/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_spec3_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:59:56,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:59:56,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:59:56,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:59:56,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:59:56,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:59:56,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:59:56,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:59:56,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:59:56,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:59:56,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:59:56,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:59:56,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:59:56,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:59:56,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:59:56,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:59:56,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:59:56,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:59:56,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:59:56,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:59:56,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:59:56,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:59:56,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:59:56,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:59:56,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:59:56,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:59:56,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:59:56,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:59:56,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:59:56,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:59:56,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:59:56,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:59:56,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:59:56,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:59:56,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:59:56,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:59:56,444 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 04:59:56,464 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:59:56,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:59:56,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:59:56,465 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:59:56,466 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:59:56,466 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:59:56,466 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:59:56,466 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:59:56,466 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:59:56,467 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:59:56,467 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:59:56,467 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:59:56,467 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:59:56,468 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:59:56,468 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:59:56,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:59:56,469 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:59:56,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:59:56,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:59:56,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:59:56,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:59:56,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:59:56,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:59:56,470 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:59:56,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:59:56,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:59:56,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:59:56,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:59:56,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:59:56,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:59:56,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:59:56,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:59:56,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:59:56,472 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:59:56,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:59:56,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:59:56,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:59:56,473 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:59:56,766 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:59:56,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:59:56,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:59:56,783 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:59:56,784 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:59:56,785 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product25.cil.c [2019-11-24 04:59:56,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f70c948/bfb0e4c11ec14a6dbdb3f3b4d3639048/FLAG748244c5b [2019-11-24 04:59:57,514 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:59:57,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product25.cil.c [2019-11-24 04:59:57,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f70c948/bfb0e4c11ec14a6dbdb3f3b4d3639048/FLAG748244c5b [2019-11-24 04:59:57,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f70c948/bfb0e4c11ec14a6dbdb3f3b4d3639048 [2019-11-24 04:59:57,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:59:57,706 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:59:57,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:59:57,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:59:57,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:59:57,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:59:57" (1/1) ... [2019-11-24 04:59:57,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f021317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:57, skipping insertion in model container [2019-11-24 04:59:57,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:59:57" (1/1) ... [2019-11-24 04:59:57,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:59:57,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:59:58,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:59:58,527 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:59:58,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:59:58,771 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:59:58,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:58 WrapperNode [2019-11-24 04:59:58,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:59:58,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:59:58,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:59:58,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:59:58,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:58" (1/1) ... [2019-11-24 04:59:58,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:58" (1/1) ... [2019-11-24 04:59:58,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:59:58,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:59:58,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:59:58,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:59:58,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:58" (1/1) ... [2019-11-24 04:59:58,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:58" (1/1) ... [2019-11-24 04:59:58,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:58" (1/1) ... [2019-11-24 04:59:59,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:58" (1/1) ... [2019-11-24 04:59:59,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:58" (1/1) ... [2019-11-24 04:59:59,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:58" (1/1) ... [2019-11-24 04:59:59,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:58" (1/1) ... [2019-11-24 04:59:59,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:59:59,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:59:59,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:59:59,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:59:59,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:58" (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 04:59:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:59:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:59:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:59:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:59:59,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:00:13,759 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:00:13,760 INFO L284 CfgBuilder]: Removed 681 assume(true) statements. [2019-11-24 05:00:13,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:00:13 BoogieIcfgContainer [2019-11-24 05:00:13,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:00:13,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:00:13,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:00:13,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:00:13,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:59:57" (1/3) ... [2019-11-24 05:00:13,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a503856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:00:13, skipping insertion in model container [2019-11-24 05:00:13,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:58" (2/3) ... [2019-11-24 05:00:13,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a503856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:00:13, skipping insertion in model container [2019-11-24 05:00:13,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:00:13" (3/3) ... [2019-11-24 05:00:13,770 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product25.cil.c [2019-11-24 05:00:13,779 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:00:13,785 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2019-11-24 05:00:13,796 INFO L249 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2019-11-24 05:00:13,818 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:00:13,818 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:00:13,819 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:00:13,819 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:00:13,819 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:00:13,819 