10,982 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 01:33:10,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:33:10 BoogieIcfgContainer [2020-08-22 01:33:10,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:33:10,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:33:10,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:33:10,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:33:10,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:33:09" (1/3) ... [2020-08-22 01:33:10,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a960723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:33:10, skipping insertion in model container [2020-08-22 01:33:10,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:33:10" (2/3) ... [2020-08-22 01:33:10,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a960723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:33:10, skipping insertion in model container [2020-08-22 01:33:10,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:33:10" (3/3) ... [2020-08-22 01:33:10,996 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-08-22 01:33:11,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:33:11,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-08-22 01:33:11,028 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-08-22 01:33:11,053 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:33:11,053 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:33:11,054 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:33:11,054 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:33:11,054 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:33:11,054 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:33:11,054 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:33:11,054 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:33:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-08-22 01:33:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 01:33:11,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:11,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:11,084 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:11,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:11,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1093455773, now seen corresponding path program 1 times [2020-08-22 01:33:11,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:11,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619947196] [2020-08-22 01:33:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:11,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:11,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619947196] [2020-08-22 01:33:11,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:11,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:33:11,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115115861] [2020-08-22 01:33:11,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:33:11,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:11,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:33:11,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:33:11,396 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-08-22 01:33:11,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:11,880 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2020-08-22 01:33:11,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 01:33:11,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-08-22 01:33:11,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:11,895 INFO L225 Difference]: With dead ends: 137 [2020-08-22 01:33:11,895 INFO L226 Difference]: Without dead ends: 113 [2020-08-22 01:33:11,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:33:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-22 01:33:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2020-08-22 01:33:11,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 01:33:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-08-22 01:33:11,994 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 12 [2020-08-22 01:33:11,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:11,995 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-08-22 01:33:11,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:33:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-08-22 01:33:11,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 01:33:11,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:11,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:11,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:33:11,998 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:11,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:11,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1096690079, now seen corresponding path program 1 times [2020-08-22 01:33:12,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:12,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427477594] [2020-08-22 01:33:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:12,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:12,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427477594] [2020-08-22 01:33:12,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:12,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:33:12,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153082250] [2020-08-22 01:33:12,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:33:12,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:12,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:33:12,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:33:12,099 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 5 states. [2020-08-22 01:33:12,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:12,281 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-22 01:33:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 01:33:12,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-22 01:33:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:12,283 INFO L225 Difference]: With dead ends: 69 [2020-08-22 01:33:12,283 INFO L226 Difference]: Without dead ends: 67 [2020-08-22 01:33:12,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:33:12,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-22 01:33:12,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-08-22 01:33:12,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-22 01:33:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-08-22 01:33:12,302 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 12 [2020-08-22 01:33:12,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:12,302 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-08-22 01:33:12,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:33:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-08-22 01:33:12,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 01:33:12,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:12,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:12,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:33:12,306 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:12,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:12,307 INFO L82 PathProgramCache]: Analyzing trace with hash 362348992, now seen corresponding path program 1 times [2020-08-22 01:33:12,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:12,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084994329] [2020-08-22 01:33:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:12,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084994329] [2020-08-22 01:33:12,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:12,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:33:12,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116054996] [2020-08-22 01:33:12,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:33:12,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:12,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:33:12,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:33:12,379 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-08-22 01:33:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:12,543 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-08-22 01:33:12,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:33:12,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 01:33:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:12,545 