/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_copy1_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:02:58,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:02:58,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:02:58,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:02:58,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:02:58,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:02:58,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:02:58,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:02:58,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:02:58,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:02:58,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:02:58,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:02:58,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:02:58,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:02:58,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:02:58,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:02:58,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:02:58,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:02:58,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:02:58,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:02:58,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:02:58,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:02:58,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:02:58,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:02:58,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 23:02:58,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 23:02:58,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 23:02:58,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 23:02:58,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 23:02:58,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 23:02:58,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 23:02:58,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 23:02:58,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 23:02:58,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 23:02:58,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 23:02:58,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 23:02:58,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 23:02:58,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 23:02:58,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:02:58,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:02:58,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:02:58,481 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 23:02:58,500 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:02:58,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:02:58,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:02:58,501 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:02:58,502 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:02:58,502 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:02:58,502 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:02:58,502 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:02:58,502 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:02:58,503 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:02:58,503 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:02:58,503 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:02:58,503 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:02:58,504 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:02:58,504 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:02:58,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:02:58,505 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:02:58,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:02:58,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:02:58,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:02:58,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:02:58,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:02:58,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:02:58,506 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:02:58,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:02:58,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:02:58,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:02:58,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:02:58,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:02:58,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:02:58,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:02:58,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:02:58,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:02:58,508 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:02:58,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:02:58,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:02:58,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:02:58,509 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:02:58,837 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:02:58,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:02:58,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:02:58,855 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:02:58,855 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:02:58,856 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy1_ground-2.i [2019-11-23 23:02:58,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b5f0032/1f7f984880684833933a651f0f12ca9a/FLAGb3b8930b6 [2019-11-23 23:02:59,418 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:02:59,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy1_ground-2.i [2019-11-23 23:02:59,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b5f0032/1f7f984880684833933a651f0f12ca9a/FLAGb3b8930b6 [2019-11-23 23:02:59,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b5f0032/1f7f984880684833933a651f0f12ca9a [2019-11-23 23:02:59,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:02:59,864 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:02:59,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:02:59,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:02:59,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:02:59,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:02:59" (1/1) ... [2019-11-23 23:02:59,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6163be9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:59, skipping insertion in model container [2019-11-23 23:02:59,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:02:59" (1/1) ... [2019-11-23 23:02:59,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:02:59,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:03:00,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:03:00,092 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:03:00,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:03:00,130 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:03:00,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:00 WrapperNode [2019-11-23 23:03:00,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:03:00,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:03:00,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:03:00,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:03:00,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:00" (1/1) ... [2019-11-23 23:03:00,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:00" (1/1) ... [2019-11-23 23:03:00,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:03:00,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:03:00,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:03:00,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:03:00,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:00" (1/1) ... [2019-11-23 23:03:00,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:00" (1/1) ... [2019-11-23 23:03:00,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:00" (1/1) ... [2019-11-23 23:03:00,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:00" (1/1) ... [2019-11-23 23:03:00,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:00" (1/1) ... [2019-11-23 23:03:00,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:00" (1/1) ... [2019-11-23 23:03:00,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:00" (1/1) ... [2019-11-23 23:03:00,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:03:00,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:03:00,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:03:00,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:03:00,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:00" (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 23:03:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:03:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:03:00,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:03:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:03:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:03:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:03:00,740 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:03:00,741 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 23:03:00,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:03:00 BoogieIcfgContainer [2019-11-23 23:03:00,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:03:00,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:03:00,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:03:00,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:03:00,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:02:59" (1/3) ... [2019-11-23 23:03:00,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b86cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:03:00, skipping insertion in model container [2019-11-23 23:03:00,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:00" (2/3) ... [2019-11-23 23:03:00,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b86cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:03:00, skipping