/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:13:12,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:13:12,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:13:12,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:13:12,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:13:12,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:13:12,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:13:12,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:13:12,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:13:12,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:13:12,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:13:12,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:13:12,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:13:12,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:13:12,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:13:12,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:13:12,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:13:12,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:13:12,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:13:12,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:13:12,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:13:12,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:13:12,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:13:12,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:13:12,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:13:12,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:13:12,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:13:12,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:13:12,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:13:12,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:13:12,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:13:12,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:13:12,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:13:12,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:13:12,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:13:12,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:13:12,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 05:13:12,505 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:13:12,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:13:12,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:13:12,507 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:13:12,508 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:13:12,508 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:13:12,508 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:13:12,508 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:13:12,508 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:13:12,509 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:13:12,509 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:13:12,509 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:13:12,509 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:13:12,509 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:13:12,510 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:13:12,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:13:12,514 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:13:12,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:13:12,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:13:12,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:13:12,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:13:12,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:13:12,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:13:12,515 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:13:12,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:13:12,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:13:12,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:13:12,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:13:12,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:13:12,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:13:12,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:13:12,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:13:12,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:13:12,518 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:13:12,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:13:12,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:13:12,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:13:12,518 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:13:12,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:13:12,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:13:12,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:13:12,838 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:13:12,838 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:13:12,839 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product35.cil.c [2019-11-24 05:13:12,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67d321a31/5a0706a8d02d4a6c9741d631e868de5b/FLAG5404633f6 [2019-11-24 05:13:13,606 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:13:13,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product35.cil.c [2019-11-24 05:13:13,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67d321a31/5a0706a8d02d4a6c9741d631e868de5b/FLAG5404633f6 [2019-11-24 05:13:13,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67d321a31/5a0706a8d02d4a6c9741d631e868de5b [2019-11-24 05:13:13,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:13:13,779 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:13:13,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:13:13,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:13:13,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:13:13,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:13:13" (1/1) ... [2019-11-24 05:13:13,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d618acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:13, skipping insertion in model container [2019-11-24 05:13:13,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:13:13" (1/1) ... [2019-11-24 05:13:13,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:13:13,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:13:14,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:13:14,645 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:13:14,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:13:14,946 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:13:14,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:14 WrapperNode [2019-11-24 05:13:14,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:13:14,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:13:14,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:13:14,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:13:14,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:14" (1/1) ... [2019-11-24 05:13:15,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:14" (1/1) ... [2019-11-24 05:13:15,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:13:15,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:13:15,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:13:15,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:13:15,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:14" (1/1) ... [2019-11-24 05:13:15,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:14" (1/1) ... [2019-11-24 05:13:15,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:14" (1/1) ... [2019-11-24 05:13:15,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:14" (1/1) ... [2019-11-24 05:13:15,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:14" (1/1) ... [2019-11-24 05:13:15,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:14" (1/1) ... [2019-11-24 05:13:15,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:14" (1/1) ... [2019-11-24 05:13:15,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:13:15,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:13:15,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:13:15,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:13:15,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:13:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:13:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:13:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:13:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:13:15,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:13:40,682 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:13:40,683 INFO L284 CfgBuilder]: Removed 937 assume(true) statements. [2019-11-24 05:13:40,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:13:40 BoogieIcfgContainer [2019-11-24 05:13:40,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:13:40,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:13:40,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:13:40,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:13:40,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:13:13" (1/3) ... [2019-11-24 05:13:40,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b38db96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:13:40, skipping insertion in model container [2019-11-24 05:13:40,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:13:14" (2/3) ... [2019-11-24 05:13:40,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b38db96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:13:40, skipping insertion in model container [2019-11-24 05:13:40,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:13:40" (3/3) ... [2019-11-24 05:13:40,705 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product35.cil.c [2019-11-24 05:13:40,716 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:13:40,725 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:13:40,737 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:13:40,769 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:13:40,769 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:13:40,769 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:13:40,769 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:13:40,770 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:13:40,770 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:13:40,770 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:13:40,770 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:13:40,791 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 05:13:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:13:40,800 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:13:40,801 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:13:40,802 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:13:40,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:13:40,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1296509958, now seen corresponding path program 1 times [2019-11-24 05:13:40,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:13:40,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939731713] [2019-11-24 05:13:40,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:13:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:41,236 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 05:13:41,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939731713] [2019-11-24 05:13:41,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:13:41,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:13:41,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104474777] [2019-11-24 05:13:41,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:13:41,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:13:41,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:13:41,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:13:41,262 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 05:13:41,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:13:41,290 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 05:13:41,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:13:41,292 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:13:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:13:41,306 INFO L225 Difference]: With dead ends: 100 [2019-11-24 05:13:41,306 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:13:41,311 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 05:13:41,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:13:41,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 05:13:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 05:13:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 05:13:41,376 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 05:13:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:13:41,377 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 05:13:41,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:13:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 05:13:41,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:13:41,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:13:41,378 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:13:41,379 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:13:41,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:13:41,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1389848603, now seen corresponding path program 1 times [2019-11-24 05:13:41,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:13:41,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115703354] [2019-11-24 05:13:41,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:13:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:41,596 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 05:13:41,596 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115703354] [2019-11-24 05:13:41,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:13:41,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:13:41,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93255751] [2019-11-24 05:13:41,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:13:41,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:13:41,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:13:41,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:13:41,600 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 05:13:41,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:13:41,634 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 05:13:41,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:13:41,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:13:41,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:13:41,639 INFO L225 Difference]: With dead ends: 94 [2019-11-24 05:13:41,640 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 05:13:41,642 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 05:13:41,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 05:13:41,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 05:13:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 05:13:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 05:13:41,662 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 05:13:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:13:41,663 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 05:13:41,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:13:41,663 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 05:13:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:13:41,665 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:13:41,665 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:13:41,666 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:13:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:13:41,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1279703941, now seen corresponding path program 1 times [2019-11-24 05:13:41,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:13:41,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108226411] [2019-11-24 05:13:41,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:13:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:41,855 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 05:13:41,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108226411] [2019-11-24 05:13:41,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:13:41,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:13:41,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501731611] [2019-11-24 05:13:41,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:13:41,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:13:41,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:13:41,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:13:41,859 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 3 states. [2019-11-24 05:13:42,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:13:42,040 INFO L93 Difference]: Finished difference Result 86 states and 114 transitions. [2019-11-24 05:13:42,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:13:42,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 05:13:42,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:13:42,043 INFO L225 Difference]: With dead ends: 86 [2019-11-24 05:13:42,043 INFO L226 Difference]: Without dead ends: 57 [2019-11-24 05:13:42,045 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:13:42,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-24 05:13:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2019-11-24 05:13:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-24 05:13:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2019-11-24 05:13:42,056 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 13 [2019-11-24 05:13:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:13:42,056 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2019-11-24 05:13:42,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:13:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2019-11-24 05:13:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:13:42,059 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:13:42,059 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:13:42,059 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:13:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:13:42,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1627608804, now seen corresponding path program 1 times [2019-11-24 05:13:42,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:13:42,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801669596] [2019-11-24 05:13:42,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:13:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:42,548 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 05:13:42,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801669596] [2019-11-24 05:13:42,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840361116] [2019-11-24 05:13:42,550 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 05:13:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:43,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:13:43,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:13:43,296 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 05:13:43,297 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:13:43,330 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 05:13:43,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [981158095] [2019-11-24 05:13:43,371 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-11-24 05:13:43,371 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:13:43,379 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:13:43,389 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:13:43,389 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs