/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-properties/alternating_list-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:04:52,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:04:52,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:04:52,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:04:52,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:04:52,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:04:52,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:04:52,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:04:52,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:04:52,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:04:52,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:04:52,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:04:52,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:04:52,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:04:52,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:04:52,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:04:52,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:04:52,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:04:52,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:04:52,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:04:52,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:04:52,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:04:52,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:04:52,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:04:52,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:04:52,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:04:52,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:04:52,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:04:52,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:04:52,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:04:52,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:04:52,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:04:52,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:04:52,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:04:52,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:04:52,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:04:52,942 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 04:04:52,958 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:04:52,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:04:52,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:04:52,959 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:04:52,959 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:04:52,959 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:04:52,960 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:04:52,960 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:04:52,960 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:04:52,960 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:04:52,960 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:04:52,961 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:04:52,961 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:04:52,961 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:04:52,961 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:04:52,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:04:52,962 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:04:52,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:04:52,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:04:52,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:04:52,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:04:52,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:04:52,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:04:52,963 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:04:52,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:04:52,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:04:52,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:04:52,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:04:52,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:04:52,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:04:52,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:04:52,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:04:52,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:04:52,966 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:04:52,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:04:52,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:04:52,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:04:52,966 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:04:53,250 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:04:53,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:04:53,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:04:53,270 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:04:53,270 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:04:53,271 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/alternating_list-1.i [2019-11-24 04:04:53,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20fc97111/7c16c18057f6484098a3bbec450e9cad/FLAG9b39aba28 [2019-11-24 04:04:53,926 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:04:53,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/alternating_list-1.i [2019-11-24 04:04:53,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20fc97111/7c16c18057f6484098a3bbec450e9cad/FLAG9b39aba28 [2019-11-24 04:04:54,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20fc97111/7c16c18057f6484098a3bbec450e9cad [2019-11-24 04:04:54,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:04:54,247 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:04:54,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:04:54,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:04:54,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:04:54,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:04:54" (1/1) ... [2019-11-24 04:04:54,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee1dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54, skipping insertion in model container [2019-11-24 04:04:54,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:04:54" (1/1) ... [2019-11-24 04:04:54,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:04:54,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:04:54,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:04:54,724 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:04:54,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:04:54,862 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:04:54,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54 WrapperNode [2019-11-24 04:04:54,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:04:54,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:04:54,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:04:54,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:04:54,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54" (1/1) ... [2019-11-24 04:04:54,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54" (1/1) ... [2019-11-24 04:04:54,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:04:54,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:04:54,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:04:54,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:04:54,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54" (1/1) ... [2019-11-24 04:04:54,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54" (1/1) ... [2019-11-24 04:04:54,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54" (1/1) ... [2019-11-24 04:04:54,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54" (1/1) ... [2019-11-24 04:04:54,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54" (1/1) ... [2019-11-24 04:04:54,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54" (1/1) ... [2019-11-24 04:04:54,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54" (1/1) ... [2019-11-24 04:04:54,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:04:54,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:04:54,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:04:54,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:04:54,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54" (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 04:04:55,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 04:04:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 04:04:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 04:04:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 04:04:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 04:04:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 04:04:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:04:55,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:04:55,445 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:04:55,445 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-24 04:04:55,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:04:55 BoogieIcfgContainer [2019-11-24 04:04:55,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:04:55,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:04:55,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:04:55,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:04:55,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:04:54" (1/3) ... [2019-11-24 04:04:55,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c6383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:04:55, skipping insertion in model container [2019-11-24 04:04:55,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:04:54" (2/3) ... [2019-11-24 04:04:55,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c6383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:04:55, skipping insertion in model container [2019-11-24 04:04:55,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:04:55" (3/3) ... [2019-11-24 04:04:55,455 INFO L109 eAbstractionObserver]: Analyzing ICFG alternating_list-1.i [2019-11-24 04:04:55,463 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:04:55,469 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:04:55,477 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:04:55,499 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:04:55,499 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:04:55,499 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:04:55,499 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:04:55,500 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:04:55,500 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:04:55,500 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:04:55,500 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:04:55,515 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-11-24 04:04:55,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:04:55,522 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:04:55,523 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:04:55,523 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:04:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:04:55,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1343405240, now seen corresponding path program 1 times [2019-11-24 04:04:55,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:04:55,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550508702] [2019-11-24 04:04:55,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:04:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:04:55,653 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 04:04:55,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550508702] [2019-11-24 04:04:55,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:04:55,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:04:55,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836469447] [2019-11-24 04:04:55,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:04:55,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:04:55,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:04:55,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:04:55,674 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-11-24 04:04:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:04:55,691 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2019-11-24 04:04:55,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:04:55,693 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-24 04:04:55,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:04:55,700 INFO L225 Difference]: With dead ends: 37 [2019-11-24 04:04:55,701 INFO L226 Difference]: Without dead ends: 14 [2019-11-24 04:04:55,703 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 04:04:55,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-24 