/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/dll_nullified-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:03:32,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:03:32,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:03:32,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:03:32,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:03:32,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:03:32,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:03:32,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:03:32,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:03:32,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:03:32,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:03:32,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:03:32,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:03:32,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:03:32,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:03:32,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:03:32,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:03:32,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:03:32,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:03:32,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:03:32,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:03:32,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:03:32,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:03:32,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:03:32,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 04:03:32,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 04:03:32,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 04:03:32,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 04:03:32,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 04:03:32,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 04:03:32,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:03:32,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:03:32,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:03:32,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:03:32,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:03:32,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:03:32,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:03:32,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:03:32,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:03:32,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:03:32,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:03:32,922 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 04:03:32,956 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:03:32,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:03:32,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:03:32,958 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:03:32,958 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:03:32,958 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:03:32,958 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:03:32,958 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:03:32,959 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:03:32,963 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:03:32,963 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:03:32,964 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:03:32,964 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:03:32,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:03:32,964 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:03:32,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:03:32,966 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:03:32,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:03:32,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:03:32,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:03:32,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:03:32,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:03:32,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:03:32,968 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:03:32,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:03:32,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:03:32,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:03:32,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:03:32,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:03:32,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:03:32,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:03:32,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:03:32,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:03:32,971 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:03:32,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:03:32,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:03:32,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:03:32,972 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:03:33,234 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:03:33,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:03:33,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:03:33,263 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:03:33,263 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:03:33,264 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-2.i [2019-11-24 04:03:33,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d1aa530/5d3774c7b5464d6bb762f21996ebf7f9/FLAGdd8c135f8 [2019-11-24 04:03:33,926 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:03:33,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/dll_nullified-2.i [2019-11-24 04:03:33,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d1aa530/5d3774c7b5464d6bb762f21996ebf7f9/FLAGdd8c135f8 [2019-11-24 04:03:34,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d1aa530/5d3774c7b5464d6bb762f21996ebf7f9 [2019-11-24 04:03:34,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:03:34,239 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:03:34,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:03:34,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:03:34,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:03:34,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:03:34" (1/1) ... [2019-11-24 04:03:34,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d08b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34, skipping insertion in model container [2019-11-24 04:03:34,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:03:34" (1/1) ... [2019-11-24 04:03:34,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:03:34,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:03:34,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:03:34,728 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:03:34,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:03:34,859 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:03:34,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34 WrapperNode [2019-11-24 04:03:34,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:03:34,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:03:34,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:03:34,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:03:34,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34" (1/1) ... [2019-11-24 04:03:34,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34" (1/1) ... [2019-11-24 04:03:34,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:03:34,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:03:34,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:03:34,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:03:34,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34" (1/1) ... [2019-11-24 04:03:34,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34" (1/1) ... [2019-11-24 04:03:34,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34" (1/1) ... [2019-11-24 04:03:34,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34" (1/1) ... [2019-11-24 04:03:34,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34" (1/1) ... [2019-11-24 04:03:34,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34" (1/1) ... [2019-11-24 04:03:34,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34" (1/1) ... [2019-11-24 04:03:34,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:03:34,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:03:34,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:03:34,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:03:34,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34" (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 04:03:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 04:03:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 04:03:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 04:03:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 04:03:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 04:03:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 04:03:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:03:35,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:03:35,781 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:03:35,781 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-24 04:03:35,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:03:35 BoogieIcfgContainer [2019-11-24 04:03:35,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:03:35,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:03:35,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:03:35,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:03:35,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:03:34" (1/3) ... [2019-11-24 04:03:35,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e171b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:03:35, skipping insertion in model container [2019-11-24 04:03:35,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:34" (2/3) ... [2019-11-24 04:03:35,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e171b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:03:35, skipping insertion in model container [2019-11-24 04:03:35,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:03:35" (3/3) ... [2019-11-24 04:03:35,805 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-2.i [2019-11-24 04:03:35,815 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:03:35,823 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:03:35,834 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:03:35,856 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:03:35,856 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:03:35,856 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:03:35,856 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:03:35,856 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:03:35,856 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:03:35,857 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:03:35,857 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:03:35,869 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-24 04:03:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:03:35,876 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:03:35,877 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:03:35,878 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:03:35,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:03:35,883 INFO L82 PathProgramCache]: Analyzing trace with hash -407573370, now seen corresponding path program 1 times [2019-11-24 04:03:35,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:03:35,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457767774] [2019-11-24 04:03:35,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:03:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:03:36,044 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 04:03:36,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457767774] [2019-11-24 04:03:36,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:03:36,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:03:36,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627160677] [2019-11-24 04:03:36,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:03:36,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:03:36,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:03:36,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:03:36,071 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2019-11-24 04:03:36,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:03:36,156 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2019-11-24 04:03:36,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:03:36,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-24 04:03:36,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:03:36,169 INFO L225 Difference]: With dead ends: 25 [2019-11-24 04:03:36,169 INFO L226 Difference]: Without dead ends: 12 [2019-11-24 04:03:36,172 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 04:03:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-24 04:03:36,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-11-24 04:03:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-24 04:03:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-11-24 04:03:36,210 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 6 [2019-11-24 04:03:36,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:03:36,210 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-24 04:03:36,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:03:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2019-11-24 04:03:36,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:03:36,211 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:03:36,211 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:03:36,211 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:03:36,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:03:36,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1684820255, now seen corresponding path program 1 times [2019-11-24 04:03:36,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:03:36,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858991186] [2019-11-24 04:03:36,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:03:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:03:36,340 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 04:03:36,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858991186] [2019-11-24 04:03:36,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902064942] [2019-11-24 04:03:36,341 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 04:03:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:03:36,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-24 04:03:36,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:03:36,498 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 04:03:36,499 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:03:36,531 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 04:03:36,532 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1835766397] [2019-11-24 04:03:36,568 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 04:03:36,569 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:03:36,583 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:03:36,591 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:03:36,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:03:36,856 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:38,020 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:42,450 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:43,405 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:22,588 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-11-24 04:04:24,495 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:36,860 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:44,441 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:46,008 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:46,174 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 782 [2019-11-24 04:04:46,366 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 776 [2019-11-24 04:04:46,597 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 773 [2019-11-24 04:04:48,771 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 774 [2019-11-24 04:04:48,955 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 775 [2019-11-24 04:04:51,150 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 776 [2019-11-24 04:04:53,332 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 777 [2019-11-24 04:04:55,254 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 778 [2019-11-24 04:04:57,435 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 782 [2019-11-24 04:04:59,618 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 780 [2019-11-24 04:05:06,689 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_dll_create_~new_head~0.offset 8) |ULTIMATE.start_dll_create_#t~malloc2.offset|) [2019-11-24 04:05:12,080 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_dll_create_~new_head~0.offset 12) (+ ULTIMATE.start_dll_create_~new_head~0.offset 16)) [2019-11-24 04:05:15,781 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |#memory_int| ULTIMATE.start_dll_create_~new_head~0.base))) (= (select .cse0 (+ ULTIMATE.start_dll_create_~new_head~0.offset 12)) (select .cse0 (+ ULTIMATE.start_dll_create_~new_head~0.offset 8))))