/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/forester-heap/sll-sorted-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 00:36:28,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 00:36:28,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 00:36:28,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 00:36:28,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 00:36:28,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 00:36:28,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 00:36:28,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 00:36:28,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 00:36:28,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 00:36:28,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 00:36:28,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 00:36:28,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 00:36:28,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 00:36:28,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 00:36:28,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 00:36:28,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 00:36:28,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 00:36:28,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 00:36:28,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 00:36:28,446 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 00:36:28,460 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 00:36:28,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 00:36:28,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 00:36:28,462 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 00:36:28,462 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 00:36:28,462 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 00:36:28,462 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 00:36:28,462 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 00:36:28,463 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 00:36:28,463 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 00:36:28,463 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 00:36:28,463 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 00:36:28,463 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 00:36:28,464 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 00:36:28,464 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 00:36:28,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 00:36:28,465 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 00:36:28,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 00:36:28,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 00:36:28,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 00:36:28,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 00:36:28,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 00:36:28,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 00:36:28,466 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 00:36:28,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 00:36:28,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 00:36:28,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 00:36:28,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 00:36:28,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 00:36:28,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 00:36:28,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 00:36:28,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 00:36:28,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 00:36:28,468 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 00:36:28,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 00:36:28,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 00:36:28,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 00:36:28,469 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 00:36:28,739 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 00:36:28,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 00:36:28,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 00:36:28,764 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 00:36:28,765 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 00:36:28,765 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-sorted-2.i [2019-11-24 00:36:28,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa9f7c74/0f3e67557efe4c91b385e46c85d2b295/FLAG9b86f8f66 [2019-11-24 00:36:29,351 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 00:36:29,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-sorted-2.i [2019-11-24 00:36:29,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa9f7c74/0f3e67557efe4c91b385e46c85d2b295/FLAG9b86f8f66 [2019-11-24 00:36:29,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa9f7c74/0f3e67557efe4c91b385e46c85d2b295 [2019-11-24 00:36:29,720 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 00:36:29,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 00:36:29,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 00:36:29,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 00:36:29,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 00:36:29,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:36:29" (1/1) ... [2019-11-24 00:36:29,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e201d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:29, skipping insertion in model container [2019-11-24 00:36:29,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:36:29" (1/1) ... [2019-11-24 00:36:29,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 00:36:29,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 00:36:30,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 00:36:30,219 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 00:36:30,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 00:36:30,330 INFO L208 MainTranslator]: Completed translation [2019-11-24 00:36:30,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:30 WrapperNode [2019-11-24 00:36:30,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 00:36:30,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 00:36:30,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 00:36:30,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 00:36:30,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:30" (1/1) ... [2019-11-24 00:36:30,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:30" (1/1) ... [2019-11-24 00:36:30,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 00:36:30,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 00:36:30,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 00:36:30,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 00:36:30,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:30" (1/1) ... [2019-11-24 00:36:30,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:30" (1/1) ... [2019-11-24 00:36:30,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:30" (1/1) ... [2019-11-24 00:36:30,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:30" (1/1) ... [2019-11-24 00:36:30,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:30" (1/1) ... [2019-11-24 00:36:30,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:30" (1/1) ... [2019-11-24 00:36:30,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:30" (1/1) ... [2019-11-24 00:36:30,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 00:36:30,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 00:36:30,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 00:36:30,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 00:36:30,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:30" (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 00:36:30,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 00:36:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 00:36:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 00:36:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 00:36:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 00:36:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 00:36:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 00:36:30,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 00:36:31,277 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 00:36:31,277 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-24 00:36:31,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:36:31 BoogieIcfgContainer [2019-11-24 00:36:31,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 00:36:31,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 00:36:31,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 00:36:31,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 00:36:31,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:36:29" (1/3) ... [2019-11-24 00:36:31,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a19b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:36:31, skipping insertion in model container [2019-11-24 00:36:31,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:30" (2/3) ... [2019-11-24 00:36:31,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a19b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:36:31, skipping insertion in model container [2019-11-24 00:36:31,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:36:31" (3/3) ... [2019-11-24 00:36:31,287 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-sorted-2.i [2019-11-24 00:36:31,297 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 00:36:31,305 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-24 00:36:31,317 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-24 00:36:31,344 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 00:36:31,344 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 00:36:31,345 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 00:36:31,345 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 00:36:31,345 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 00:36:31,345 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 00:36:31,345 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 00:36:31,346 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 00:36:31,362 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-11-24 00:36:31,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 