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:00:13,819 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:00:13,819 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:00:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2019-11-24 05:00:13,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:00:13,846 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:00:13,847 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:00:13,847 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:00:13,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:00:13,854 INFO L82 PathProgramCache]: Analyzing trace with hash 77839213, now seen corresponding path program 1 times [2019-11-24 05:00:13,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:00:13,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077881869] [2019-11-24 05:00:13,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:00:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:00:14,230 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 05:00:14,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077881869] [2019-11-24 05:00:14,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:00:14,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:00:14,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022833861] [2019-11-24 05:00:14,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:00:14,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:00:14,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:00:14,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:00:14,257 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 2 states. [2019-11-24 05:00:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:00:14,298 INFO L93 Difference]: Finished difference Result 136 states and 201 transitions. [2019-11-24 05:00:14,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:00:14,300 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:00:14,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:00:14,318 INFO L225 Difference]: With dead ends: 136 [2019-11-24 05:00:14,318 INFO L226 Difference]: Without dead ends: 77 [2019-11-24 05:00:14,323 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 05:00:14,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-11-24 05:00:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2019-11-24 05:00:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-24 05:00:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 104 transitions. [2019-11-24 05:00:14,392 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 104 transitions. Word has length 8 [2019-11-24 05:00:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:00:14,393 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 104 transitions. [2019-11-24 05:00:14,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:00:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 104 transitions. [2019-11-24 05:00:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:00:14,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:00:14,395 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:00:14,395 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:00:14,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:00:14,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1289250643, now seen corresponding path program 1 times [2019-11-24 05:00:14,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:00:14,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316049641] [2019-11-24 05:00:14,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:00:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:00:14,518 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 05:00:14,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316049641] [2019-11-24 05:00:14,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:00:14,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:00:14,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808452039] [2019-11-24 05:00:14,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:00:14,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:00:14,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:00:14,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:00:14,522 INFO L87 Difference]: Start difference. First operand 77 states and 104 transitions. Second operand 3 states. [2019-11-24 05:00:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:00:14,557 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2019-11-24 05:00:14,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:00:14,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:00:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:00:14,559 INFO L225 Difference]: With dead ends: 130 [2019-11-24 05:00:14,560 INFO L226 Difference]: Without dead ends: 79 [2019-11-24 05:00:14,561 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 05:00:14,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-24 05:00:14,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2019-11-24 05:00:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-24 05:00:14,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 106 transitions. [2019-11-24 05:00:14,571 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 106 transitions. Word has length 9 [2019-11-24 05:00:14,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:00:14,571 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 106 transitions. [2019-11-24 05:00:14,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:00:14,572 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 106 transitions. [2019-11-24 05:00:14,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:00:14,572 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:00:14,573 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:00:14,573 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:00:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:00:14,574 INFO L82 PathProgramCache]: Analyzing trace with hash 2004289409, now seen corresponding path program 1 times [2019-11-24 05:00:14,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:00:14,574 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322186713] [2019-11-24 05:00:14,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:00:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:00:14,827 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 05:00:14,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322186713] [2019-11-24 05:00:14,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:00:14,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:00:14,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193420934] [2019-11-24 05:00:14,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:00:14,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:00:14,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:00:14,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:00:14,831 INFO L87 Difference]: Start difference. First operand 79 states and 106 transitions. Second operand 5 states. [2019-11-24 05:00:15,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:00:15,054 INFO L93 Difference]: Finished difference Result 181 states and 235 transitions. [2019-11-24 05:00:15,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:00:15,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 05:00:15,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:00:15,060 INFO L225 Difference]: With dead ends: 181 [2019-11-24 05:00:15,060 INFO L226 Difference]: Without dead ends: 140 [2019-11-24 05:00:15,061 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 05:00:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-11-24 05:00:15,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 105. [2019-11-24 05:00:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-24 05:00:15,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 155 transitions. [2019-11-24 05:00:15,084 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 155 transitions. Word has length 13 [2019-11-24 05:00:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:00:15,085 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 155 transitions. [2019-11-24 05:00:15,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:00:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 155 transitions. [2019-11-24 05:00:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:00:15,086 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:00:15,086 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:00:15,086 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:00:15,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:00:15,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2006241233, now seen corresponding path program 1 times [2019-11-24 05:00:15,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:00:15,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017105948] [2019-11-24 05:00:15,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:00:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:00:15,414 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 05:00:15,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017105948] [2019-11-24 05:00:15,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636452097] [2019-11-24 05:00:15,415 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 05:00:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:00:15,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:00:15,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:00:15,864 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 05:00:15,865 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:00:15,886 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 05:00:15,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1317012613] [2019-11-24 05:00:15,915 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-24 05:00:15,915 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:00:15,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:00:15,930 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:00:15,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:01:23,834 WARN L192 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 724 [2019-11-24 05:01:28,968 WARN L192 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 341 DAG size of output: 277 [2019-11-24 05:01:29,429 WARN L192 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 771 [2019-11-24 05:01:29,702 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8