INFO L225 Difference]: With dead ends: 73 [2020-08-22 01:33:12,545 INFO L226 Difference]: Without dead ends: 71 [2020-08-22 01:33:12,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:33:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-08-22 01:33:12,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-08-22 01:33:12,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-22 01:33:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-08-22 01:33:12,555 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 13 [2020-08-22 01:33:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:12,555 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-08-22 01:33:12,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:33:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-08-22 01:33:12,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 01:33:12,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:12,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:12,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:33:12,557 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:12,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:12,558 INFO L82 PathProgramCache]: Analyzing trace with hash -2105928756, now seen corresponding path program 1 times [2020-08-22 01:33:12,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:12,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15069242] [2020-08-22 01:33:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:12,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:12,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15069242] [2020-08-22 01:33:12,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:12,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:33:12,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124316332] [2020-08-22 01:33:12,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:33:12,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:12,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:33:12,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:33:12,637 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 6 states. [2020-08-22 01:33:12,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:12,872 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-08-22 01:33:12,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:33:12,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-22 01:33:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:12,874 INFO L225 Difference]: With dead ends: 71 [2020-08-22 01:33:12,875 INFO L226 Difference]: Without dead ends: 69 [2020-08-22 01:33:12,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:33:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-22 01:33:12,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-08-22 01:33:12,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 01:33:12,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-08-22 01:33:12,885 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2020-08-22 01:33:12,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:12,886 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-08-22 01:33:12,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:33:12,886 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-08-22 01:33:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 01:33:12,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:12,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:12,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:33:12,888 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:12,888 INFO L82 PathProgramCache]: Analyzing trace with hash 325126884, now seen corresponding path program 1 times [2020-08-22 01:33:12,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:12,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041783028] [2020-08-22 01:33:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:12,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:12,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041783028] [2020-08-22 01:33:12,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:12,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:33:12,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736367530] [2020-08-22 01:33:12,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:33:12,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:12,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:33:12,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:33:12,955 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 6 states. [2020-08-22 01:33:13,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:13,167 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-22 01:33:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:33:13,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-22 01:33:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:13,169 INFO L225 Difference]: With dead ends: 69 [2020-08-22 01:33:13,169 INFO L226 Difference]: Without dead ends: 67 [2020-08-22 01:33:13,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:33:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-22 01:33:13,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-08-22 01:33:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-22 01:33:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-08-22 01:33:13,185 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 15 [2020-08-22 01:33:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:13,185 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-08-22 01:33:13,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:33:13,186 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-08-22 01:33:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 01:33:13,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:13,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:13,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:33:13,187 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:13,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:13,188 INFO L82 PathProgramCache]: Analyzing trace with hash -858848822, now seen corresponding path program 1 times [2020-08-22 01:33:13,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:13,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196895415] [2020-08-22 01:33:13,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:13,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:13,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196895415] [2020-08-22 01:33:13,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:13,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:33:13,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963221129] [2020-08-22 01:33:13,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:33:13,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:13,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:33:13,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:33:13,272 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-08-22 01:33:13,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:13,492 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-08-22 01:33:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:33:13,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-22 01:33:13,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:13,494 INFO L225 Difference]: With dead ends: 112 [2020-08-22 01:33:13,494 INFO L226 Difference]: Without dead ends: 110 [2020-08-22 01:33:13,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:33:13,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-22 01:33:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 64. [2020-08-22 01:33:13,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-22 01:33:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-08-22 01:33:13,502 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 16 [2020-08-22 01:33:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:13,502 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-08-22 01:33:13,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:33:13,503 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-08-22 01:33:13,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 01:33:13,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:13,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:13,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:33:13,504 