/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/mbpr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:24:00,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:24:00,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:24:00,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:24:00,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:24:00,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:24:00,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:24:00,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:24:00,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:24:00,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:24:00,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:24:00,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:24:00,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:24:00,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:24:00,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:24:00,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:24:00,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:24:00,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:24:00,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:24:00,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:24:00,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:24:00,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:24:00,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:24:00,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:24:00,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:24:00,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:24:00,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:24:00,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:24:00,102 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 23:24:00,138 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:24:00,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:24:00,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:24:00,140 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:24:00,143 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:24:00,143 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:24:00,143 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:24:00,143 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:24:00,144 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:24:00,144 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:24:00,144 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:24:00,144 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:24:00,144 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:24:00,147 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:24:00,147 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:24:00,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:24:00,148 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:24:00,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:24:00,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:24:00,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:24:00,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:24:00,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:24:00,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:24:00,149 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:24:00,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:24:00,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:24:00,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:24:00,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:24:00,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:24:00,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:24:00,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:24:00,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:24:00,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:24:00,152 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:24:00,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:24:00,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:24:00,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:24:00,155 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:24:00,480 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:24:00,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:24:00,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:24:00,503 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:24:00,503 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:24:00,504 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr4.c [2019-11-23 23:24:00,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f20ff9c/b24258cbf2bb4f2888e030ce9136c379/FLAG001121f29 [2019-11-23 23:24:01,022 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:24:01,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr4.c [2019-11-23 23:24:01,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f20ff9c/b24258cbf2bb4f2888e030ce9136c379/FLAG001121f29 [2019-11-23 23:24:01,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f20ff9c/b24258cbf2bb4f2888e030ce9136c379 [2019-11-23 23:24:01,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:24:01,410 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:24:01,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:24:01,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:24:01,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:24:01,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:24:01" (1/1) ... [2019-11-23 23:24:01,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee337c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01, skipping insertion in model container [2019-11-23 23:24:01,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:24:01" (1/1) ... [2019-11-23 23:24:01,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:24:01,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:24:01,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:24:01,676 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:24:01,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:24:01,824 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:24:01,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01 WrapperNode [2019-11-23 23:24:01,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:24:01,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:24:01,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:24:01,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:24:01,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01" (1/1) ... [2019-11-23 23:24:01,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01" (1/1) ... [2019-11-23 23:24:01,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:24:01,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:24:01,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:24:01,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:24:01,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01" (1/1) ... [2019-11-23 23:24:01,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01" (1/1) ... [2019-11-23 23:24:01,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01" (1/1) ... [2019-11-23 23:24:01,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01" (1/1) ... [2019-11-23 23:24:01,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01" (1/1) ... [2019-11-23 23:24:01,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01" (1/1) ... [2019-11-23 23:24:01,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01" (1/1) ... [2019-11-23 23:24:01,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:24:01,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:24:01,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:24:01,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:24:01,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01" (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 23:24:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:24:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:24:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:24:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:24:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:24:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:24:02,621 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:24:02,622 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-23 23:24:02,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:24:02 BoogieIcfgContainer [2019-11-23 23:24:02,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:24:02,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:24:02,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:24:02,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:24:02,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:24:01" (1/3) ... [2019-11-23 23:24:02,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71218647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:24:02, skipping insertion in model container [2019-11-23 23:24:02,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:01" (2/3) ... [2019-11-23 23:24:02,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71218647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:24:02, skipping insertion in model container [2019-11-23 23:24:02,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:24:02" (3/3) ... [2019-11-23 23:24:02,632 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2019-11-23 23:24:02,642 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:24:02,650 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:24:02,661 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:24:02,686 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:24:02,687 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:24:02,687 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:24:02,687 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:24:02,687 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:24:02,688 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:24:02,688 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:24:02,688 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:24:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-23 23:24:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 23:24:02,711 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:24:02,712 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:24:02,712 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:24:02,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:24:02,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1435717149, now seen corresponding path program 1 times [2019-11-23 23:24:02,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:24:02,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407236582] [2019-11-23 23:24:02,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:24:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:24:03,043 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 23:24:03,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407236582] [2019-11-23 23:24:03,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:24:03,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 23:24:03,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361473363] [2019-11-23 23:24:03,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:24:03,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:24:03,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:24:03,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:24:03,074 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-23 23:24:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:24:03,175 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2019-11-23 23:24:03,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:24:03,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-23 23:24:03,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:24:03,189 INFO L225 Difference]: With dead ends: 30 [2019-11-23 23:24:03,190 INFO L226 Difference]: Without dead ends: 13 [2019-11-23 23:24:03,194 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:24:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-23 23:24:03,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-23 23:24:03,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-23 23:24:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2019-11-23 23:24:03,231 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 10 [2019-11-23 23:24:03,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:24:03,231 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-11-23 23:24:03,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:24:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2019-11-23 23:24:03,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 23:24:03,232 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:24:03,232 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:24:03,233 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:24:03,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:24:03,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1944706433, now seen corresponding path program 1 times [2019-11-23 23:24:03,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:24:03,234 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682860306] [2019-11-23 23:24:03,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:24:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:24:03,367 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 23:24:03,368 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682860306] [2019-11-23 23:24:03,368 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598397298] [2019-11-23 23:24:03,368 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 23:24:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:24:03,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 23:24:03,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:24:03,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:24:03,507 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 23:24:03,507 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:24:03,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 23:24:03,565 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:24:03,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:24:03,603 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 23:24:03,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [743081422] [2019-11-23 23:24:03,645 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-23 23:24:03,645 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:24:03,654 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:24:03,664 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:24:03,664 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:24:03,880 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:04,087 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:04,094 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:04,561 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:04,723 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:04,733 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:04,931 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:06,167 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:06,176 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:07,602 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:07,613 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:07,804 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:10,616 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:11,394 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:11,408 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:13,978 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:15,814 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:15,825 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:16,109 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:16,167 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:16,175 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:16,181 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:27,771 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 354 [2019-11-23 23:24:28,896 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:28,916 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:28,938 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:29,035 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:29,047 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:29,117 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:30,329 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:34,124 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 416 DAG size of output: 402 [2019-11-23 23:24:38,775 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:38,808 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:42,220 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:42,241 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:42,262 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:42,355 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:44,814 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:45,216 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:45,323 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:45,328 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:45,334 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:45,454 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:45,460 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:45,465 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:45,533 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:46,911 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:48,330 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:49,928 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:52,515 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:52,533 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:52,553 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:52,573 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:52,594 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:52,607 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:52,624 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:52,640 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:56,092 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:56,787 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:57,129 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:24:58,772 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:00,367 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:00,381 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:00,395 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:00,412 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:00,428 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:00,444 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:00,459 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:00,475 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:00,492 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:00,507 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:00,519 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:02,543 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:02,829 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:04,111 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:05,696 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:06,884 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,392 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,406 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,421 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,433 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,448 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,463 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,477 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,490 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,503 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,517 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,530 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,540 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,550 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,561 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,804 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,862 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,874 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:07,880 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,071 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,102 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,129 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,158 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,183 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,201 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,229 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,259 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,284 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,313 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,342 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,377 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,402 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,429 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,452 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:08,600 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 223 [2019-11-23 23:25:11,289 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:11,404 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:11,602 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:11,721 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:25:12,251 WARN L227 Elim1Store]: Array PQE input equivalent to false