04:04:55,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-24 04:04:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-24 04:04:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-24 04:04:55,732 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2019-11-24 04:04:55,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:04:55,733 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-24 04:04:55,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:04:55,733 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-24 04:04:55,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 04:04:55,733 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:04:55,734 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:04:55,734 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:04:55,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:04:55,734 INFO L82 PathProgramCache]: Analyzing trace with hash 11424206, now seen corresponding path program 1 times [2019-11-24 04:04:55,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:04:55,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562154905] [2019-11-24 04:04:55,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:04:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:04:55,824 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 04:04:55,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562154905] [2019-11-24 04:04:55,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:04:55,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 04:04:55,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82212500] [2019-11-24 04:04:55,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:04:55,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:04:55,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:04:55,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:04:55,828 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 5 states. [2019-11-24 04:04:55,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:04:55,926 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2019-11-24 04:04:55,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:04:55,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-24 04:04:55,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:04:55,927 INFO L225 Difference]: With dead ends: 36 [2019-11-24 04:04:55,928 INFO L226 Difference]: Without dead ends: 25 [2019-11-24 04:04:55,929 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 04:04:55,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-24 04:04:55,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2019-11-24 04:04:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-24 04:04:55,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-24 04:04:55,934 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-11-24 04:04:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:04:55,934 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-24 04:04:55,934 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:04:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-24 04:04:55,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:04:55,935 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:04:55,936 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:04:55,936 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:04:55,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:04:55,936 INFO L82 PathProgramCache]: Analyzing trace with hash 544541488, now seen corresponding path program 1 times [2019-11-24 04:04:55,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:04:55,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167100779] [2019-11-24 04:04:55,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:04:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:04:56,155 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 04:04:56,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167100779] [2019-11-24 04:04:56,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829991999] [2019-11-24 04:04:56,156 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 04:04:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:04:56,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-24 04:04:56,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:04:56,329 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:04:56,330 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-24 04:04:56,331 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,355 INFO L567 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2019-11-24 04:04:56,355 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,356 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:18 [2019-11-24 04:04:56,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:56,420 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:56,471 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:04:56,472 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 81 [2019-11-24 04:04:56,474 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,492 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:04:56,493 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 65 [2019-11-24 04:04:56,494 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,568 INFO L567 ElimStorePlain]: treesize reduction 60, result has 46.4 percent of original size [2019-11-24 04:04:56,585 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 15 treesize of output 1 [2019-11-24 04:04:56,585 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,603 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:04:56,611 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,625 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:04:56,633 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 04:04:56,634 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,645 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:04:56,646 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_23| vanished before elimination [2019-11-24 04:04:56,646 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,647 INFO L221 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:125, output treesize:18 [2019-11-24 04:04:56,699 INFO L343 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2019-11-24 04:04:56,699 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2019-11-24 04:04:56,700 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,710 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:04:56,710 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,711 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:12 [2019-11-24 04:04:56,750 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2019-11-24 04:04:56,751 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,759 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:04:56,761 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-24 04:04:56,761 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:19 [2019-11-24 04:04:56,824 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-11-24 04:04:56,825 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,834 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:04:56,835 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,836 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2019-11-24 04:04:56,837 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 04:04:56,838 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:04:56,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:56,900 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-24 04:04:56,904 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:56,910 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:04:56,911 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-11-24 04:04:56,912 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:54, output treesize:22 [2019-11-24 04:04:56,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:56,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:56,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:56,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:56,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:56,981 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_26|, |#memory_$Pointer$.base|, |v_#memory_$Pointer$.base_27|, |#memory_$Pointer$.offset|, v_prenex_1, v_prenex_5, v_prenex_6, v_prenex_7], 2=[v_prenex_4, |#memory_int|]} [2019-11-24 04:04:56,989 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:57,001 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:57,071 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:04:57,082 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 47 treesize of output 31 [2019-11-24 04:04:57,082 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:57,090 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 27 treesize of output 11 [2019-11-24 04:04:57,091 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:57,207 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-11-24 04:04:57,208 INFO L567 ElimStorePlain]: treesize reduction 3, result has 98.0 percent of original size [2019-11-24 04:04:57,208 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.base_27| vanished before elimination [2019-11-24 04:04:57,209 INFO L464 ElimStorePlain]: Eliminatee |#memory_$Pointer$.offset| vanished before elimination [2019-11-24 04:04:57,215 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:57,225 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:57,276 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 04:04:57,283 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:57,288 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:57,345 INFO L567 ElimStorePlain]: treesize reduction 11, result has 86.1 percent of original size [2019-11-24 04:04:57,346 INFO L464 ElimStorePlain]: Eliminatee v_prenex_6 vanished before elimination [2019-11-24 04:04:57,346 INFO L464 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2019-11-24 04:04:57,362 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 173 treesize of output 165 [2019-11-24 04:04:57,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 04:04:57,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:57,364 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:57,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:57,369 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:57,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:57,382 INFO L496 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:57,607 WARN L192 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2019-11-24 04:04:57,608 INFO L567 ElimStorePlain]: treesize reduction 294, result has 20.8 percent of original size [2019-11-24 04:04:57,622 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 156 treesize of output 148 [2019-11-24 04:04:57,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 04:04:57,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 04:04:57,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:04:57,628 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-11-24 04:04:57,740 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2019-11-24 04:04:57,741 INFO L567 ElimStorePlain]: treesize reduction 131, result has 34.5 percent of original size [2019-11-24 04:04:57,745 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 10 dim-2 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2019-11-24 04:04:57,745 INFO L221 ElimStorePlain]: Needed 11 recursive calls to eliminate 14 variables, input treesize:211, output treesize:48 [2019-11-24 04:04:57,888 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 04:04:57,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1621756113] [2019-11-24 04:04:57,942 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-24 04:04:57,942 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:04:57,953 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:04:57,970 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:04:57,971 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:04:58,116 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:58,231 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:58,347 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:58,791 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:58,884 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:59,174 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:00,073 WARN L213 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:00,126 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:00,141 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:00,149 WARN L213 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:00,162 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:05,401 WARN L192 SmtUtils]: Spent 4.72 s on a formula simplification. DAG size of input: 515 DAG size of output: 434