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:13,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:13,505 INFO L82 PathProgramCache]: Analyzing trace with hash -859278805, now seen corresponding path program 1 times [2020-08-22 01:33:13,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:13,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119552043] [2020-08-22 01:33:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:13,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:13,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119552043] [2020-08-22 01:33:13,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:13,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:33:13,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581032549] [2020-08-22 01:33:13,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:33:13,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:13,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:33:13,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:33:13,587 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-08-22 01:33:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:13,726 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-08-22 01:33:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 01:33:13,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 01:33:13,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:13,727 INFO L225 Difference]: With dead ends: 65 [2020-08-22 01:33:13,727 INFO L226 Difference]: Without dead ends: 61 [2020-08-22 01:33:13,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:33:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-22 01:33:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-22 01:33:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-22 01:33:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-08-22 01:33:13,734 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 16 [2020-08-22 01:33:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:13,735 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-08-22 01:33:13,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:33:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-08-22 01:33:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 01:33:13,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:13,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:13,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:33:13,736 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:13,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:13,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1489001901, now seen corresponding path program 1 times [2020-08-22 01:33:13,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:13,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761582704] [2020-08-22 01:33:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:13,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:13,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761582704] [2020-08-22 01:33:13,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:13,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:33:13,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177070501] [2020-08-22 01:33:13,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:33:13,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:13,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:33:13,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:33:13,818 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 5 states. [2020-08-22 01:33:13,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:13,932 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-08-22 01:33:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 01:33:13,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 01:33:13,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:13,934 INFO L225 Difference]: With dead ends: 61 [2020-08-22 01:33:13,934 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 01:33:13,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:33:13,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 01:33:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-08-22 01:33:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-22 01:33:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-08-22 01:33:13,941 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2020-08-22 01:33:13,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:13,941 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-08-22 01:33:13,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:33:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-08-22 01:33:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 01:33:13,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:13,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:13,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:33:13,943 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:13,943 INFO L82 PathProgramCache]: Analyzing trace with hash -854506496, now seen corresponding path program 1 times [2020-08-22 01:33:13,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:13,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94829662] [2020-08-22 01:33:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:14,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:14,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94829662] [2020-08-22 01:33:14,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:14,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:33:14,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252870488] [2020-08-22 01:33:14,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:33:14,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:14,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:33:14,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:33:14,062 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-08-22 01:33:14,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:14,289 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-08-22 01:33:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:33:14,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-08-22 01:33:14,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:14,291 INFO L225 Difference]: With dead ends: 95 [2020-08-22 01:33:14,291 INFO L226 Difference]: Without dead ends: 93 [2020-08-22 01:33:14,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:33:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-22 01:33:14,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2020-08-22 01:33:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 01:33:14,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-08-22 01:33:14,302 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 17 [2020-08-22 01:33:14,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:14,302 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-08-22 01:33:14,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:33:14,302 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-08-22 01:33:14,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 01:33:14,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:14,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:14,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:33:14,304 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:14,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:14,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1071358986, now seen corresponding path program 1 times [2020-08-22 01:33:14,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:14,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920007521] [2020-08-22 01:33:14,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:14,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:14,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920007521] [2020-08-22 01:33:14,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:14,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:33:14,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778219859] [2020-08-22 01:33:14,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:33:14,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:14,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:33:14,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:33:14,383 