/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_maxInArray_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:11:02,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:11:02,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:11:02,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:11:02,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:11:02,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:11:02,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:11:02,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:11:02,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:11:02,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:11:02,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:11:02,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:11:02,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:11:02,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:11:02,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:11:02,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:11:02,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:11:02,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:11:02,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:11:02,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:11:02,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:11:02,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:11:02,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:11:02,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:11:02,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 23:11:02,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 23:11:02,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 23:11:02,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 23:11:02,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 23:11:02,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 23:11:02,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 23:11:02,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 23:11:02,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 23:11:02,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 23:11:02,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 23:11:02,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 23:11:02,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 23:11:02,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 23:11:02,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:11:02,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:11:02,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:11:02,739 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 23:11:02,761 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:11:02,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:11:02,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:11:02,763 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:11:02,764 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:11:02,764 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:11:02,764 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:11:02,764 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:11:02,765 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:11:02,765 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:11:02,766 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:11:02,766 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:11:02,766 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:11:02,767 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:11:02,767 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:11:02,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:11:02,768 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:11:02,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:11:02,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:11:02,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:11:02,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:11:02,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:11:02,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:11:02,770 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:11:02,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:11:02,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:11:02,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:11:02,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:11:02,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:11:02,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:11:02,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:11:02,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:11:02,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:11:02,773 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:11:02,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:11:02,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:11:02,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:11:02,774 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:11:03,034 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:11:03,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:11:03,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:11:03,052 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:11:03,052 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:11:03,053 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i [2019-11-23 23:11:03,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2487276f5/9fa2ab10230e4063bdd174ac9f219fd8/FLAG24c92fe63 [2019-11-23 23:11:03,519 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:11:03,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i [2019-11-23 23:11:03,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2487276f5/9fa2ab10230e4063bdd174ac9f219fd8/FLAG24c92fe63 [2019-11-23 23:11:03,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2487276f5/9fa2ab10230e4063bdd174ac9f219fd8 [2019-11-23 23:11:03,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:11:03,956 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:11:03,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:11:03,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:11:03,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:11:03,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:11:03" (1/1) ... [2019-11-23 23:11:03,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa5dada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:03, skipping insertion in model container [2019-11-23 23:11:03,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:11:03" (1/1) ... [2019-11-23 23:11:03,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:11:03,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:11:04,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:11:04,201 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:11:04,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:11:04,237 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:11:04,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:04 WrapperNode [2019-11-23 23:11:04,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:11:04,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:11:04,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:11:04,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:11:04,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:04" (1/1) ... [2019-11-23 23:11:04,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:04" (1/1) ... [2019-11-23 23:11:04,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:11:04,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:11:04,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:11:04,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:11:04,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:04" (1/1) ... [2019-11-23 23:11:04,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:04" (1/1) ... [2019-11-23 23:11:04,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:04" (1/1) ... [2019-11-23 23:11:04,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:04" (1/1) ... [2019-11-23 23:11:04,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:04" (1/1) ... [2019-11-23 23:11:04,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:04" (1/1) ... [2019-11-23 23:11:04,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:04" (1/1) ... [2019-11-23 23:11:04,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:11:04,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:11:04,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:11:04,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:11:04,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:04" (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 23:11:04,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:11:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:11:04,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:11:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:11:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:11:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:11:04,795 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:11:04,795 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 23:11:04,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:11:04 BoogieIcfgContainer [2019-11-23 23:11:04,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:11:04,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:11:04,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:11:04,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:11:04,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:11:03" (1/3) ... [2019-11-23 23:11:04,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a868bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:11:04, skipping insertion in model container [2019-11-23 23:11:04,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:04" (2/3) ... [2019-11-23 23:11:04,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a868bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:11:04, skipping