/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/array-tiling/mbpr3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:23:55,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:23:55,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:23:55,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:23:55,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:23:55,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:23:55,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:23:55,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:23:55,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:23:55,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:23:55,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:23:55,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:23:55,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:23:55,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:23:55,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:23:55,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:23:55,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:23:55,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:23:55,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:23:55,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:23:55,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:23:55,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:23:55,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:23:55,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:23:55,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:23:55,676 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 [2019-11-23 23:23:55,710 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:23:55,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:23:55,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:23:55,711 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:23:55,711 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:23:55,712 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:23:55,712 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:23:55,712 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:23:55,712 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:23:55,712 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:23:55,712 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:23:55,713 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:23:55,713 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:23:55,713 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:23:55,713 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:23:55,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:23:55,716 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:23:55,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:23:55,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:23:55,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:23:55,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:23:55,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:23:55,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:23:55,719 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:23:55,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:23:55,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:23:55,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:23:55,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:23:55,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:23:55,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:23:55,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:23:55,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:23:55,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:23:55,721 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:23:55,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:23:55,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:23:55,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:23:55,722 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:23:55,997 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:23:56,015 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:23:56,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:23:56,020 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:23:56,021 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:23:56,021 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr3.c [2019-11-23 23:23:56,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e12e6f56/c4047edc0ed5470ba476691dc7de7938/FLAGf3da5e532 [2019-11-23 23:23:56,546 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:23:56,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr3.c [2019-11-23 23:23:56,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e12e6f56/c4047edc0ed5470ba476691dc7de7938/FLAGf3da5e532 [2019-11-23 23:23:56,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e12e6f56/c4047edc0ed5470ba476691dc7de7938 [2019-11-23 23:23:56,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:23:56,938 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:23:56,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:23:56,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:23:56,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:23:56,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:23:56" (1/1) ... [2019-11-23 23:23:56,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a66e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:56, skipping insertion in model container [2019-11-23 23:23:56,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:23:56" (1/1) ... [2019-11-23 23:23:56,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:23:56,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:23:57,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:23:57,189 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:23:57,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:23:57,334 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:23:57,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:57 WrapperNode [2019-11-23 23:23:57,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:23:57,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:23:57,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:23:57,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:23:57,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:57" (1/1) ... [2019-11-23 23:23:57,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:57" (1/1) ... [2019-11-23 23:23:57,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:23:57,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:23:57,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:23:57,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:23:57,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:57" (1/1) ... [2019-11-23 23:23:57,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:57" (1/1) ... [2019-11-23 23:23:57,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:57" (1/1) ... [2019-11-23 23:23:57,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:57" (1/1) ... [2019-11-23 23:23:57,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:57" (1/1) ... [2019-11-23 23:23:57,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:57" (1/1) ... [2019-11-23 23:23:57,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:57" (1/1) ... [2019-11-23 23:23:57,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:23:57,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:23:57,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:23:57,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:23:57,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:57" (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 [2019-11-23 23:23:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:23:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:23:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:23:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:23:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:23:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:23:58,065 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:23:58,065 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-23 23:23:58,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:23:58 BoogieIcfgContainer [2019-11-23 23:23:58,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:23:58,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:23:58,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:23:58,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:23:58,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:23:56" (1/3) ... [2019-11-23 23:23:58,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a31990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:23:58, skipping insertion in model container [2019-11-23 23:23:58,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:57" (2/3) ... [2019-11-23 23:23:58,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a31990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:23:58, skipping insertion in model container [2019-11-23 23:23:58,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:23:58" (3/3) ... [2019-11-23 23:23:58,083 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2019-11-23 23:23:58,093 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:23:58,101 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:23:58,113 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:23:58,134 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:23:58,134 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:23:58,135 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:23:58,135 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:23:58,135 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:23:58,135 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:23:58,136 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:23:58,136 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:23:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-23 23:23:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 23:23:58,155 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:23:58,156 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:23:58,156 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:23:58,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:23:58,161 INFO L82 PathProgramCache]: Analyzing trace with hash -610455244, now seen corresponding path program 1 times [2019-11-23 23:23:58,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:23:58,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220067195] [2019-11-23 23:23:58,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:23:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:23:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:23:58,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220067195] [2019-11-23 23:23:58,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:23:58,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 23:23:58,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970361232] [2019-11-23 