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-08-22 01:33:14,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:14,563 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-08-22 01:33:14,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:33:14,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-22 01:33:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:14,564 INFO L225 Difference]: With dead ends: 72 [2020-08-22 01:33:14,565 INFO L226 Difference]: Without dead ends: 70 [2020-08-22 01:33:14,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:33:14,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-22 01:33:14,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-08-22 01:33:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-22 01:33:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-08-22 01:33:14,570 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2020-08-22 01:33:14,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:14,571 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-08-22 01:33:14,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:33:14,571 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-08-22 01:33:14,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 01:33:14,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:14,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:14,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:33:14,572 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:14,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1069819786, now seen corresponding path program 1 times [2020-08-22 01:33:14,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:14,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152773389] [2020-08-22 01:33:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:14,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:14,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:14,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152773389] [2020-08-22 01:33:14,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:14,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:33:14,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133186871] [2020-08-22 01:33:14,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:33:14,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:14,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:33:14,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:33:14,618 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-08-22 01:33:14,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:14,756 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-08-22 01:33:14,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:33:14,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-22 01:33:14,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:14,757 INFO L225 Difference]: With dead ends: 53 [2020-08-22 01:33:14,758 INFO L226 Difference]: Without dead ends: 51 [2020-08-22 01:33:14,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:33:14,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-22 01:33:14,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-08-22 01:33:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-22 01:33:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-08-22 01:33:14,763 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 17 [2020-08-22 01:33:14,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:14,764 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-08-22 01:33:14,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:33:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-08-22 01:33:14,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 01:33:14,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:14,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:14,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 01:33:14,765 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:14,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:14,766 INFO L82 PathProgramCache]: Analyzing trace with hash -726143538, now seen corresponding path program 1 times [2020-08-22 01:33:14,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:14,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139126287] [2020-08-22 01:33:14,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:14,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:14,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139126287] [2020-08-22 01:33:14,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:14,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:33:14,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259627783] [2020-08-22 01:33:14,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:33:14,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:14,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:33:14,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:33:14,859 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-08-22 01:33:14,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:14,999 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-08-22 01:33:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:33:15,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-22 01:33:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:15,001 INFO L225 Difference]: With dead ends: 50 [2020-08-22 01:33:15,001 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 01:33:15,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:33:15,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 01:33:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-08-22 01:33:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-22 01:33:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-08-22 01:33:15,007 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 18 [2020-08-22 01:33:15,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:15,008 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-08-22 01:33:15,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:33:15,008 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-08-22 01:33:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 01:33:15,009 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:15,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:15,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 01:33:15,009 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:15,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:15,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1148978332, now seen corresponding path program 1 times [2020-08-22 01:33:15,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:15,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468108408] [2020-08-22 01:33:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:15,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468108408] [2020-08-22 01:33:15,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:15,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:33:15,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215779254] [2020-08-22 01:33:15,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:33:15,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:15,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:33:15,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:33:15,073 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2020-08-22 01:33:15,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:15,236 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-08-22 01:33:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:33:15,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-22 01:33:15,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:15,238 INFO L225 Difference]: With dead ends: 69 [2020-08-22 01:33:15,238 INFO L226 Difference]: Without dead ends: 67 [2020-08-22 01:33:15,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:33:15,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-22 01:33:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2020-08-22 01:33:15,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 01:33:15,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-08-22 01:33:15,243 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-08-22 01:33:15,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:15,244 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-08-22 