insertion in model container [2019-11-23 23:11:04,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:11:04" (3/3) ... [2019-11-23 23:11:04,805 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_maxInArray_ground.i [2019-11-23 23:11:04,815 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:11:04,825 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:11:04,834 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:11:04,852 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:11:04,852 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:11:04,853 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:11:04,853 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:11:04,853 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:11:04,853 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:11:04,853 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:11:04,853 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:11:04,867 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-23 23:11:04,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 23:11:04,873 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:11:04,874 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 23:11:04,874 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:11:04,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:11:04,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1505502803, now seen corresponding path program 1 times [2019-11-23 23:11:04,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:11:04,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90066553] [2019-11-23 23:11:04,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:11:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:11:05,024 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 23:11:05,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90066553] [2019-11-23 23:11:05,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:11:05,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:11:05,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949374973] [2019-11-23 23:11:05,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:11:05,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:11:05,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:11:05,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:11:05,050 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-23 23:11:05,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:11:05,079 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2019-11-23 23:11:05,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:11:05,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 23:11:05,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:11:05,091 INFO L225 Difference]: With dead ends: 17 [2019-11-23 23:11:05,091 INFO L226 Difference]: Without dead ends: 9 [2019-11-23 23:11:05,095 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 23:11:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-23 23:11:05,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-23 23:11:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-23 23:11:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2019-11-23 23:11:05,130 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2019-11-23 23:11:05,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:11:05,131 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-11-23 23:11:05,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:11:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2019-11-23 23:11:05,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 23:11:05,132 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:11:05,132 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:11:05,133 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:11:05,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:11:05,133 INFO L82 PathProgramCache]: Analyzing trace with hash 344093738, now seen corresponding path program 1 times [2019-11-23 23:11:05,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:11:05,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214828980] [2019-11-23 23:11:05,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:11:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:11:05,196 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 23:11:05,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214828980] [2019-11-23 23:11:05,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:11:05,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:11:05,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210395438] [2019-11-23 23:11:05,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:11:05,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:11:05,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:11:05,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:11:05,200 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 3 states. [2019-11-23 23:11:05,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:11:05,211 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2019-11-23 23:11:05,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:11:05,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-23 23:11:05,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:11:05,213 INFO L225 Difference]: With dead ends: 15 [2019-11-23 23:11:05,213 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 23:11:05,214 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 23:11:05,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 23:11:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 23:11:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 23:11:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-23 23:11:05,218 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2019-11-23 23:11:05,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:11:05,218 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-23 23:11:05,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:11:05,219 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-23 23:11:05,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 23:11:05,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:11:05,219 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:11:05,220 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:11:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:11:05,220 INFO L82 PathProgramCache]: Analyzing trace with hash 2074197827, now seen corresponding path program 1 times [2019-11-23 23:11:05,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:11:05,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805083862] [2019-11-23 23:11:05,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:11:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:11:05,291 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 23:11:05,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805083862] [2019-11-23 23:11:05,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028470597] [2019-11-23 23:11:05,292 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 23:11:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:11:05,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:11:05,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:11:05,393 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 23:11:05,393 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:11:05,419 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 23:11:05,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [450553484] [2019-11-23 23:11:05,442 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-23 23:11:05,442 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:11:05,448 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:11:05,456 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:11:05,456 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:11:20,559 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2019-11-23 23:11:20,682 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 215 [2019-11-23 23:11:27,134 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2019-11-23 23:11:27,246 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 233 [2019-11-23 23:11:45,966 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 274 [2019-11-23 23:11:52,104 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 282 [2019-11-23 23:12:10,321 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 315 [2019-11-23 23:12:15,093 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 323 [2019-11-23 23:12:15,354 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 322 [2019-11-23 23:12:17,878 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 324 [2019-11-23 23:12:18,009 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2019-11-23 23:12:18,115 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 326 [2019-11-23 23:12:20,987 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 331 [2019-11-23 23:12:23,728 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2019-11-23 23:12:23,849 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 334 [2019-11-23 23:12:26,097 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 339 [2019-11-23 23:12:26,214 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 336 [2019-11-23 23:12:28,695 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 343 [2019-11-23 23:12:28,802 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 340 [2019-11-23 23:12:31,281 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 344 [2019-11-23 23:12:31,401 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 344 [2019-11-23 23:12:33,882 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 347 [2019-11-23 23:12:34,014 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 345 [2019-11-23 23:12:34,145 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2019-11-23 23:12:34,277 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 347