/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/list-ext3-properties/sll_circular_traversal-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:04:24,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:04:24,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:04:24,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:04:24,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:04:24,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:04:24,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:04:24,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:04:24,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:04:24,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:04:24,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:04:24,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:04:24,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:04:24,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:04:24,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:04:24,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:04:24,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:04:24,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:04:24,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:04:24,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:04:24,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:04:24,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:04:24,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:04:24,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:04:24,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:04:24,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:04:24,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:04:24,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:04:24,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:04:24,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:04:24,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:04:24,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:04:24,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:04:24,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:04:24,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:04:24,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:04:24,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:04:24,193 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:04:24,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:04:24,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:04:24,195 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:04:24,195 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:04:24,195 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:04:24,195 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:04:24,195 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:04:24,196 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:04:24,196 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:04:24,197 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:04:24,197 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:04:24,197 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:04:24,198 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:04:24,198 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:04:24,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:04:24,199 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:04:24,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:04:24,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:04:24,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:04:24,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:04:24,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:04:24,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:04:24,201 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:04:24,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:04:24,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:04:24,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:04:24,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:04:24,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:04:24,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:04:24,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:04:24,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:04:24,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:04:24,204 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:04:24,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:04:24,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:04:24,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:04:24,205 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:04:24,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:04:24,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:04:24,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:04:24,566 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:04:24,566 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:04:24,567 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i [2019-11-24 04:04:24,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f1edd4a/d294b45e34424a018a1cf5593b046d21/FLAGf042ccd67 [2019-11-24 04:04:25,212 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:04:25,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i [2019-11-24 04:04:25,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f1edd4a/d294b45e34424a018a1cf5593b046d21/FLAGf042ccd67 [2019-11-24 04:04:25,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f1edd4a/d294b45e34424a018a1cf5593b046d21 [2019-11-24 04:04:25,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:04:25,481 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:04:25,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:04:25,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:04:25,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:04:25,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:04:25" (1/1) ... [2019-11-24 04:04:25,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa3939b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:25, skipping insertion in model container [2019-11-24 04:04:25,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:04:25" (1/1) ... [2019-11-24 04:04:25,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:04:25,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:04:26,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:04:26,021 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:04:26,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:04:26,129 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:04:26,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:26 WrapperNode [2019-11-24 04:04:26,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:04:26,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:04:26,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:04:26,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:04:26,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:26" (1/1) ... [2019-11-24 04:04:26,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:26" (1/1) ... [2019-11-24 04:04:26,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:04:26,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:04:26,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:04:26,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:04:26,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:26" (1/1) ... [2019-11-24 04:04:26,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:26" (1/1) ... [2019-11-24 04:04:26,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:26" (1/1) ... [2019-11-24 04:04:26,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:26" (1/1) ... [2019-11-24 04:04:26,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:26" (1/1) ... [2019-11-24 04:04:26,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:26" (1/1) ... [2019-11-24 04:04:26,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:26" (1/1) ... [2019-11-24 04:04:26,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:04:26,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:04:26,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:04:26,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:04:26,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:04:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 04:04:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 04:04:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 04:04:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 04:04:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 04:04:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 04:04:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:04:26,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:04:26,769 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:04:26,770 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-24 04:04:26,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:04:26 BoogieIcfgContainer [2019-11-24 04:04:26,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:04:26,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:04:26,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:04:26,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:04:26,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:04:25" (1/3) ... [2019-11-24 04:04:26,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12881820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:04:26, skipping insertion in model container [2019-11-24 04:04:26,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:26" (2/3) ... [2019-11-24 04:04:26,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12881820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:04:26, skipping insertion in model container [2019-11-24 04:04:26,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:04:26" (3/3) ... [2019-11-24 04:04:26,780 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-11-24 04:04:26,791 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:04:26,802 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:04:26,815 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:04:26,836 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:04:26,836 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:04:26,836 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:04:26,836 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:04:26,836 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:04:26,837 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:04:26,837 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:04:26,837 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:04:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-24 04:04:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:04:26,855 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:04:26,856 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:04:26,856 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:04:26,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:04:26,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1039727438, now seen corresponding path program 1 times [2019-11-24 04:04:26,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:04:26,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093047602] [2019-11-24 04:04:26,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:04:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:04:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:04:27,139 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093047602] [2019-11-24 