01:33:15,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:33:15,244 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-08-22 01:33:15,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 01:33:15,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:15,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:15,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 01:33:15,245 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:15,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:15,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1147612912, now seen corresponding path program 1 times [2020-08-22 01:33:15,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:15,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454076792] [2020-08-22 01:33:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:15,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454076792] [2020-08-22 01:33:15,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:15,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:33:15,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52811144] [2020-08-22 01:33:15,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:33:15,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:15,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:33:15,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:33:15,307 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-08-22 01:33:15,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:15,450 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-08-22 01:33:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:33:15,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-22 01:33:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:15,451 INFO L225 Difference]: With dead ends: 57 [2020-08-22 01:33:15,451 INFO L226 Difference]: Without dead ends: 55 [2020-08-22 01:33:15,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:33:15,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-22 01:33:15,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2020-08-22 01:33:15,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 01:33:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-08-22 01:33:15,456 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 18 [2020-08-22 01:33:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:15,456 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-08-22 01:33:15,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:33:15,456 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-08-22 01:33:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 01:33:15,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:15,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:15,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 01:33:15,457 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:15,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:15,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1195328162, now seen corresponding path program 1 times [2020-08-22 01:33:15,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:15,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628426077] [2020-08-22 01:33:15,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:15,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:15,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628426077] [2020-08-22 01:33:15,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:15,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:33:15,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830956304] [2020-08-22 01:33:15,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:33:15,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:15,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:33:15,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:33:15,542 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-08-22 01:33:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:15,656 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-08-22 01:33:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 01:33:15,656 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-22 01:33:15,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:15,657 INFO L225 Difference]: With dead ends: 41 [2020-08-22 01:33:15,657 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 01:33:15,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:33:15,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 01:33:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-22 01:33:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-22 01:33:15,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-22 01:33:15,663 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-08-22 01:33:15,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:15,664 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-22 01:33:15,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:33:15,664 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-22 01:33:15,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 01:33:15,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:15,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:15,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 01:33:15,665 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:15,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:15,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1258593065, now seen corresponding path program 1 times [2020-08-22 01:33:15,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:15,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908492170] [2020-08-22 01:33:15,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:15,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:15,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908492170] [2020-08-22 01:33:15,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:15,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:33:15,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362467799] [2020-08-22 01:33:15,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:33:15,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:15,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:33:15,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:33:15,727 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-08-22 01:33:15,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:15,872 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-08-22 01:33:15,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:33:15,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-22 01:33:15,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:15,875 INFO L225 Difference]: With dead ends: 52 [2020-08-22 01:33:15,875 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 01:33:15,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:33:15,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 01:33:15,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2020-08-22 01:33:15,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 01:33:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-22 01:33:15,880 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2020-08-22 01:33:15,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:15,880 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-22 01:33:15,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:33:15,881 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-22 01:33:15,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 01:33:15,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:15,882 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] [2020-08-22 01:33:15,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 01:33:15,882 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:15,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:15,882 INFO L82 PathProgramCache]: Analyzing trace with hash -950489901, now seen corresponding path program 1 times [2020-08-22 01:33:15,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:15,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471539636] [2020-08-22 01:33:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:15,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:15,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471539636] [2020-08-22 01:33:15,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:15,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:33:15,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053089489] [2020-08-22 