00:36:31,369 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:36:31,370 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 00:36:31,370 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:36:31,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:36:31,375 INFO L82 PathProgramCache]: Analyzing trace with hash 263082527, now seen corresponding path program 1 times [2019-11-24 00:36:31,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:36:31,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290192914] [2019-11-24 00:36:31,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:36:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:36:31,517 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 00:36:31,518 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290192914] [2019-11-24 00:36:31,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 00:36:31,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 00:36:31,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534494927] [2019-11-24 00:36:31,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 00:36:31,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 00:36:31,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 00:36:31,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 00:36:31,542 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2019-11-24 00:36:31,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 00:36:31,567 INFO L93 Difference]: Finished difference Result 97 states and 155 transitions. [2019-11-24 00:36:31,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 00:36:31,569 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-24 00:36:31,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 00:36:31,580 INFO L225 Difference]: With dead ends: 97 [2019-11-24 00:36:31,580 INFO L226 Difference]: Without dead ends: 48 [2019-11-24 00:36:31,584 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 00:36:31,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-24 00:36:31,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-11-24 00:36:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-24 00:36:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2019-11-24 00:36:31,621 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 5 [2019-11-24 00:36:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 00:36:31,622 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2019-11-24 00:36:31,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 00:36:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2019-11-24 00:36:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 00:36:31,622 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:36:31,623 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 00:36:31,623 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:36:31,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:36:31,624 INFO L82 PathProgramCache]: Analyzing trace with hash -452465154, now seen corresponding path program 1 times [2019-11-24 00:36:31,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:36:31,624 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246085544] [2019-11-24 00:36:31,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:36:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:36:31,670 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 00:36:31,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246085544] [2019-11-24 00:36:31,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 00:36:31,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 00:36:31,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121582001] [2019-11-24 00:36:31,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 00:36:31,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 00:36:31,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 00:36:31,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 00:36:31,675 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 3 states. [2019-11-24 00:36:31,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 00:36:31,748 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2019-11-24 00:36:31,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 00:36:31,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-24 00:36:31,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 00:36:31,750 INFO L225 Difference]: With dead ends: 96 [2019-11-24 00:36:31,751 INFO L226 Difference]: Without dead ends: 51 [2019-11-24 00:36:31,752 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 00:36:31,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-24 00:36:31,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2019-11-24 00:36:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-24 00:36:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-11-24 00:36:31,760 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 6 [2019-11-24 00:36:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 00:36:31,760 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2019-11-24 00:36:31,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 00:36:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2019-11-24 00:36:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 00:36:31,761 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:36:31,762 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-24 00:36:31,762 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:36:31,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:36:31,762 INFO L82 PathProgramCache]: Analyzing trace with hash 2043923001, now seen corresponding path program 1 times [2019-11-24 00:36:31,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:36:31,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52714154] [2019-11-24 00:36:31,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:36:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:36:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 00:36:31,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52714154] [2019-11-24 00:36:31,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 00:36:31,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 00:36:31,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922601047] [2019-11-24 00:36:31,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 00:36:31,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 00:36:31,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 00:36:31,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 00:36:31,854 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2019-11-24 00:36:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 00:36:31,975 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2019-11-24 00:36:31,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 00:36:31,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-24 00:36:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 00:36:31,977 INFO L225 Difference]: With dead ends: 84 [2019-11-24 00:36:31,977 INFO L226 Difference]: Without dead ends: 82 [2019-11-24 00:36:31,978 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 00:36:31,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-24 00:36:31,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 48. [2019-11-24 00:36:31,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-24 00:36:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2019-11-24 00:36:31,987 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 8 [2019-11-24 00:36:31,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 00:36:31,987 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2019-11-24 00:36:31,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 00:36:31,987 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2019-11-24 00:36:31,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-24 00:36:31,988 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:36:31,988 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 00:36:31,989 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:36:31,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:36:31,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1918740124, now seen corresponding path program 1 times [2019-11-24 00:36:31,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:36:31,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043454106] [2019-11-24 00:36:31,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:36:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:36:32,279 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 00:36:32,279 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043454106] [2019-11-24 00:36:32,279 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009742284] [2019-11-24 00:36:32,280 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 00:36:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:36:32,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-24 00:36:32,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 00:36:32,449 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:32,450 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 00:36:32,451 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:32,478 INFO L567 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2019-11-24 00:36:32,479 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-24 00:36:32,479 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:21 [2019-11-24 00:36:32,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:32,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:32,519 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:32,525 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:32,568 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 100 treesize of output 96 [2019-11-24 00:36:32,569 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:32,629 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:32,629 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 113 [2019-11-24 00:36:32,631 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:32,649 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 101 treesize of output 97 [2019-11-24 00:36:32,650 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:32,668 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-24 