insertion in model container [2019-11-23 23:03:00,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:03:00" (3/3) ... [2019-11-23 23:03:00,752 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy1_ground-2.i [2019-11-23 23:03:00,764 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:03:00,771 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:03:00,782 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:03:00,804 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:03:00,804 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:03:00,804 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:03:00,804 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:03:00,804 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:03:00,805 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:03:00,805 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:03:00,805 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:03:00,816 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-23 23:03:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 23:03:00,822 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:03:00,822 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 23:03:00,823 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:03:00,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:03:00,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1683122703, now seen corresponding path program 1 times [2019-11-23 23:03:00,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:03:00,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832209466] [2019-11-23 23:03:00,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:03:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:03:00,980 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 23:03:00,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832209466] [2019-11-23 23:03:00,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:03:00,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:03:00,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159660420] [2019-11-23 23:03:00,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:03:00,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:03:01,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:03:01,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:03:01,009 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-23 23:03:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:03:01,033 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2019-11-23 23:03:01,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:03:01,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 23:03:01,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:03:01,045 INFO L225 Difference]: With dead ends: 17 [2019-11-23 23:03:01,045 INFO L226 Difference]: Without dead ends: 9 [2019-11-23 23:03:01,050 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 23:03:01,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-23 23:03:01,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-23 23:03:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-23 23:03:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2019-11-23 23:03:01,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2019-11-23 23:03:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:03:01,080 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-11-23 23:03:01,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:03:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2019-11-23 23:03:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 23:03:01,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:03:01,081 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:03:01,082 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:03:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:03:01,082 INFO L82 PathProgramCache]: Analyzing trace with hash -806322650, now seen corresponding path program 1 times [2019-11-23 23:03:01,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:03:01,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026473635] [2019-11-23 23:03:01,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:03:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:03:01,129 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 23:03:01,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026473635] [2019-11-23 23:03:01,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:03:01,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:03:01,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560862836] [2019-11-23 23:03:01,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:03:01,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:03:01,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:03:01,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:03:01,135 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 3 states. [2019-11-23 23:03:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:03:01,148 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2019-11-23 23:03:01,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:03:01,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-23 23:03:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:03:01,149 INFO L225 Difference]: With dead ends: 15 [2019-11-23 23:03:01,149 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 23:03:01,150 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 23:03:01,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 23:03:01,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 23:03:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 23:03:01,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-23 23:03:01,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2019-11-23 23:03:01,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:03:01,154 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-23 23:03:01,155 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:03:01,155 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-23 23:03:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 23:03:01,155 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:03:01,155 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:03:01,156 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:03:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:03:01,156 INFO L82 PathProgramCache]: Analyzing trace with hash 769985476, now seen corresponding path program 1 times [2019-11-23 23:03:01,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:03:01,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373401824] [2019-11-23 23:03:01,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:03:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:03:01,211 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 23:03:01,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373401824] [2019-11-23 23:03:01,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170070288] [2019-11-23 23:03:01,213 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 23:03:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:03:01,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:03:01,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:03:01,304 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 23:03:01,304 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:03:01,331 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 23:03:01,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [7327365] [2019-11-23 23:03:01,358 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-23 23:03:01,358 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:03:01,365 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:03:01,373 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:03:01,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:03:04,464 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 165 [2019-11-23 23:03:04,624 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-11-23 23:03:04,730 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 169 [2019-11-23 23:03:06,524 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2019-11-23 23:03:09,887 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 204 [2019-11-23 23:03:12,611 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2019-11-23 23:03:18,052 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2019-11-23 23:03:18,240 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-23 23:03:18,384 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 195 [2019-11-23 23:03:23,575 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 217 [2019-11-23 23:03:29,208 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2019-11-23 23:03:34,892 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 228 [2019-11-23 23:03:41,610 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 244 [2019-11-23 23:03:45,192 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 245 [2019-11-23 23:03:48,696 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 248 [2019-11-23 23:03:52,305 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 250 [2019-11-23 23:03:56,012 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 254 [2019-11-23 23:03:59,821 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 258 [2019-11-23 23:04:03,465 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2019-11-23 23:04:07,353 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 264 [2019-11-23 23:04:11,445 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 267 [2019-11-23 23:04:15,429 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 269 [2019-11-23 23:04:19,687 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 273 [2019-11-23 23:04:23,955 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 276 [2019-11-23 23:04:28,657 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 283 [2019-11-23 23:04:33,341 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 288