/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-ext2-properties/simple_and_skiplist_2lvl-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:03:04,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:03:04,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:03:04,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:03:04,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:03:04,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:03:04,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:03:04,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:03:04,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:03:04,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:03:04,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:03:04,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:03:04,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:03:04,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:03:04,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:03:04,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:03:04,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:03:04,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:03:04,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:03:04,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:03:04,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:03:04,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:03:04,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:03:04,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:03:04,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:03:04,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:03:04,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:03:04,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:03:04,981 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 04:03:05,015 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:03:05,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:03:05,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:03:05,016 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:03:05,016 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:03:05,016 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:03:05,017 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:03:05,017 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:03:05,017 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:03:05,017 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:03:05,017 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:03:05,018 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:03:05,022 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:03:05,022 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:03:05,022 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:03:05,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:03:05,023 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:03:05,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:03:05,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:03:05,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:03:05,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:03:05,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:03:05,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:03:05,024 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:03:05,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:03:05,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:03:05,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:03:05,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:03:05,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:03:05,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:03:05,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:03:05,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:03:05,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:03:05,027 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:03:05,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:03:05,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:03:05,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:03:05,029 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:03:05,282 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:03:05,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:03:05,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:03:05,302 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:03:05,303 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:03:05,303 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-2.i [2019-11-24 04:03:05,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb0067f83/90e14c2f88db41d08cea8bd0656c8980/FLAG6ba337c96 [2019-11-24 04:03:05,874 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:03:05,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-2.i [2019-11-24 04:03:05,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb0067f83/90e14c2f88db41d08cea8bd0656c8980/FLAG6ba337c96 [2019-11-24 04:03:06,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb0067f83/90e14c2f88db41d08cea8bd0656c8980 [2019-11-24 04:03:06,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:03:06,207 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:03:06,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:03:06,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:03:06,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:03:06,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:03:06" (1/1) ... [2019-11-24 04:03:06,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4adb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06, skipping insertion in model container [2019-11-24 04:03:06,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:03:06" (1/1) ... [2019-11-24 04:03:06,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:03:06,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:03:06,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:03:06,745 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:03:06,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:03:06,857 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:03:06,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06 WrapperNode [2019-11-24 04:03:06,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:03:06,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:03:06,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:03:06,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:03:06,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06" (1/1) ... [2019-11-24 04:03:06,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06" (1/1) ... [2019-11-24 04:03:06,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:03:06,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:03:06,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:03:06,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:03:06,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06" (1/1) ... [2019-11-24 04:03:06,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06" (1/1) ... [2019-11-24 04:03:06,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06" (1/1) ... [2019-11-24 04:03:06,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06" (1/1) ... [2019-11-24 04:03:06,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06" (1/1) ... [2019-11-24 04:03:06,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06" (1/1) ... [2019-11-24 04:03:06,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06" (1/1) ... [2019-11-24 04:03:06,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:03:06,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:03:06,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:03:06,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:03:06,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06" (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 04:03:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 04:03:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 04:03:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 04:03:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 04:03:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 04:03:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 04:03:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:03:07,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:03:07,854 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:03:07,855 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-24 04:03:07,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:03:07 BoogieIcfgContainer [2019-11-24 04:03:07,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:03:07,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:03:07,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:03:07,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:03:07,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:03:06" (1/3) ... [2019-11-24 04:03:07,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e183d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:03:07, skipping insertion in model container [2019-11-24 04:03:07,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:06" (2/3) ... [2019-11-24 04:03:07,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e183d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:03:07, skipping insertion in model container [2019-11-24 04:03:07,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:03:07" (3/3) ... [2019-11-24 04:03:07,872 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_and_skiplist_2lvl-2.i [2019-11-24 04:03:07,882 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:03:07,889 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:03:07,900 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:03:07,921 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:03:07,921 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:03:07,921 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:03:07,921 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:03:07,922 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:03:07,922 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:03:07,922 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:03:07,922 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:03:07,934 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 04:03:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:03:07,940 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:03:07,941 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:03:07,942 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:03:07,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:03:07,947 INFO L82 PathProgramCache]: Analyzing trace with hash 293584007, now seen corresponding path program 1 times [2019-11-24 04:03:07,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:03:07,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425028714] [2019-11-24 04:03:07,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:03:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:03:08,079 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 04:03:08,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425028714] [2019-11-24 04:03:08,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:03:08,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:03:08,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832413088] [2019-11-24 04:03:08,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:03:08,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:03:08,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:03:08,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:03:08,105 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 04:03:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:03:08,124 INFO L93 Difference]: Finished difference Result 45 states and 67 transitions. [2019-11-24 04:03:08,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:03:08,125 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 04:03:08,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:03:08,133 INFO L225 Difference]: With dead ends: 45 [2019-11-24 04:03:08,134 INFO L226 Difference]: Without dead ends: 11 [2019-11-24 04:03:08,137 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:03:08,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-24 04:03:08,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-24 04:03:08,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-24 04:03:08,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-24 04:03:08,174 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2019-11-24 