/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_spec1_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:53:28,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:53:28,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:53:28,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:53:28,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:53:28,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:53:28,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:53:28,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:53:28,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:53:28,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:53:28,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:53:28,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:53:28,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:53:28,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:53:28,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:53:28,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:53:28,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:53:28,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:53:28,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:53:28,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:53:28,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:53:28,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:53:28,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:53:28,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:53:28,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:53:28,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:53:28,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:53:28,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:53:28,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:53:28,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:53:28,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:53:28,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:53:28,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:53:28,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:53:28,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:53:28,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:53:28,562 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 04:53:28,583 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:53:28,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:53:28,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:53:28,584 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:53:28,585 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:53:28,585 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:53:28,585 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:53:28,586 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:53:28,586 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:53:28,586 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:53:28,587 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:53:28,587 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:53:28,588 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:53:28,588 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:53:28,588 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:53:28,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:53:28,590 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:53:28,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:53:28,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:53:28,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:53:28,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:53:28,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:53:28,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:53:28,591 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:53:28,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:53:28,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:53:28,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:53:28,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:53:28,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:53:28,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:53:28,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:53:28,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:53:28,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:53:28,594 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:53:28,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:53:28,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:53:28,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:53:28,595 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:53:28,871 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:53:28,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:53:28,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:53:28,889 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:53:28,889 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:53:28,890 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product20.cil.c [2019-11-24 04:53:28,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cccf54571/d5d8b91ee25643a5ab81d6eda1e2bdf9/FLAGa45f80624 [2019-11-24 04:53:29,557 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:53:29,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product20.cil.c [2019-11-24 04:53:29,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cccf54571/d5d8b91ee25643a5ab81d6eda1e2bdf9/FLAGa45f80624 [2019-11-24 04:53:29,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cccf54571/d5d8b91ee25643a5ab81d6eda1e2bdf9 [2019-11-24 04:53:29,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:53:29,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:53:29,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:53:29,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:53:29,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:53:29,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:53:29" (1/1) ... [2019-11-24 04:53:29,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3912d698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:29, skipping insertion in model container [2019-11-24 04:53:29,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:53:29" (1/1) ... [2019-11-24 04:53:29,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:53:29,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:53:30,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:53:30,742 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:53:30,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:53:30,995 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:53:30,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:30 WrapperNode [2019-11-24 04:53:30,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:53:30,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:53:30,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:53:30,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:53:31,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:30" (1/1) ... [2019-11-24 04:53:31,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:30" (1/1) ... [2019-11-24 04:53:31,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:53:31,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:53:31,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:53:31,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:53:31,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:30" (1/1) ... [2019-11-24 04:53:31,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:30" (1/1) ... [2019-11-24 04:53:31,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:30" (1/1) ... [2019-11-24 04:53:31,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:30" (1/1) ... [2019-11-24 04:53:31,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:30" (1/1) ... [2019-11-24 04:53:31,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:30" (1/1) ... [2019-11-24 04:53:31,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:30" (1/1) ... [2019-11-24 04:53:31,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:53:31,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:53:31,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:53:31,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:53:31,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:30" (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 04:53:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:53:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:53:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:53:31,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:53:31,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:53:42,818 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:53:42,818 INFO L284 CfgBuilder]: Removed 529 assume(true) statements. [2019-11-24 04:53:42,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:53:42 BoogieIcfgContainer [2019-11-24 04:53:42,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:53:42,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:53:42,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:53:42,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:53:42,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:53:29" (1/3) ... [2019-11-24 04:53:42,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4e1b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:53:42, skipping insertion in model container [2019-11-24 04:53:42,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:30" (2/3) ... [2019-11-24 04:53:42,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4e1b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:53:42, skipping insertion in model container [2019-11-24 04:53:42,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:53:42" (3/3) ... [2019-11-24 04:53:42,827 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec1_product20.cil.c [2019-11-24 04:53:42,834 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:53:42,841 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 04:53:42,852 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 04:53:42,878 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:53:42,878 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:53:42,878 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:53:42,878 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:53:42,878 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:53:42,878 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:53:42,879 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:53:42,879 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:53:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 