/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_spec27_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:56:45,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:56:45,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:56:45,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:56:45,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:56:45,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:56:45,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:56:45,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:56:45,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:56:45,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:56:45,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:56:45,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:56:45,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:56:45,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:56:45,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:56:45,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:56:45,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:56:45,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:56:45,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:56:45,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:56:45,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:56:45,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:56:45,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:56:45,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:56:45,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:56:45,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:56:45,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:56:45,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:56:45,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:56:46,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:56:46,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:56:46,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:56:46,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:56:46,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:56:46,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:56:46,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:56:46,003 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 04:56:46,031 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:56:46,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:56:46,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:56:46,032 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:56:46,033 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:56:46,034 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:56:46,034 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:56:46,034 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:56:46,034 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:56:46,034 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:56:46,035 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:56:46,036 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:56:46,036 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:56:46,036 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:56:46,036 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:56:46,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:56:46,038 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:56:46,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:56:46,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:56:46,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:56:46,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:56:46,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:56:46,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:56:46,039 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:56:46,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:56:46,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:56:46,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:56:46,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:56:46,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:56:46,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:56:46,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:56:46,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:56:46,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:56:46,042 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:56:46,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:56:46,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:56:46,043 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:56:46,043 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:56:46,321 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:56:46,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:56:46,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:56:46,342 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:56:46,342 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:56:46,343 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c [2019-11-24 04:56:46,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c00aa583/65337110315240b886a63aeeae0e1c9d/FLAGaddc815eb [2019-11-24 04:56:47,039 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:56:47,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c [2019-11-24 04:56:47,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c00aa583/65337110315240b886a63aeeae0e1c9d/FLAGaddc815eb [2019-11-24 04:56:47,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c00aa583/65337110315240b886a63aeeae0e1c9d [2019-11-24 04:56:47,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:56:47,234 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:56:47,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:56:47,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:56:47,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:56:47,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:56:47" (1/1) ... [2019-11-24 04:56:47,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bfee95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:47, skipping insertion in model container [2019-11-24 04:56:47,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:56:47" (1/1) ... [2019-11-24 04:56:47,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:56:47,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:56:48,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:56:48,205 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:56:48,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:56:48,494 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:56:48,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:48 WrapperNode [2019-11-24 04:56:48,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:56:48,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:56:48,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:56:48,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:56:48,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:48" (1/1) ... [2019-11-24 04:56:48,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:48" (1/1) ... [2019-11-24 04:56:48,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:56:48,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:56:48,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:56:48,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:56:48,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:48" (1/1) ... [2019-11-24 04:56:48,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:48" (1/1) ... [2019-11-24 04:56:48,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:48" (1/1) ... [2019-11-24 04:56:48,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:48" (1/1) ... [2019-11-24 04:56:48,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:48" (1/1) ... [2019-11-24 04:56:48,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:48" (1/1) ... [2019-11-24 04:56:48,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:48" (1/1) ... [2019-11-24 04:56:48,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:56:48,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:56:48,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:56:48,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:56:48,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:48" (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 04:56:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:56:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:56:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:56:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:56:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:57:06,623 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:57:06,623 INFO L284 CfgBuilder]: Removed 709 assume(true) statements. [2019-11-24 04:57:06,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:57:06 BoogieIcfgContainer [2019-11-24 04:57:06,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:57:06,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:57:06,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:57:06,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:57:06,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:56:47" (1/3) ... [2019-11-24 04:57:06,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f332bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:57:06, skipping insertion in model container [2019-11-24 04:57:06,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:48" (2/3) ... [2019-11-24 04:57:06,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f332bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:57:06, skipping insertion in model container [2019-11-24 04:57:06,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:57:06" (3/3) ... [2019-11-24 04:57:06,645 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product27.cil.c [2019-11-24 04:57:06,660 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:57:06,672 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 04:57:06,691 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 04:57:06,726 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:57:06,726 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:57:06,727 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:57:06,727 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:57:06,727 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:57:06,727 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:57:06,728 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:57:06,728 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:57:06,752 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 04:57:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:57:06,761 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:57:06,763 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:57:06,764 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 04:57:06,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:57:06,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1310458956, now seen corresponding path program 1 times [2019-11-24 04:57:06,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:57:06,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609177428] [2019-11-24 04:57:06,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:57:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:57:07,335 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 04:57:07,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609177428] [2019-11-24 04:57:07,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:57:07,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:57:07,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960023010] [2019-11-24 04:57:07,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:57:07,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:57:07,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:57:07,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:57:07,373 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 04:57:07,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:57:07,418 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 04:57:07,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:57:07,420 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 04:57:07,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:57:07,438 INFO L225 Difference]: With dead ends: 100 [2019-11-24 04:57:07,439 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 04:57:07,446 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 04:57:07,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 04:57:07,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 04:57:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 04:57:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 04:57:07,535 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 04:57:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:57:07,536 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 04:57:07,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:57:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 04:57:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:57:07,539 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:57:07,539 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:57:07,540 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 04:57:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:57:07,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1867851440, now seen corresponding path program 1 times [2019-11-24 04:57:07,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:57:07,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448417255] [2019-11-24 04:57:07,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:57:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:57:07,805 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 04:57:07,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448417255] [2019-11-24 04:57:07,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:57:07,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:57:07,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183104021] [2019-11-24 04:57:07,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:57:07,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:57:07,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:57:07,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:57:07,810 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 04:57:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:57:07,832 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 04:57:07,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:57:07,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 04:57:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:57:07,835 INFO L225 Difference]: With dead ends: 94 [2019-11-24 04:57:07,836 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 04:57:07,837 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 04:57:07,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 04:57:07,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 04:57:07,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 04:57:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 04:57:07,848 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 04:57:07,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:57:07,849 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 04:57:07,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:57:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 04:57:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:57:07,850 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:57:07,851 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:57:07,851 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 04:57:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:57:07,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1081663193, now seen corresponding path program 1 times [2019-11-24 04:57:07,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:57:07,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111502485] [2019-11-24 04:57:07,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:57:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:57:08,624 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 04:57:08,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111502485] [2019-11-24 04:57:08,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703498116] [2019-11-24 04:57:08,625 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 04:57:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:57:09,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:57:09,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:57:09,360 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 04:57:09,361 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:57:09,400 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 04:57:09,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1166339347] [2019-11-24 04:57:09,451 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-24 04:57:09,453 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:57:09,459 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:57:09,469 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:57:09,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:58:08,082 WARN L192 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 699 [2019-11-24 04:58:12,102 WARN L192 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 309 DAG size of output: 251 [2019-11-24 04:58:12,531 WARN L192 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 740 [2019-11-24 04:58:12,930 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8