00:36:32,678 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:32,679 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 104 [2019-11-24 00:36:32,680 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:33,160 WARN L192 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-11-24 00:36:33,161 INFO L567 ElimStorePlain]: treesize reduction 185, result has 49.9 percent of original size [2019-11-24 00:36:33,187 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 72 [2019-11-24 00:36:33,187 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:33,332 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-24 00:36:33,333 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:33,358 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2019-11-24 00:36:33,358 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:33,454 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:33,489 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 48 [2019-11-24 00:36:33,490 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:33,572 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:33,595 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 71 [2019-11-24 00:36:33,596 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:33,663 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:33,673 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2019-11-24 00:36:33,674 INFO L496 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:33,738 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:33,760 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 47 [2019-11-24 00:36:33,761 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:33,808 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:33,809 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 6 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-24 00:36:33,810 INFO L221 ElimStorePlain]: Needed 11 recursive calls to eliminate 8 variables, input treesize:407, output treesize:122 [2019-11-24 00:36:33,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:33,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:34,017 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 00:36:34,017 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 00:36:34,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:34,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:34,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:34,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:34,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:34,175 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:34,177 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:34,187 INFO L392 ElimStorePlain]: Different costs {0=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|, v_prenex_5, v_prenex_6], 1=[|v_#memory_int_72|, v_prenex_4], 2=[v_prenex_9, |v_#memory_$Pointer$.base_61|, |v_#memory_$Pointer$.offset_61|, v_prenex_7]} [2019-11-24 00:36:34,293 INFO L343 Elim1Store]: treesize reduction 43, result has 45.6 percent of original size [2019-11-24 00:36:34,293 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 113 [2019-11-24 00:36:34,294 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:34,431 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-24 00:36:34,432 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:34,526 INFO L343 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2019-11-24 00:36:34,527 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 104 [2019-11-24 00:36:34,527 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:34,628 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-11-24 00:36:34,629 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:34,712 INFO L343 Elim1Store]: treesize reduction 43, result has 45.6 percent of original size [2019-11-24 00:36:34,713 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 113 [2019-11-24 00:36:34,713 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:34,814 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:34,878 INFO L343 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2019-11-24 00:36:34,879 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 104 [2019-11-24 00:36:34,880 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:35,012 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-11-24 00:36:35,012 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:35,029 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 113 treesize of output 99 [2019-11-24 00:36:35,030 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:35,123 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:35,127 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-24 00:36:35,130 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 96 treesize of output 82 [2019-11-24 00:36:35,132 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:35,210 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:35,246 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:35,246 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 99 [2019-11-24 00:36:35,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:35,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,250 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,250 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,254 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,255 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:35,488 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-11-24 00:36:35,489 INFO L567 ElimStorePlain]: treesize reduction 86, result has 67.2 percent of original size [2019-11-24 00:36:35,521 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:35,522 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 112 [2019-11-24 00:36:35,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,525 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:35,526 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,526 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:35,528 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,529 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,531 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:35,834 WARN L192 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-11-24 00:36:35,835 INFO L567 ElimStorePlain]: treesize reduction 276, result has 35.5 percent of original size [2019-11-24 00:36:35,853 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:35,854 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 1 case distinctions, treesize of input 71 treesize of output 74 [2019-11-24 00:36:35,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,856 INFO L496 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:35,944 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:35,959 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:36:35,960 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 1 case distinctions, treesize of input 80 treesize of output 83 [2019-11-24 00:36:35,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:35,962 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-11-24 00:36:36,101 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-11-24 00:36:36,102 INFO L567 ElimStorePlain]: treesize reduction 29, result has 75.8 percent of original size [2019-11-24 00:36:36,103 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:36,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:36,105 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:36,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:36,108 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 10 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-11-24 00:36:36,108 INFO L221 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:227, output treesize:91 [2019-11-24 00:36:36,109 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:36,109 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:36,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:36,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:36,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 00:36:36,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:36:36,228 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 00:36:36,228 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [852058262] [2019-11-24 00:36:36,275 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-11-24 00:36:36,275 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 00:36:36,283 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 00:36:36,306 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 00:36:36,307 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 00:36:36,558 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 00:36:47,046 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 8 (select |#length| |ULTIMATE.start_main_#t~malloc0.base|)) [2019-11-24 00:36:49,050 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select |#length| |ULTIMATE.start_main_#t~malloc2.base|) 8) [2019-11-24 00:36:51,055 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select |#length| |ULTIMATE.start_main_#t~malloc2.base|) 8) [2019-11-24 00:36:51,136 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 00:37:47,509 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-11-24 00:37:47,781 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-11-24 00:37:47,967 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-24 00:37:48,142 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 171 [2019-11-24 00:37:55,042 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= ULTIMATE.start_main_~x~0.base ULTIMATE.start_main_~head~0.base) [2019-11-24 00:37:57,058 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 8 (select |#length| |ULTIMATE.start_main_#t~malloc0.base|)) [2019-11-24 00:37:59,064 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 8 (select |#length| |ULTIMATE.start_main_#t~malloc0.base|)) [2019-11-24 00:38:01,096 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select |#length| |ULTIMATE.start_main_#t~malloc2.base|) 8) [2019-11-24 00:38:03,167 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select |#length| |ULTIMATE.start_main_#t~malloc2.base|) 8) [2019-11-24 00:38:03,405 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 1521 DAG size of output: 1518