/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:11:20,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:11:20,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:11:20,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:11:20,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:11:20,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:11:20,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:11:20,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:11:20,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:11:20,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:11:20,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:11:20,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:11:20,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:11:20,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:11:20,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:11:20,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:11:20,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:11:20,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:11:20,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:11:20,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:11:20,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:11:20,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:11:20,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:11:20,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:11:20,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:11:20,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:11:20,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:11:20,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:11:20,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:11:20,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:11:20,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:11:20,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:11:20,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:11:20,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:11:20,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:11:20,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:11:20,631 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 05:11:20,651 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:11:20,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:11:20,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:11:20,652 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:11:20,653 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:11:20,653 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:11:20,653 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:11:20,653 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:11:20,653 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:11:20,654 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:11:20,654 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:11:20,654 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:11:20,654 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:11:20,655 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:11:20,655 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:11:20,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:11:20,656 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:11:20,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:11:20,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:11:20,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:11:20,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:11:20,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:11:20,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:11:20,657 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:11:20,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:11:20,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:11:20,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:11:20,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:11:20,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:11:20,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:11:20,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:11:20,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:11:20,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:11:20,659 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:11:20,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:11:20,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:11:20,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:11:20,660 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:11:20,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:11:20,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:11:21,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:11:21,003 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:11:21,003 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:11:21,004 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product20.cil.c [2019-11-24 05:11:21,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc308523f/773740b6701b49ff8dde18af53d5ae16/FLAGa05d371e4 [2019-11-24 05:11:21,669 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:11:21,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product20.cil.c [2019-11-24 05:11:21,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc308523f/773740b6701b49ff8dde18af53d5ae16/FLAGa05d371e4 [2019-11-24 05:11:21,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc308523f/773740b6701b49ff8dde18af53d5ae16 [2019-11-24 05:11:21,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:11:21,912 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:11:21,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:11:21,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:11:21,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:11:21,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:11:21" (1/1) ... [2019-11-24 05:11:21,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20645e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:21, skipping insertion in model container [2019-11-24 05:11:21,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:11:21" (1/1) ... [2019-11-24 05:11:21,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:11:22,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:11:22,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:11:22,715 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:11:22,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:11:22,948 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:11:22,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:22 WrapperNode [2019-11-24 05:11:22,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:11:22,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:11:22,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:11:22,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:11:22,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:22" (1/1) ... [2019-11-24 05:11:22,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:22" (1/1) ... [2019-11-24 05:11:23,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:11:23,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:11:23,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:11:23,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:11:23,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:22" (1/1) ... [2019-11-24 05:11:23,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:22" (1/1) ... [2019-11-24 05:11:23,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:22" (1/1) ... [2019-11-24 05:11:23,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:22" (1/1) ... [2019-11-24 05:11:23,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:22" (1/1) ... [2019-11-24 05:11:23,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:22" (1/1) ... [2019-11-24 05:11:23,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:22" (1/1) ... [2019-11-24 05:11:23,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:11:23,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:11:23,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:11:23,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:11:23,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-24 05:11:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:11:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:11:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:11:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:11:23,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:11:35,382 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:11:35,382 INFO L284 CfgBuilder]: Removed 541 assume(true) statements. [2019-11-24 05:11:35,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:11:35 BoogieIcfgContainer [2019-11-24 05:11:35,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:11:35,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:11:35,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:11:35,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:11:35,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:11:21" (1/3) ... [2019-11-24 