04:03:08,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:03:08,175 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-24 04:03:08,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:03:08,175 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-11-24 04:03:08,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:03:08,176 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:03:08,176 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:03:08,176 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:03:08,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:03:08,177 INFO L82 PathProgramCache]: Analyzing trace with hash 68532048, now seen corresponding path program 1 times [2019-11-24 04:03:08,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:03:08,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455826910] [2019-11-24 04:03:08,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:03:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:03:08,319 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 04:03:08,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455826910] [2019-11-24 04:03:08,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:03:08,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 04:03:08,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064241524] [2019-11-24 04:03:08,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:03:08,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:03:08,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:03:08,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:03:08,327 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2019-11-24 04:03:08,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:03:08,428 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-11-24 04:03:08,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:03:08,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 04:03:08,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:03:08,429 INFO L225 Difference]: With dead ends: 25 [2019-11-24 04:03:08,429 INFO L226 Difference]: Without dead ends: 23 [2019-11-24 04:03:08,431 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-24 04:03:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-24 04:03:08,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2019-11-24 04:03:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-24 04:03:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-24 04:03:08,436 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2019-11-24 04:03:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:03:08,436 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-24 04:03:08,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:03:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-24 04:03:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 04:03:08,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:03:08,437 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:03:08,438 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:03:08,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:03:08,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1533583739, now seen corresponding path program 1 times [2019-11-24 04:03:08,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:03:08,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926798806] [2019-11-24 04:03:08,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:03:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:03:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:03:08,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926798806] [2019-11-24 04:03:08,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992725925] [2019-11-24 04:03:08,641 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 04:03:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:03:08,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-24 04:03:08,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:03:08,818 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-24 04:03:08,819 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 04:03:08,831 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:03:08,835 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-24 04:03:08,836 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-24 04:03:08,847 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:03:08,848 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-24 04:03:08,848 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2019-11-24 04:03:08,865 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-24 04:03:08,866 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 04:03:08,877 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:03:08,882 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-24 04:03:08,882 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-24 04:03:08,889 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:03:08,889 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-24 04:03:08,890 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-11-24 04:03:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:03:08,892 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:03:08,929 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2019-11-24 04:03:08,931 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-24 04:03:08,946 INFO L567 ElimStorePlain]: treesize reduction 19, result has 36.7 percent of original size [2019-11-24 04:03:08,947 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_53| vanished before elimination [2019-11-24 04:03:08,947 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-24 04:03:08,947 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2019-11-24 04:03:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:03:08,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1189862010] [2019-11-24 04:03:09,008 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-24 04:03:09,009 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:03:09,017 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:03:09,024 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:03:09,025 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:03:09,196 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:09,404 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:03:10,017 WARN L192 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-11-24 04:03:10,243 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2019-11-24 04:03:10,491 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2019-11-24 04:03:10,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-24 04:03:10,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5, 5] total 14 [2019-11-24 04:03:10,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194339802] [2019-11-24 04:03:10,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-24 04:03:10,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:03:10,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-24 04:03:10,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2019-11-24 04:03:10,495 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2019-11-24 04:03:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:03:10,584 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-11-24 04:03:10,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 04:03:10,585 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-24 04:03:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:03:10,586 INFO L225 Difference]: With dead ends: 27 [2019-11-24 04:03:10,586 INFO L226 Difference]: Without dead ends: 19 [2019-11-24 04:03:10,588 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2019-11-24 04:03:10,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-24 04:03:10,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2019-11-24 04:03:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-24 04:03:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-24 04:03:10,591 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2019-11-24 04:03:10,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:03:10,592 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-24 04:03:10,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-24 04:03:10,592 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-24 04:03:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 04:03:10,592 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:03:10,593 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:03:10,802 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:03:10,802 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:03:10,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:03:10,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1454352152, now seen corresponding path program 1 times [2019-11-24 04:03:10,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:03:10,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968330136] [2019-11-24 04:03:10,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:03:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:03:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:03:10,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968330136] [2019-11-24 04:03:10,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735620869] [2019-11-24 04:03:10,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:03:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:03:10,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-24 04:03:10,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:03:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:03:11,302 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:03:14,286 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2019-11-24 04:03:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:03:14,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [949354053] [2019-11-24 04:03:14,457 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-24 04:03:14,472 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:03:14,472 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:03:14,473 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:03:14,473 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:03:14,545 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:14,655 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:14,749 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:15,285 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:15,493 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:15,760 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:16,899 WARN L213 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:16,922 WARN L213 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:16,943 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:16,960 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:17,047 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:17,789 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 165 [2019-11-24 04:03:17,902 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 175 [2019-11-24 04:03:18,100 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:19,622 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:19,648 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:19,672 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:19,725 WARN L213 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:22,538 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:22,719 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2019-11-24 04:03:22,939 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2019-11-24 04:03:23,110 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2019-11-24 04:03:23,214 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:23,348 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2019-11-24 04:03:23,501 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 377 DAG size of output: 355 [2019-11-24 04:03:23,637 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:23,740 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 418 DAG size of output: 339 [2019-11-24 04:03:23,761 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:23,780 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:23,797 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:24,128 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 400 DAG size of output: 398 [2019-11-24 04:03:24,462 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 416 DAG size of output: 389 [2019-11-24 04:03:24,637 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 380 DAG size of output: 379 [2019-11-24 04:03:24,821 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 107