04:04:27,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:04:27,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:04:27,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126351869] [2019-11-24 04:04:27,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:04:27,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:04:27,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:04:27,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:04:27,173 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2019-11-24 04:04:27,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:04:27,220 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2019-11-24 04:04:27,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:04:27,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-24 04:04:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:04:27,234 INFO L225 Difference]: With dead ends: 33 [2019-11-24 04:04:27,235 INFO L226 Difference]: Without dead ends: 15 [2019-11-24 04:04:27,244 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 [2019-11-24 04:04:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-24 04:04:27,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-24 04:04:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-24 04:04:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-24 04:04:27,286 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2019-11-24 04:04:27,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:04:27,287 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-24 04:04:27,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:04:27,287 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-24 04:04:27,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:04:27,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:04:27,288 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:04:27,288 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:04:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:04:27,289 INFO L82 PathProgramCache]: Analyzing trace with hash -325945519, now seen corresponding path program 1 times [2019-11-24 04:04:27,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:04:27,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041885868] [2019-11-24 04:04:27,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:04:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:04:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:04:27,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041885868] [2019-11-24 04:04:27,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293817804] [2019-11-24 04:04:27,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:04:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:04:27,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-24 04:04:27,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:04:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:04:27,600 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:04:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:04:27,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1015420196] [2019-11-24 04:04:27,668 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 04:04:27,668 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:04:27,674 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:04:27,682 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:04:27,683 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:04:27,877 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:28,216 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:28,855 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-11-24 04:04:28,999 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:29,337 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:30,314 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2019-11-24 04:04:30,567 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2019-11-24 04:04:30,843 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2019-11-24 04:04:31,144 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2019-11-24 04:04:31,380 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:31,576 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2019-11-24 04:04:31,926 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2019-11-24 04:04:32,296 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 04:04:32,457 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:32,590 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2019-11-24 04:04:32,614 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:33,352 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:34,861 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 225 [2019-11-24 04:04:34,992 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 226 [2019-11-24 04:04:35,724 WARN L192 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 588 [2019-11-24 04:04:36,085 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 589 [2019-11-24 04:04:36,552 WARN L192 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 590 [2019-11-24 04:04:36,833 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 591 [2019-11-24 04:04:37,336 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 592 [2019-11-24 04:04:37,367 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:37,961 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 585 [2019-11-24 04:04:38,564 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-11-24 04:04:38,870 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-11-24 04:04:39,730 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 580 [2019-11-24 04:04:40,437 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-11-24 04:04:41,779 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:41,943 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-24 04:04:41,970 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:43,096 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 549 [2019-11-24 04:04:43,924 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 541 [2019-11-24 04:04:44,593 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 533 [2019-11-24 04:04:45,193 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 525 [2019-11-24 04:04:45,683 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 516 [2019-11-24 04:04:45,713 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:45,953 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 502 [2019-11-24 04:04:46,084 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:46,201 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 488 [2019-11-24 04:04:46,349 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:46,817 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 464 DAG size of output: 462 [2019-11-24 04:04:47,045 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 453 [2019-11-24 04:04:47,257 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 452 DAG size of output: 450 [2019-11-24 04:04:47,561 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 438 [2019-11-24 04:04:47,592 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:48,152 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:48,496 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:48,520 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:48,544 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:48,705 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2019-11-24 04:04:49,577 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 186 [2019-11-24 04:04:50,165 WARN L192 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 588 [2019-11-24 04:04:50,459 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 589 [2019-11-24 04:04:50,701 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 590 [2019-11-24 04:04:50,940 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 591 [2019-11-24 04:04:50,963 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:51,202 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-11-24 04:04:51,473 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 585 [2019-11-24 04:04:51,746 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 586 [2019-11-24 04:04:51,959 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 587 [2019-11-24 04:04:52,495 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 583 [2019-11-24 04:04:52,962 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-11-24 04:04:54,545 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:54,704 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-11-24 04:04:54,727 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:55,525 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 551 [2019-11-24 04:04:56,257 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 543 [2019-11-24 04:04:56,966 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 535 [2019-11-24 04:04:57,511 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 527 [2019-11-24 04:04:58,032 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 518 [2019-11-24 04:04:58,511 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:58,633 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 504 [2019-11-24 04:04:58,958 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:59,066 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 490 [2019-11-24 04:04:59,279 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:59,468 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:59,874 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 452 DAG size of output: 448 [2019-11-24 04:05:00,144 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 447 DAG size of output: 445 [2019-11-24 04:05:00,388 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 444 DAG size of output: 442 [2019-11-24 04:05:00,877 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 437 DAG size of output: 431 [2019-11-24 04:05:01,412 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-11-24 04:05:01,676 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-11-24 04:05:01,975 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-11-24 04:05:02,143 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:02,414 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-11-24 04:05:02,658 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-11-24 04:05:02,926 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-11-24 04:05:03,154 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-11-24 04:05:03,188 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:03,429 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-11-24 04:05:03,496 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:03,531 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:03,563 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:03,592 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:03,620 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:03,648 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:03,677 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:03,931 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-11-24 04:05:03,973 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:04,194 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-11-24 04:05:04,269 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:04,287 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:04,316 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:04,706 WARN L192 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2019-11-24 04:05:05,109 WARN L192 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 493 DAG size of output: 404 [2019-11-24 04:05:05,261 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2019-11-24 04:05:05,490 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 425 DAG size of output: 422