01:33:15,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:33:15,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:15,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:33:15,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:33:15,937 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-22 01:33:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:16,034 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-08-22 01:33:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 01:33:16,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-22 01:33:16,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:16,035 INFO L225 Difference]: With dead ends: 35 [2020-08-22 01:33:16,036 INFO L226 Difference]: Without dead ends: 33 [2020-08-22 01:33:16,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:33:16,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-22 01:33:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-22 01:33:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-22 01:33:16,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-22 01:33:16,042 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-08-22 01:33:16,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:16,043 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-22 01:33:16,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:33:16,043 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-22 01:33:16,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 01:33:16,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:33:16,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:33:16,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 01:33:16,044 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:33:16,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:33:16,045 INFO L82 PathProgramCache]: Analyzing trace with hash 599587266, now seen corresponding path program 1 times [2020-08-22 01:33:16,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:33:16,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649310793] [2020-08-22 01:33:16,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:33:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:33:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:33:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:33:16,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649310793] [2020-08-22 01:33:16,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:33:16,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:33:16,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615441568] [2020-08-22 01:33:16,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:33:16,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:33:16,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:33:16,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:33:16,117 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-08-22 01:33:16,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:33:16,210 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-22 01:33:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 01:33:16,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-22 01:33:16,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:33:16,211 INFO L225 Difference]: With dead ends: 37 [2020-08-22 01:33:16,211 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 01:33:16,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:33:16,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 01:33:16,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 01:33:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 01:33:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 01:33:16,213 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-22 01:33:16,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:33:16,213 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 01:33:16,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:33:16,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 01:33:16,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 01:33:16,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 01:33:16,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 01:33:16,525 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-22 01:33:16,526 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_383_0~0 |old(~__tmp_383_0~0)|) (= ~__tmp_247_0~0 |old(~__tmp_247_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_305~0 |old(~__return_305~0)|)) [2020-08-22 01:33:16,526 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 01:33:16,526 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 01:33:16,526 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 01:33:16,526 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 01:33:16,526 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 01:33:16,527 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-22 01:33:16,527 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-22 01:33:16,527 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-22 01:33:16,527 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-22 01:33:16,527 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-08-22 01:33:16,527 INFO L268 CegarLoopResult]: For program point L349(line 349) no Hoare annotation was computed. [2020-08-22 01:33:16,527 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 373) no Hoare annotation was computed. [2020-08-22 01:33:16,527 INFO L268 CegarLoopResult]: For program point L151(lines 151 159) no Hoare annotation was computed. [2020-08-22 01:33:16,528 INFO L268 CegarLoopResult]: For program point L52(lines 52 252) no Hoare annotation was computed. [2020-08-22 01:33:16,528 INFO L268 CegarLoopResult]: For program point L308(line 308) no Hoare annotation was computed. [2020-08-22 01:33:16,528 INFO L268 CegarLoopResult]: For program point L275(lines 275 362) no Hoare annotation was computed. [2020-08-22 01:33:16,528 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 235) no Hoare annotation was computed. [2020-08-22 01:33:16,528 INFO L268 CegarLoopResult]: For program point L69(lines 69 93) no Hoare annotation was computed. [2020-08-22 01:33:16,528 INFO L268 CegarLoopResult]: For program point L185(lines 185 195) no Hoare annotation was computed. [2020-08-22 01:33:16,528 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 141) no Hoare annotation was computed. [2020-08-22 01:33:16,528 INFO L268 CegarLoopResult]: For program point L111(lines 111 202) no Hoare annotation was computed. [2020-08-22 01:33:16,529 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2020-08-22 01:33:16,529 INFO L268 CegarLoopResult]: For program point L235(line 235) no Hoare annotation was computed. [2020-08-22 01:33:16,529 INFO L264 CegarLoopResult]: At program point L326(lines 30 366) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (<= 0 main_~main__t~0)) [2020-08-22 01:33:16,529 INFO L264 CegarLoopResult]: At program point L194(lines 58 252) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-08-22 01:33:16,529 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-08-22 01:33:16,530 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2020-08-22 01:33:16,530 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-08-22 01:33:16,530 INFO L268 CegarLoopResult]: For program point L277(line 277) no Hoare annotation was computed. [2020-08-22 01:33:16,530 INFO L268 CegarLoopResult]: For program point L335(lines 335 358) no Hoare annotation was computed. [2020-08-22 01:33:16,530 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 373) no Hoare annotation was computed. [2020-08-22 01:33:16,530 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2020-08-22 01:33:16,530 INFO L268 CegarLoopResult]: For program point L104(lines 104 208) no Hoare annotation was computed. [2020-08-22 01:33:16,530 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-08-22 01:33:16,531 INFO L268 CegarLoopResult]: For program point L294(lines 294 316) no Hoare annotation was computed. [2020-08-22 01:33:16,531 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-08-22 01:33:16,531 INFO L268 CegarLoopResult]: For program point L30(lines 30 366) no Hoare annotation was computed. [2020-08-22 01:33:16,531 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 13 373) the Hoare annotation is: (and (= |old(~__tmp_247_0~0)| ~__tmp_247_0~0) (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0)) [2020-08-22 01:33:16,531 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-08-22 01:33:16,531 INFO L268 CegarLoopResult]: For program point L22(lines 22 367) no Hoare annotation was computed. [2020-08-22 01:33:16,531 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-08-22 01:33:16,532 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-08-22 01:33:16,532 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 349) no Hoare annotation was computed. [2020-08-22 01:33:16,532 INFO L268 CegarLoopResult]: For program point L287(lines 287 361) no Hoare annotation was computed. [2020-08-22 01:33:16,532 INFO L268 CegarLoopResult]: For program point L221(lines 221 243) no Hoare annotation was computed. [2020-08-22 01:33:16,532 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 153) no Hoare annotation was computed. [2020-08-22 01:33:16,532 INFO L268 CegarLoopResult]: For program point L81(lines 81 91) no Hoare annotation was computed. [2020-08-22 01:33:16,532 INFO L268 CegarLoopResult]: For program point L337(line 337) no Hoare annotation was computed. [2020-08-22 01:33:16,532 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 337) no Hoare annotation was computed. [2020-08-22 01:33:16,533 INFO L268 CegarLoopResult]: For program point L139(lines 139 161) no Hoare annotation was computed. [2020-08-22 01:33:16,533 INFO L268 CegarLoopResult]: For program point L40(lines 40 254) no Hoare annotation was computed. [2020-08-22 01:33:16,533 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-08-22 01:33:16,533 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-08-22 01:33:16,533 INFO L268 CegarLoopResult]: For program point L123(lines 123 200) no Hoare annotation was computed. [2020-08-22 01:33:16,533 INFO L271 CegarLoopResult]: At program point L313(lines 30 366) the Hoare annotation is: true [2020-08-22 01:33:16,533 INFO L268 CegarLoopResult]: For program point L214(lines 214 249) no Hoare annotation was computed. [2020-08-22 01:33:16,533 INFO L268 CegarLoopResult]: For program point L173(lines 173 197) no Hoare annotation was computed. [2020-08-22 01:33:16,533 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2020-08-22 01:33:16,534 INFO L268 CegarLoopResult]: For program point L264(lines 264 364) no Hoare annotation was computed. [2020-08-22 01:33:16,534 INFO L268 CegarLoopResult]: For program point L132(lines 132 199) no Hoare annotation was computed. [2020-08-22 01:33:16,534 INFO L264 CegarLoopResult]: At program point L355(lines 281 362) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~13 0)) (<= 0 main_~main__t~0)) [2020-08-22 01:33:16,534 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2020-08-22 01:33:16,534 INFO L268 CegarLoopResult]: For program point L223(line 223) no Hoare annotation was computed. [2020-08-22 01:33:16,534 INFO L268 CegarLoopResult]: For program point L347(lines 347 356) no Hoare annotation was computed. [2020-08-22 01:33:16,534 INFO L264 CegarLoopResult]: At program point L248(lines 100 250) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-08-22 01:33:16,535 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-22 01:33:16,535 INFO L268 CegarLoopResult]: For program point L306(lines 306 314) no Hoare annotation was computed. [2020-08-22 01:33:16,535 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-08-22 01:33:16,535 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-08-22 01:33:16,535 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-08-22 01:33:16,535 INFO L268 CegarLoopResult]: For program point L100(lines 100 250) no Hoare annotation was computed. [2020-08-22 01:33:16,535 INFO L268 CegarLoopResult]: For program point L323(lines 323 360) no Hoare annotation was computed. [2020-08-22 01:33:16,536 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2020-08-22 01:33:16,536 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-08-22 01:33:16,536 INFO L268 CegarLoopResult]: For program point L18(lines 18 372) no Hoare annotation was computed. [2020-08-22 01:33:16,536 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 277) no Hoare annotation was computed. [2020-08-22 01:33:16,536 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-08-22 01:33:16,536 INFO L268 CegarLoopResult]: For program point L233(lines 233 241) no Hoare annotation was computed. [2020-08-22 01:33:16,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:33:16 BoogieIcfgContainer [2020-08-22 01:33:16,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:33:16,560 INFO L168 Benchmark]: Toolchain (without parser) took 6572.05 ms. Allocated memory was 138.9 MB in the beginning and 285.2 MB in the end (delta: 146.3 MB). Free memory was 102.3 MB in the beginning and 204.9 MB in the end (delta: -102.6 MB). Peak memory consumption was 153.8 MB. Max. memory is 7.1 GB. [2020-08-22 01:33:16,561 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 01:33:16,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.09 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 89.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-22 01:33:16,562 INFO L168 Benchmark]: Boogie Preprocessor took 129.20 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 89.2 MB in the beginning and 178.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-22 01:33:16,563 INFO L168 Benchmark]: RCFGBuilder took 522.02 ms. Allocated memory is still 201.3 MB. Free memory was 178.2 MB in the beginning and 153.4 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-08-22 01:33:16,563 INFO L168 Benchmark]: TraceAbstraction took 5568.80 ms. Allocated memory was 201.3 MB in the beginning and 285.2 MB in the end (delta: 83.9 MB). Free memory was 153.4 MB in the beginning and 204.9 MB in the end (delta: -51.5 MB). Peak memory consumption was 142.4 MB. Max. memory is 7.1 GB. [2020-08-22 01:33:16,566 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.09 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 89.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.20 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 89.2 MB in the beginning and 178.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 522.02 ms. Allocated memory is still 201.3 MB. Free memory was 178.2 MB in the beginning and 153.4 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5568.80 ms. Allocated memory was 201.3 MB in the beginning and 285.2 MB in the end (delta: 83.9 MB). Free memory was 153.4 MB in the beginning and 204.9 MB in the end (delta: -51.5 MB). Peak memory consumption was 142.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 337]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 349]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 153]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 296]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 187]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 223]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 308]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 277]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 113]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 235]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 71]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 141]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 125]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 83]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 54]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) && main__t < main__tagbuf_len + 1) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 281]: Loop Invariant Derived loop invariant: (main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 0 <= main__t - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 80 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 802 SDtfs, 1459 SDslu, 821 SDs, 0 SdLazy, 2124 SolverSat, 146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 209 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 76 HoareAnnotationTreeSize, 9 FomulaSimplifications, 50568 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1351 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 280 ConstructedInterpolants, 0 QuantifiedInterpolants, 13380 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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...