05:11:35,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3c59ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:11:35, skipping insertion in model container [2019-11-24 05:11:35,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:11:22" (2/3) ... [2019-11-24 05:11:35,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3c59ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:11:35, skipping insertion in model container [2019-11-24 05:11:35,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:11:35" (3/3) ... [2019-11-24 05:11:35,395 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product20.cil.c [2019-11-24 05:11:35,403 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:11:35,409 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:11:35,420 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:11:35,442 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:11:35,442 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:11:35,442 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:11:35,442 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:11:35,443 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:11:35,443 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:11:35,443 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:11:35,443 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:11:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 05:11:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:11:35,466 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:11:35,467 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:11:35,468 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:11:35,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:11:35,474 INFO L82 PathProgramCache]: Analyzing trace with hash 328091804, now seen corresponding path program 1 times [2019-11-24 05:11:35,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:11:35,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607953198] [2019-11-24 05:11:35,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:11:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:11:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:11:35,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607953198] [2019-11-24 05:11:35,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:11:35,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:11:35,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179096033] [2019-11-24 05:11:35,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:11:35,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:11:35,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:11:35,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:11:35,915 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 05:11:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:11:35,942 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 05:11:35,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:11:35,943 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:11:35,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:11:35,962 INFO L225 Difference]: With dead ends: 100 [2019-11-24 05:11:35,962 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:11:35,967 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:11:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:11:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 05:11:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 05:11:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 05:11:36,017 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 05:11:36,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:11:36,017 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 05:11:36,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:11:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 05:11:36,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:11:36,018 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:11:36,018 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:11:36,019 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:11:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:11:36,020 INFO L82 PathProgramCache]: Analyzing trace with hash -240493793, now seen corresponding path program 1 times [2019-11-24 05:11:36,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:11:36,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033281771] [2019-11-24 05:11:36,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:11:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:11:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:11:36,121 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033281771] [2019-11-24 05:11:36,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:11:36,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:11:36,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046545758] [2019-11-24 05:11:36,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:11:36,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:11:36,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:11:36,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:11:36,126 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 05:11:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:11:36,147 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 05:11:36,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:11:36,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:11:36,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:11:36,153 INFO L225 Difference]: With dead ends: 94 [2019-11-24 05:11:36,153 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 05:11:36,155 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:11:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 05:11:36,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 05:11:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 05:11:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 05:11:36,178 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 05:11:36,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:11:36,178 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 05:11:36,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:11:36,179 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 05:11:36,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:11:36,180 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:11:36,181 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:11:36,181 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:11:36,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:11:36,182 INFO L82 PathProgramCache]: Analyzing trace with hash -967136531, now seen corresponding path program 1 times [2019-11-24 05:11:36,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:11:36,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83779116] [2019-11-24 05:11:36,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:11:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:11:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:11:36,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83779116] [2019-11-24 05:11:36,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:11:36,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:11:36,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043642096] [2019-11-24 05:11:36,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:11:36,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:11:36,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:11:36,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:11:36,363 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 3 states. [2019-11-24 05:11:36,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:11:36,481 INFO L93 Difference]: Finished difference Result 86 states and 114 transitions. [2019-11-24 05:11:36,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:11:36,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 05:11:36,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:11:36,486 INFO L225 Difference]: With dead ends: 86 [2019-11-24 05:11:36,486 INFO L226 Difference]: Without dead ends: 57 [2019-11-24 05:11:36,489 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:11:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-24 05:11:36,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2019-11-24 05:11:36,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-24 05:11:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2019-11-24 05:11:36,504 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 13 [2019-11-24 05:11:36,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:11:36,504 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2019-11-24 05:11:36,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:11:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2019-11-24 05:11:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:11:36,506 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:11:36,506 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:11:36,507 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:11:36,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:11:36,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1506072846, now