/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/array-tiling/skipped.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:29:02,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:29:02,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:29:02,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:29:02,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:29:02,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:29:02,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:29:02,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:29:02,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:29:02,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:29:02,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:29:02,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:29:02,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:29:02,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:29:02,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:29:02,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:29:02,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:29:02,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:29:02,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:29:02,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:29:02,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:29:02,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:29:02,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:29:02,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:29:02,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 23:29:02,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 23:29:02,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 23:29:02,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 23:29:02,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 23:29:02,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 23:29:02,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 23:29:02,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 23:29:02,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 23:29:02,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 23:29:02,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 23:29:02,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 23:29:02,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 23:29:02,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 23:29:02,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:29:02,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:29:02,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:29:02,787 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 [2019-11-23 23:29:02,801 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:29:02,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:29:02,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:29:02,803 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:29:02,803 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:29:02,803 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:29:02,803 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:29:02,803 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:29:02,804 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:29:02,804 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:29:02,804 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:29:02,804 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:29:02,804 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:29:02,805 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:29:02,805 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:29:02,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:29:02,806 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:29:02,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:29:02,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:29:02,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:29:02,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:29:02,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:29:02,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:29:02,807 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:29:02,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:29:02,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:29:02,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:29:02,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:29:02,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:29:02,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:29:02,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:29:02,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:29:02,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:29:02,809 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:29:02,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:29:02,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:29:02,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:29:02,810 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:29:03,112 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:29:03,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:29:03,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:29:03,139 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:29:03,140 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:29:03,141 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skipped.c [2019-11-23 23:29:03,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc19c78a/5f1fa7f4a96245fe9ab2336f7f7b9992/FLAG99f78e608 [2019-11-23 23:29:03,693 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:29:03,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skipped.c [2019-11-23 23:29:03,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc19c78a/5f1fa7f4a96245fe9ab2336f7f7b9992/FLAG99f78e608 [2019-11-23 23:29:04,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc19c78a/5f1fa7f4a96245fe9ab2336f7f7b9992 [2019-11-23 23:29:04,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:29:04,039 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:29:04,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:29:04,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:29:04,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:29:04,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:29:04" (1/1) ... [2019-11-23 23:29:04,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba61e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04, skipping insertion in model container [2019-11-23 23:29:04,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:29:04" (1/1) ... [2019-11-23 23:29:04,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:29:04,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:29:04,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:29:04,277 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:29:04,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:29:04,313 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:29:04,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04 WrapperNode [2019-11-23 23:29:04,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:29:04,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:29:04,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:29:04,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:29:04,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04" (1/1) ... [2019-11-23 23:29:04,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04" (1/1) ... [2019-11-23 23:29:04,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:29:04,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:29:04,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:29:04,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:29:04,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04" (1/1) ... [2019-11-23 23:29:04,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04" (1/1) ... [2019-11-23 23:29:04,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04" (1/1) ... [2019-11-23 23:29:04,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04" (1/1) ... [2019-11-23 23:29:04,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04" (1/1) ... [2019-11-23 23:29:04,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04" (1/1) ... [2019-11-23 23:29:04,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04" (1/1) ... [2019-11-23 23:29:04,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:29:04,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:29:04,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:29:04,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:29:04,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04" (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 [2019-11-23 23:29:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:29:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-23 23:29:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:29:04,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:29:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:29:05,008 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:29:05,008 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 23:29:05,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:29:05 BoogieIcfgContainer [2019-11-23 23:29:05,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:29:05,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:29:05,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:29:05,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:29:05,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:29:04" (1/3) ... [2019-11-23 23:29:05,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756b9d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:29:05, skipping insertion in model container [2019-11-23 23:29:05,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:29:04" (2/3) ... [2019-11-23 23:29:05,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756b9d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:29:05, skipping insertion in model container [2019-11-23 23:29:05,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:29:05" (3/3) ... [2019-11-23 23:29:05,018 INFO L109 eAbstractionObserver]: Analyzing ICFG skipped.c [2019-11-23 23:29:05,028 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:29:05,036 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:29:05,047 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:29:05,066 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:29:05,066 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:29:05,067 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:29:05,067 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:29:05,067 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:29:05,067 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:29:05,067 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:29:05,068 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:29:05,079 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-23 23:29:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 23:29:05,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:29:05,086 