04:53:42,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:53:42,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:42,905 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:53:42,905 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 04:53:42,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:42,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1489566180, now seen corresponding path program 1 times [2019-11-24 04:53:42,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:42,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752886806] [2019-11-24 04:53:42,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:43,275 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 04:53:43,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752886806] [2019-11-24 04:53:43,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:53:43,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:53:43,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194651992] [2019-11-24 04:53:43,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:53:43,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:53:43,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:53:43,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:53:43,300 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 04:53:43,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:53:43,329 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 04:53:43,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:53:43,330 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 04:53:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:53:43,342 INFO L225 Difference]: With dead ends: 100 [2019-11-24 04:53:43,342 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 04:53:43,345 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 04:53:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 04:53:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 04:53:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 04:53:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 04:53:43,383 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 04:53:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:53:43,383 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 04:53:43,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:53:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 04:53:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:53:43,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:43,385 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:53:43,385 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 04:53:43,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:43,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1034827397, now seen corresponding path program 1 times [2019-11-24 04:53:43,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:43,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739995830] [2019-11-24 04:53:43,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:43,508 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 04:53:43,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739995830] [2019-11-24 04:53:43,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:53:43,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:53:43,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513672165] [2019-11-24 04:53:43,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:53:43,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:53:43,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:53:43,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:53:43,513 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 04:53:43,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:53:43,538 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 04:53:43,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:53:43,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 04:53:43,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:53:43,542 INFO L225 Difference]: With dead ends: 94 [2019-11-24 04:53:43,542 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 04:53:43,544 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 04:53:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 04:53:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 04:53:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 04:53:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 04:53:43,565 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 04:53:43,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:53:43,567 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 04:53:43,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:53:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 04:53:43,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:53:43,568 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:43,568 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:53:43,568 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 04:53:43,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:43,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1291665663, now seen corresponding path program 1 times [2019-11-24 04:53:43,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:43,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935591242] [2019-11-24 04:53:43,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:43,724 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 04:53:43,724 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935591242] [2019-11-24 04:53:43,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:53:43,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:53:43,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166026705] [2019-11-24 04:53:43,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:53:43,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:53:43,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:53:43,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:53:43,728 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 3 states. [2019-11-24 04:53:43,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:53:43,791 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2019-11-24 04:53:43,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:53:43,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 04:53:43,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:53:43,793 INFO L225 Difference]: With dead ends: 84 [2019-11-24 04:53:43,793 INFO L226 Difference]: Without dead ends: 55 [2019-11-24 04:53:43,795 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 04:53:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-24 04:53:43,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-24 04:53:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-24 04:53:43,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2019-11-24 04:53:43,807 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 13 [2019-11-24 04:53:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:53:43,808 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2019-11-24 04:53:43,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:53:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2019-11-24 04:53:43,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 04:53:43,809 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:43,810 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:53:43,810 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 04:53:43,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:43,811 INFO L82 PathProgramCache]: Analyzing trace with hash -21309687, now seen corresponding path program 1 times [2019-11-24 04:53:43,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:43,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66561632] [2019-11-24 04:53:43,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:44,045 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 04:53:44,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66561632] [2019-11-24 04:53:44,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:53:44,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:53:44,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997226284] [2019-11-24 04:53:44,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:53:44,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:53:44,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:53:44,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:53:44,051 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand 5 states. [2019-11-24 04:53:44,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:53:44,376 INFO L93 Difference]: Finished difference Result 124 states and 174 transitions. [2019-11-24 04:53:44,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:53:44,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-24 04:53:44,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:53:44,378 INFO L225 Difference]: With dead ends: 124 [2019-11-24 04:53:44,378 INFO L226 Difference]: Without dead ends: 101 [2019-11-24 04:53:44,379 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 04:53:44,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-24 04:53:44,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2019-11-24 04:53:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-24 04:53:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 129 transitions. [2019-11-24 04:53:44,390 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 129 transitions. Word has length 15 [2019-11-24 04:53:44,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:53:44,391 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 129 transitions. [2019-11-24 04:53:44,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:53:44,391 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 129 transitions. [2019-11-24 04:53:44,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 04:53:44,392 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:44,392 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 04:53:44,392 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 04:53:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:44,393 INFO L82 PathProgramCache]: Analyzing trace with hash -935053158, now seen corresponding path program 1 times [2019-11-24 04:53:44,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:44,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461948748] [2019-11-24 04:53:44,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:44,597 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 04:53:44,598 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461948748] [2019-11-24 04:53:44,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:53:44,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-24 04:53:44,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527049170] [2019-11-24 04:53:44,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-24 04:53:44,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:53:44,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-24 04:53:44,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-24 04:53:44,600 INFO L87 Difference]: Start difference. First operand 81 states and 129 transitions. Second operand 8 states. [2019-11-24 04:53:45,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:53:45,186 INFO L93 Difference]: Finished difference Result 153 states and 248 transitions. [2019-11-24 04:53:45,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 04:53:45,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-24 04:53:45,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:53:45,191 INFO L225 Difference]: With dead ends: 153 [2019-11-24 04:53:45,192 INFO L226 Difference]: Without dead ends: 133 [2019-11-24 04:53:45,193 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2019-11-24 04:53:45,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2019-11-24 04:53:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2019-11-24 04:53:45,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-11-24 04:53:45,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 220 transitions. [2019-11-24 04:53:45,210 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 220 transitions. Word has length 18 [2019-11-24 04:53:45,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:53:45,211 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 220 transitions. [2019-11-24 04:53:45,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-24 04:53:45,211 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 220 transitions. [2019-11-24 04:53:45,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 04:53:45,212 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:45,212 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 04:53:45,213 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 04:53:45,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:45,213 INFO L82 PathProgramCache]: Analyzing trace with hash -578678186, now seen corresponding path program 1 times [2019-11-24 04:53:45,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:45,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659650960] [2019-11-24 04:53:45,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:45,270 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 04:53:45,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659650960] [2019-11-24 04:53:45,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:53:45,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:53:45,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883036347] [2019-11-24 04:53:45,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:53:45,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:53:45,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:53:45,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:53:45,272 INFO L87 Difference]: Start difference. First operand 129 states and 220 transitions. Second operand 3 states. [2019-11-24 04:53:45,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:53:45,304 INFO L93 Difference]: Finished difference Result 379 states and 648 transitions. [2019-11-24 04:53:45,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:53:45,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-24 04:53:45,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:53:45,307 INFO L225 Difference]: With dead ends: 379 [2019-11-24 04:53:45,307 INFO L226 Difference]: Without dead ends: 252 [2019-11-24 04:53:45,308 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 04:53:45,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2019-11-24 04:53:45,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 221. [2019-11-24 04:53:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-11-24 04:53:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 393 transitions. [2019-11-24 04:53:45,334 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 393 transitions. Word has length 19 [2019-11-24 04:53:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:53:45,335 INFO L462 AbstractCegarLoop]: Abstraction has 221 states and 393 transitions. [2019-11-24 04:53:45,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:53:45,335 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 393 transitions. [2019-11-24 04:53:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-24 04:53:45,336 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:45,337 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 04:53:45,337 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 04:53:45,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:45,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1098583935, now seen corresponding path program 1 times [2019-11-24 04:53:45,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:45,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226479040] [2019-11-24 04:53:45,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:45,577 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 04:53:45,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226479040] [2019-11-24 04:53:45,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:53:45,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-24 04:53:45,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849036017] [2019-11-24 04:53:45,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-24 04:53:45,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:53:45,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-24 04:53:45,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-24 04:53:45,579 INFO L87 Difference]: Start difference. First operand 221 states and 393 transitions. Second operand 9 states. [2019-11-24 04:53:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:53:46,419 INFO L93 Difference]: Finished difference Result 343 states and 604 transitions. [2019-11-24 04:53:46,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-24 04:53:46,420 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-11-24 04:53:46,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:53:46,423 INFO L225 Difference]: With dead ends: 343 [2019-11-24 04:53:46,424 INFO L226 Difference]: Without dead ends: 334 [2019-11-24 04:53:46,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-11-24 04:53:46,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2019-11-24 04:53:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 226. [2019-11-24 04:53:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2019-11-24 04:53:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 398 transitions. [2019-11-24 04:53:46,481 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 398 transitions. Word has length 20 [2019-11-24 04:53:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:53:46,481 INFO L462 AbstractCegarLoop]: Abstraction has 226 states and 398 transitions. [2019-11-24 04:53:46,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-24 04:53:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 398 transitions. [2019-11-24 04:53:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-24 04:53:46,483 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:46,484 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 04:53:46,484 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 04:53:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:46,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1099116817, now seen corresponding path program 1 times [2019-11-24 04:53:46,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:46,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471440929] [2019-11-24 04:53:46,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:53:46,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471440929] [2019-11-24 04:53:46,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613963651] [2019-11-24 04:53:46,711 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 04:53:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:47,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:53:47,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:53:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:53:47,200 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:53:47,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:53:47,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1094944865] [2019-11-24 04:53:47,254 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-11-24 04:53:47,254 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:53:47,266 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:53:47,273 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:53:47,274 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:54:31,054 WARN L192 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 680 [2019-11-24 04:54:34,589 WARN L192 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 279 DAG size of output: 227 [2019-11-24 04:54:35,078 WARN L192 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 715 [2019-11-24 04:54:37,451 WARN L192 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 1089 [2019-11-24 04:54:38,657 WARN L192 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 1089 [2019-11-24 04:54:39,807 WARN L192 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 1089 [2019-11-24 04:54:40,914 WARN L192 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 1089 [2019-11-24 04:54:42,536 WARN L192 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 1089 [2019-11-24 04:54:43,608 WARN L192 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 1089 [2019-11-24 04:54:44,718 WARN L192 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 1089 [2019-11-24 04:54:45,802 WARN L192 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 1089 [2019-11-24 04:54:46,845 WARN L192 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 1089 [2019-11-24 04:54:48,366 WARN L192 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 1096 [2019-11-24 04:54:49,716 WARN L192 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 1096 [2019-11-24 04:54:51,100 WARN L192 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 1096 [2019-11-24 04:54:52,428 WARN L192 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 1096 [2019-11-24 04:54:53,752 WARN L192 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 1096 [2019-11-24 04:54:55,110 WARN L192 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 1096 [2019-11-24 04:54:55,192 INFO L180 IcfgInterpreter]: Interpretation finished