/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-examples/standard_seq_init_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:14:12,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:14:12,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:14:12,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:14:12,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:14:12,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:14:12,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:14:12,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:14:12,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:14:12,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:14:12,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:14:12,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:14:12,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:14:12,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:14:12,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:14:12,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:14:12,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:14:12,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:14:12,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:14:12,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:14:12,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:14:12,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:14:12,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:14:12,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:14:12,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 23:14:12,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 23:14:12,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 23:14:12,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 23:14:12,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 23:14:12,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 23:14:12,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 23:14:12,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 23:14:12,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 23:14:12,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 23:14:12,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 23:14:12,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 23:14:12,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 23:14:12,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 23:14:12,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:14:12,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:14:12,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:14:12,738 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 23:14:12,752 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:14:12,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:14:12,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:14:12,753 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:14:12,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:14:12,754 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:14:12,754 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:14:12,754 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:14:12,754 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:14:12,754 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:14:12,755 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:14:12,755 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:14:12,755 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:14:12,755 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:14:12,755 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:14:12,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:14:12,756 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:14:12,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:14:12,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:14:12,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:14:12,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:14:12,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:14:12,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:14:12,757 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:14:12,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:14:12,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:14:12,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:14:12,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:14:12,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:14:12,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:14:12,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:14:12,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:14:12,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:14:12,759 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:14:12,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:14:12,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:14:12,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:14:12,760 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:14:13,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:14:13,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:14:13,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:14:13,109 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:14:13,110 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:14:13,110 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_seq_init_ground.i [2019-11-23 23:14:13,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2038fe7/4ba30e6358a249f78cac573f46475e06/FLAG9a7f53482 [2019-11-23 23:14:13,630 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:14:13,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_seq_init_ground.i [2019-11-23 23:14:13,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2038fe7/4ba30e6358a249f78cac573f46475e06/FLAG9a7f53482 [2019-11-23 23:14:14,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2038fe7/4ba30e6358a249f78cac573f46475e06 [2019-11-23 23:14:14,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:14:14,025 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:14:14,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:14:14,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:14:14,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:14:14,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:14:14" (1/1) ... [2019-11-23 23:14:14,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b68018e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14, skipping insertion in model container [2019-11-23 23:14:14,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:14:14" (1/1) ... [2019-11-23 23:14:14,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:14:14,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:14:14,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:14:14,235 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:14:14,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:14:14,278 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:14:14,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14 WrapperNode [2019-11-23 23:14:14,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:14:14,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:14:14,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:14:14,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:14:14,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14" (1/1) ... [2019-11-23 23:14:14,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14" (1/1) ... [2019-11-23 23:14:14,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:14:14,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:14:14,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:14:14,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:14:14,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14" (1/1) ... [2019-11-23 23:14:14,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14" (1/1) ... [2019-11-23 23:14:14,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14" (1/1) ... [2019-11-23 23:14:14,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14" (1/1) ... [2019-11-23 23:14:14,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14" (1/1) ... [2019-11-23 23:14:14,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14" (1/1) ... [2019-11-23 23:14:14,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14" (1/1) ... [2019-11-23 23:14:14,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:14:14,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:14:14,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:14:14,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:14:14,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14" (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 [2019-11-23 23:14:14,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:14:14,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:14:14,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:14:14,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:14:14,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:14:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:14:14,794 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:14:14,794 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-23 23:14:14,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:14:14 BoogieIcfgContainer [2019-11-23 23:14:14,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:14:14,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:14:14,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:14:14,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:14:14,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:14:14" (1/3) ... [2019-11-23 23:14:14,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:14:14, skipping insertion in model container [2019-11-23 23:14:14,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:14:14" (2/3) ... [2019-11-23 23:14:14,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:14:14, skipping insertion in model container [2019-11-23 23:14:14,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:14:14" (3/3) ... [2019-11-23 23:14:14,804 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_seq_init_ground.i [2019-11-23 23:14:14,814 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:14:14,821 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:14:14,833 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:14:14,854 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:14:14,854 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:14:14,855 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:14:14,855 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:14:14,855 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:14:14,855 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:14:14,855 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:14:14,855 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:14:14,868 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-23 23:14:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-23 23:14:14,874 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:14:14,875 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-23 23:14:14,875 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:14:14,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:14:14,880 INFO L82 PathProgramCache]: Analyzing trace with hash 69853041, now seen corresponding path program 1 times [2019-11-23 23:14:14,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:14:14,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363454023] [2019-11-23 23:14:14,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:14:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:14:15,027 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 23:14:15,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363454023] [2019-11-23 23:14:15,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:14:15,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:14:15,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970885028] [2019-11-23 23:14:15,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:14:15,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:14:15,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:14:15,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:14:15,048 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-11-23 23:14:15,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:14:15,073 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2019-11-23 23:14:15,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:14:15,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-23 23:14:15,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:14:15,083 INFO L225 Difference]: With dead ends: 15 [2019-11-23 23:14:15,083 INFO L226 Difference]: Without dead ends: 8 [2019-11-23 23:14:15,086 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 [2019-11-23 23:14:15,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-23 23:14:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-23 23:14:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-23 23:14:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-23 23:14:15,114 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-23 23:14:15,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:14:15,115 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-23 23:14:15,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:14:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-23 23:14:15,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 23:14:15,115 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:14:15,116 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 23:14:15,116 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:14:15,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:14:15,116 INFO L82 PathProgramCache]: Analyzing trace with hash 2130228392, now seen corresponding path program 1 times [2019-11-23 23:14:15,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:14:15,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459895892] [2019-11-23 23:14:15,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:14:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:14:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:14:15,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459895892] [2019-11-23 23:14:15,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285192249] [2019-11-23 23:14:15,177 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 23:14:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:14:15,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:14:15,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:14:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:14:15,241 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:14:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:14:15,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [557765138] [2019-11-23 23:14:15,301 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-11-23 23:14:15,301 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:14:15,321 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:14:15,331 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:14:15,332 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:15:03,373 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2019-11-23 23:15:05,314 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2019-11-23 23:15:09,905 WARN L192 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2019-11-23 23:15:10,041 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2019-11-23 23:15:16,555 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 291 [2019-11-23 23:15:19,268 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2019-11-23 23:15:19,416 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2019-11-23 23:15:19,529 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 292 [2019-11-23 23:15:19,670 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2019-11-23 23:15:22,250 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2019-11-23 23:15:24,735 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 309 [2019-11-23 23:15:27,298 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2019-11-23 23:15:29,866 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-11-23 23:15:32,530 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2019-11-23 23:15:35,268 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2019-11-23 23:15:37,951 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-23 23:15:40,712 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2019-11-23 23:15:43,531 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2019-11-23 23:15:46,382 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 337