23:23:58,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:23:58,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:23:58,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:23:58,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:23:58,543 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-11-23 23:23:58,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:23:58,622 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2019-11-23 23:23:58,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:23:58,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-23 23:23:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:23:58,637 INFO L225 Difference]: With dead ends: 28 [2019-11-23 23:23:58,638 INFO L226 Difference]: Without dead ends: 12 [2019-11-23 23:23:58,643 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:23:58,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-23 23:23:58,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-23 23:23:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-23 23:23:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-11-23 23:23:58,688 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 9 [2019-11-23 23:23:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:23:58,689 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-11-23 23:23:58,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:23:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2019-11-23 23:23:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 23:23:58,690 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:23:58,690 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:23:58,690 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:23:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:23:58,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1066424851, now seen corresponding path program 1 times [2019-11-23 23:23:58,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:23:58,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907669408] [2019-11-23 23:23:58,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:23:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:23:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:23:58,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907669408] [2019-11-23 23:23:58,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960981233] [2019-11-23 23:23:58,882 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 [2019-11-23 23:23:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:23:58,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 23:23:58,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:23:58,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:23:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:23:59,017 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:23:59,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 23:23:59,072 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:23:59,073 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:23:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:23:59,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1381346354] [2019-11-23 23:23:59,134 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-23 23:23:59,134 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:23:59,140 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:23:59,147 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:23:59,148 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:23:59,326 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:23:59,558 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:23:59,568 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:23:59,704 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:23:59,715 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:23:59,727 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:23:59,907 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:00,084 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:00,102 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:00,115 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:00,523 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:00,811 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:00,831 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:00,851 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:01,513 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:01,871 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:01,889 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:01,907 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:02,514 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:03,177 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:03,244 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:03,251 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:03,256 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:03,506 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:03,525 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:03,534 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:03,542 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:03,741 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:03,750 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:03,757 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:03,769 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:04,016 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:04,111 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:04,118 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:04,124 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:08,413 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:08,580 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:08,595 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:08,861 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:08,884 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:08,899 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:08,923 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:08,944 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:08,962 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:09,075 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 176 [2019-11-23 23:24:09,092 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:10,518 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:11,498 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:13,428 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:15,249 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:15,265 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:15,280 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:15,296 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:15,313 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:17,102 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:19,036 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:19,507 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:19,943 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:19,957 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:19,969 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:19,982 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:19,995 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,006 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,017 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,029 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,235 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,259 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,280 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,304 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,320 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,340 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,448 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 243 [2019-11-23 23:24:20,469 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,487 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,506 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,698 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:20,935 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:25,177 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:41,778 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 500 DAG size of output: 482 [2019-11-23 23:24:56,501 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 471 [2019-11-23 23:25:01,694 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 460 [2019-11-23 23:25:01,716 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:01,741 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:01,844 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 449 [2019-11-23 23:25:01,872 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:01,904 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:01,931 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:02,047 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:20,721 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:25,169 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:29,020 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:29,094 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:29,112 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:29,128 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:29,618 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:29,638 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:29,651 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,211 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,251 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,290 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,332 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,375 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,418 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,462 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,496 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,542 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,586 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,629 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,670 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:30,873 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 197 [2019-11-23 23:25:31,844 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:32,276 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:32,830 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:33,042 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:33,475 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:33,489 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:33,496 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:33,501 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:33,695 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:33,778 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:33,784 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:33,791 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:34,581 WARN L227 Elim1Store]: Array PQE input equivalent to false