seen corresponding path program 1 times [2019-11-24 05:11:36,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:11:36,508 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146631318] [2019-11-24 05:11:36,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:11:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:11:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:11:36,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146631318] [2019-11-24 05:11:36,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:11:36,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:11:36,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017315136] [2019-11-24 05:11:36,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:11:36,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:11:36,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:11:36,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:11:36,659 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand 5 states. [2019-11-24 05:11:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:11:36,820 INFO L93 Difference]: Finished difference Result 124 states and 174 transitions. [2019-11-24 05:11:36,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:11:36,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-24 05:11:36,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:11:36,822 INFO L225 Difference]: With dead ends: 124 [2019-11-24 05:11:36,822 INFO L226 Difference]: Without dead ends: 101 [2019-11-24 05:11:36,823 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:11:36,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-24 05:11:36,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2019-11-24 05:11:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-24 05:11:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 129 transitions. [2019-11-24 05:11:36,834 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 129 transitions. Word has length 15 [2019-11-24 05:11:36,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:11:36,834 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 129 transitions. [2019-11-24 05:11:36,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:11:36,835 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 129 transitions. [2019-11-24 05:11:36,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 05:11:36,836 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:11:36,836 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:11:36,836 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:11:36,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:11:36,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1331588813, now seen corresponding path program 1 times [2019-11-24 05:11:36,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:11:36,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727205914] [2019-11-24 05:11:36,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:11:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:11:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:11:37,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727205914] [2019-11-24 05:11:37,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:11:37,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-24 05:11:37,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386769505] [2019-11-24 05:11:37,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-24 05:11:37,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:11:37,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-24 05:11:37,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-24 05:11:37,169 INFO L87 Difference]: Start difference. First operand 81 states and 129 transitions. Second operand 9 states. [2019-11-24 05:11:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:11:38,064 INFO L93 Difference]: Finished difference Result 129 states and 201 transitions. [2019-11-24 05:11:38,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-24 05:11:38,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-24 05:11:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:11:38,068 INFO L225 Difference]: With dead ends: 129 [2019-11-24 05:11:38,068 INFO L226 Difference]: Without dead ends: 120 [2019-11-24 05:11:38,069 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-11-24 05:11:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-11-24 05:11:38,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 86. [2019-11-24 05:11:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-24 05:11:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 134 transitions. [2019-11-24 05:11:38,081 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 134 transitions. Word has length 18 [2019-11-24 05:11:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:11:38,081 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 134 transitions. [2019-11-24 05:11:38,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-24 05:11:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 134 transitions. [2019-11-24 05:11:38,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 05:11:38,082 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:11:38,082 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:11:38,083 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:11:38,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:11:38,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1340498525, now seen corresponding path program 1 times [2019-11-24 05:11:38,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:11:38,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136609105] [2019-11-24 05:11:38,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:11:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:11:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:11:38,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136609105] [2019-11-24 05:11:38,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:11:38,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-24 05:11:38,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927833244] [2019-11-24 05:11:38,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-24 05:11:38,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:11:38,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-24 05:11:38,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-24 05:11:38,355 INFO L87 Difference]: Start difference. First operand 86 states and 134 transitions. Second operand 9 states. [2019-11-24 05:11:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:11:39,179 INFO L93 Difference]: Finished difference Result 163 states and 258 transitions. [2019-11-24 05:11:39,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-24 05:11:39,180 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-24 05:11:39,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:11:39,183 INFO L225 Difference]: With dead ends: 163 [2019-11-24 05:11:39,184 INFO L226 Difference]: Without dead ends: 144 [2019-11-24 05:11:39,184 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-11-24 05:11:39,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-11-24 05:11:39,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2019-11-24 05:11:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-11-24 05:11:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 232 transitions. [2019-11-24 05:11:39,215 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 232 transitions. Word has length 18 [2019-11-24 05:11:39,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:11:39,216 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 232 transitions. [2019-11-24 05:11:39,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-24 05:11:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 232 transitions. [2019-11-24 05:11:39,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 05:11:39,217 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:11:39,217 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:11:39,218 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:11:39,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:11:39,218 INFO L82 PathProgramCache]: Analyzing trace with hash -578191494, now seen corresponding path program 1 times [2019-11-24 05:11:39,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:11:39,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540998076] [2019-11-24 05:11:39,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:11:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:11:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:11:39,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540998076] [2019-11-24 05:11:39,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:11:39,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:11:39,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280744262] [2019-11-24 05:11:39,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:11:39,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:11:39,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:11:39,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:11:39,279 