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:29:05,086 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:29:05,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:29:05,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1545110184, now seen corresponding path program 1 times [2019-11-23 23:29:05,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:29:05,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688543010] [2019-11-23 23:29:05,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:29:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:29:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:29:05,283 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688543010] [2019-11-23 23:29:05,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:29:05,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:29:05,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578871990] [2019-11-23 23:29:05,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:29:05,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:29:05,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:29:05,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:29:05,312 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2019-11-23 23:29:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:29:05,379 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2019-11-23 23:29:05,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:29:05,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-23 23:29:05,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:29:05,394 INFO L225 Difference]: With dead ends: 24 [2019-11-23 23:29:05,394 INFO L226 Difference]: Without dead ends: 11 [2019-11-23 23:29:05,398 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 [2019-11-23 23:29:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-23 23:29:05,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-23 23:29:05,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-23 23:29:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-23 23:29:05,438 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2019-11-23 23:29:05,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:29:05,438 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-23 23:29:05,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:29:05,439 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-23 23:29:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 23:29:05,441 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:29:05,441 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:29:05,442 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:29:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:29:05,442 INFO L82 PathProgramCache]: Analyzing trace with hash -745087746, now seen corresponding path program 1 times [2019-11-23 23:29:05,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:29:05,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489491475] [2019-11-23 23:29:05,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:29:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:29:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:29:05,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489491475] [2019-11-23 23:29:05,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:29:05,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 23:29:05,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494412021] [2019-11-23 23:29:05,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:29:05,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:29:05,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:29:05,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:29:05,579 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 4 states. [2019-11-23 23:29:05,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:29:05,638 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2019-11-23 23:29:05,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:29:05,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-23 23:29:05,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:29:05,640 INFO L225 Difference]: With dead ends: 17 [2019-11-23 23:29:05,640 INFO L226 Difference]: Without dead ends: 12 [2019-11-23 23:29:05,641 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:29:05,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-23 23:29:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-23 23:29:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-23 23:29:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-23 23:29:05,648 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2019-11-23 23:29:05,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:29:05,649 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-23 23:29:05,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:29:05,650 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-23 23:29:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 23:29:05,651 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:29:05,651 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:29:05,652 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:29:05,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:29:05,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1623690886, now seen corresponding path program 1 times [2019-11-23 23:29:05,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:29:05,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566740577] [2019-11-23 23:29:05,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:29:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:29:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:29:05,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566740577] [2019-11-23 23:29:05,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006067068] [2019-11-23 23:29:05,731 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 [2019-11-23 23:29:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:29:05,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 23:29:05,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:29:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:29:05,847 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:29:05,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:29:05,875 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [453987887] [2019-11-23 23:29:05,901 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-23 23:29:05,902 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:29:05,909 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:29:05,916 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:29:05,917 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:29:07,922 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 135 [2019-11-23 23:29:08,074 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-11-23 23:29:08,183 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 140 [2019-11-23 23:29:08,992 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 145 [2019-11-23 23:29:16,263 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2019-11-23 23:29:16,444 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2019-11-23 23:29:17,563 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2019-11-23 23:29:18,966 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 195 [2019-11-23 23:29:37,308 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 255 [2019-11-23 23:29:38,926 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 257 [2019-11-23 23:29:40,772 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 268 [2019-11-23 23:29:40,889 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 262 [2019-11-23 23:29:41,101 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 262 [2019-11-23 23:29:43,298 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 269 [2019-11-23 23:29:45,161 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 272 [2019-11-23 23:29:47,121 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 273 [2019-11-23 23:29:47,252 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2019-11-23 23:29:49,591 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2019-11-23 23:29:49,768 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 279 [2019-11-23 23:29:53,670 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 289 [2019-11-23 23:29:53,789 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 287 [2019-11-23 23:29:55,772 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 294 [2019-11-23 23:29:55,904 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 290 [2019-11-23 23:29:57,917 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 293 [2019-11-23 23:29:58,059 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 294 [2019-11-23 23:30:00,235 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-11-23 23:30:00,354 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 297 [2019-11-23 23:30:02,363 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 300 [2019-11-23 23:30:02,476 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 300 [2019-11-23 23:30:04,636 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-11-23 23:30:04,758 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 305 [2019-11-23 23:30:06,881 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2019-11-23 23:30:07,017 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 306 [2019-11-23 23:30:09,334 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 312 [2019-11-23 23:30:09,467 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 309 [2019-11-23 23:30:09,693 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 311 [2019-11-23 23:30:12,024 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 319 [2019-11-23 23:30:12,175 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 315 [2019-11-23 23:30:14,579 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 320 [2019-11-23 23:30:14,722 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 319 [2019-11-23 23:30:17,098 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2019-11-23 23:30:17,252 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 323 [2019-11-23 23:30:19,671 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 328 [2019-11-23 23:30:19,827 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 325 [2019-11-23 23:30:19,965 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2019-11-23 23:30:20,086 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 328 [2019-11-23 23:30:23,058 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2019-11-23 23:30:23,184 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 333 [2019-11-23 23:30:25,596 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 337 [2019-11-23 23:30:25,736 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 337 [2019-11-23 23:30:29,005 WARN L192 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2019-11-23 23:30:29,247 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 340 [2019-11-23 23:30:31,931 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 346 [2019-11-23 23:30:32,079 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 344