INFO L87 Difference]: Start difference. First operand 140 states and 232 transitions. Second operand 3 states. [2019-11-24 05:11:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:11:39,319 INFO L93 Difference]: Finished difference Result 412 states and 684 transitions. [2019-11-24 05:11:39,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:11:39,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-24 05:11:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:11:39,322 INFO L225 Difference]: With dead ends: 412 [2019-11-24 05:11:39,322 INFO L226 Difference]: Without dead ends: 274 [2019-11-24 05:11:39,330 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:11:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2019-11-24 05:11:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 232. [2019-11-24 05:11:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2019-11-24 05:11:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 405 transitions. [2019-11-24 05:11:39,376 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 405 transitions. Word has length 19 [2019-11-24 05:11:39,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:11:39,376 INFO L462 AbstractCegarLoop]: Abstraction has 232 states and 405 transitions. [2019-11-24 05:11:39,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:11:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 405 transitions. [2019-11-24 05:11:39,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-24 05:11:39,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:11:39,378 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:11:39,379 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:11:39,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:11:39,379 INFO L82 PathProgramCache]: Analyzing trace with hash -600000449, now seen corresponding path program 1 times [2019-11-24 05:11:39,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:11:39,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856561604] [2019-11-24 05:11:39,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:11:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:11:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:11:39,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856561604] [2019-11-24 05:11:39,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:11:39,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 05:11:39,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924324944] [2019-11-24 05:11:39,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-24 05:11:39,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:11:39,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-24 05:11:39,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:11:39,743 INFO L87 Difference]: Start difference. First operand 232 states and 405 transitions. Second operand 7 states. [2019-11-24 05:11:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:11:40,546 INFO L93 Difference]: Finished difference Result 365 states and 625 transitions. [2019-11-24 05:11:40,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:11:40,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-11-24 05:11:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:11:40,549 INFO L225 Difference]: With dead ends: 365 [2019-11-24 05:11:40,550 INFO L226 Difference]: Without dead ends: 346 [2019-11-24 05:11:40,550 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-24 05:11:40,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2019-11-24 05:11:40,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 324. [2019-11-24 05:11:40,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-11-24 05:11:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 577 transitions. [2019-11-24 05:11:40,584 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 577 transitions. Word has length 20 [2019-11-24 05:11:40,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:11:40,584 INFO L462 AbstractCegarLoop]: Abstraction has 324 states and 577 transitions. [2019-11-24 05:11:40,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-24 05:11:40,585 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 577 transitions. [2019-11-24 05:11:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-24 05:11:40,592 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:11:40,592 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:11:40,592 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:11:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:11:40,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1061273331, now seen corresponding path program 1 times [2019-11-24 05:11:40,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:11:40,594 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075314942] [2019-11-24 05:11:40,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:11:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:11:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:11:40,652 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075314942] [2019-11-24 05:11:40,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:11:40,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:11:40,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097367300] [2019-11-24 05:11:40,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:11:40,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:11:40,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:11:40,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:11:40,655 INFO L87 Difference]: Start difference. First operand 324 states and 577 transitions. Second operand 3 states. [2019-11-24 05:11:40,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:11:40,704 INFO L93 Difference]: Finished difference Result 824 states and 1456 transitions. [2019-11-24 05:11:40,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:11:40,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-24 05:11:40,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:11:40,708 INFO L225 Difference]: With dead ends: 824 [2019-11-24 05:11:40,709 INFO L226 Difference]: Without dead ends: 502 [2019-11-24 05:11:40,711 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:11:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2019-11-24 05:11:40,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 460. [2019-11-24 05:11:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2019-11-24 05:11:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 824 transitions. [2019-11-24 05:11:40,762 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 824 transitions. Word has length 23 [2019-11-24 05:11:40,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:11:40,762 INFO L462 AbstractCegarLoop]: Abstraction has 460 states and 824 transitions. [2019-11-24 05:11:40,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:11:40,763 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 824 transitions. [2019-11-24 05:11:40,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-24 05:11:40,765 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:11:40,765 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:11:40,766 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:11:40,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:11:40,766 INFO L82 PathProgramCache]: Analyzing trace with hash -110434872, now seen corresponding path program 1 times [2019-11-24 05:11:40,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:11:40,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646710721] [2019-11-24 05:11:40,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:11:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:11:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:11:40,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646710721] [2019-11-24 05:11:40,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675657350] [2019-11-24 05:11:40,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:11:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:11:41,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-24 05:11:41,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:11:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:11:41,398 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:11:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:11:41,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1218038887] [2019-11-24 05:11:41,473 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-11-24 05:11:41,474 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:11:41,479 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:11:41,489 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:11:41,490 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:12:52,974 WARN L192 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 713 [2019-11-24 05:12:57,006 WARN L192 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 306 DAG size of output: 249 [2019-11-24 05:12:57,446 WARN L192 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 751 [2019-11-24 05:12:57,789 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8