/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-crafted/bor5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:53:24,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:53:24,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:53:24,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:53:24,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:53:24,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:53:24,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:53:24,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:53:24,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:53:24,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:53:24,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:53:24,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:53:24,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:53:24,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:53:24,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:53:24,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:53:24,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:53:24,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:53:24,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:53:24,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:53:24,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:53:24,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:53:24,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:53:24,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:53:24,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:53:24,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:53:24,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:53:24,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:53:24,713 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 22:53:24,747 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:53:24,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:53:24,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 22:53:24,749 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 22:53:24,752 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 22:53:24,752 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 22:53:24,752 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 22:53:24,752 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 22:53:24,753 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 22:53:24,753 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 22:53:24,753 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 22:53:24,753 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 22:53:24,753 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 22:53:24,754 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 22:53:24,756 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 22:53:24,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:53:24,757 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:53:24,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:53:24,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:53:24,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:53:24,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:53:24,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:53:24,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:53:24,758 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:53:24,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:53:24,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:53:24,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:53:24,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:53:24,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:53:24,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:53:24,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:53:24,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:53:24,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:53:24,763 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 22:53:24,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:53:24,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:53:24,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:53:24,764 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 22:53:25,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:53:25,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:53:25,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:53:25,090 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:53:25,090 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:53:25,091 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor5.i [2019-11-23 22:53:25,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65883fc1e/b77d9bcc211f48cc96c3b155b256e50c/FLAG00a8c20ec [2019-11-23 22:53:25,608 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:53:25,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/bor5.i [2019-11-23 22:53:25,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65883fc1e/b77d9bcc211f48cc96c3b155b256e50c/FLAG00a8c20ec [2019-11-23 22:53:25,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65883fc1e/b77d9bcc211f48cc96c3b155b256e50c [2019-11-23 22:53:25,981 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:53:25,983 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:53:25,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:53:25,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:53:25,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:53:25,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:53:25" (1/1) ... [2019-11-23 22:53:25,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb6ee21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:25, skipping insertion in model container [2019-11-23 22:53:25,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:53:25" (1/1) ... [2019-11-23 22:53:25,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:53:26,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:53:26,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:53:26,225 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:53:26,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:53:26,266 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:53:26,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:26 WrapperNode [2019-11-23 22:53:26,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:53:26,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:53:26,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:53:26,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:53:26,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:26" (1/1) ... [2019-11-23 22:53:26,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:26" (1/1) ... [2019-11-23 22:53:26,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:53:26,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:53:26,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:53:26,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:53:26,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:26" (1/1) ... [2019-11-23 22:53:26,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:26" (1/1) ... [2019-11-23 22:53:26,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:26" (1/1) ... [2019-11-23 22:53:26,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:26" (1/1) ... [2019-11-23 22:53:26,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:26" (1/1) ... [2019-11-23 22:53:26,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:26" (1/1) ... [2019-11-23 22:53:26,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:26" (1/1) ... [2019-11-23 22:53:26,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:53:26,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:53:26,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:53:26,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:53:26,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:26" (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 22:53:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:53:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:53:26,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:53:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:53:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 22:53:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 22:53:27,023 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:53:27,023 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-23 22:53:27,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:53:27 BoogieIcfgContainer [2019-11-23 22:53:27,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:53:27,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:53:27,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:53:27,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:53:27,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:53:25" (1/3) ... [2019-11-23 22:53:27,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248fc216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:53:27, skipping insertion in model container [2019-11-23 22:53:27,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:53:26" (2/3) ... [2019-11-23 22:53:27,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248fc216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:53:27, skipping insertion in model container [2019-11-23 22:53:27,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:53:27" (3/3) ... [2019-11-23 22:53:27,033 INFO L109 eAbstractionObserver]: Analyzing ICFG bor5.i [2019-11-23 22:53:27,041 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:53:27,048 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:53:27,060 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:53:27,080 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:53:27,080 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:53:27,080 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:53:27,081 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:53:27,081 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:53:27,081 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:53:27,081 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:53:27,082 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:53:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-23 22:53:27,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:53:27,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:53:27,103 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:53:27,103 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:53:27,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:53:27,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1047258251, now seen corresponding path program 1 times [2019-11-23 22:53:27,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:53:27,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199684694] [2019-11-23 22:53:27,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:53:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:53:27,322 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 22:53:27,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199684694] [2019-11-23 22:53:27,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:53:27,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:53:27,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51556915] [2019-11-23 22:53:27,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:53:27,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:53:27,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:53:27,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:53:27,358 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2019-11-23 22:53:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:53:27,440 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2019-11-23 22:53:27,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:53:27,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-23 22:53:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:53:27,455 INFO L225 Difference]: With dead ends: 24 [2019-11-23 22:53:27,455 INFO L226 Difference]: Without dead ends: 11 [2019-11-23 22:53:27,461 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:53:27,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-23 22:53:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-23 22:53:27,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-23 22:53:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2019-11-23 22:53:27,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 9 [2019-11-23 22:53:27,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:53:27,505 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-11-23 22:53:27,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:53:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2019-11-23 22:53:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:53:27,506 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:53:27,506 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:53:27,507 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:53:27,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:53:27,507 INFO L82 PathProgramCache]: Analyzing trace with hash -493215443, now seen corresponding path program 1 times [2019-11-23 22:53:27,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:53:27,508 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000285050] [2019-11-23 22:53:27,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:53:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:53:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:53:27,651 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000285050] [2019-11-23 22:53:27,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:53:27,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:53:27,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141984391] [2019-11-23 22:53:27,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:53:27,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:53:27,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:53:27,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:53:27,655 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand 4 states. [2019-11-23 22:53:27,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:53:27,716 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2019-11-23 22:53:27,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:53:27,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-23 22:53:27,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:53:27,717 INFO L225 Difference]: With dead ends: 20 [2019-11-23 22:53:27,718 INFO L226 Difference]: Without dead ends: 14 [2019-11-23 22:53:27,719 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 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 22:53:27,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-23 22:53:27,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-23 22:53:27,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 22:53:27,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2019-11-23 22:53:27,724 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 10 [2019-11-23 22:53:27,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:53:27,724 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-23 22:53:27,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:53:27,724 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2019-11-23 22:53:27,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 22:53:27,725 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:53:27,725 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:53:27,725 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:53:27,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:53:27,726 INFO L82 PathProgramCache]: Analyzing trace with hash 33156354, now seen corresponding path program 1 times [2019-11-23 22:53:27,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:53:27,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733905110] [2019-11-23 22:53:27,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:53:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:53:27,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:53:27,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733905110] [2019-11-23 22:53:27,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:53:27,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:53:27,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999471588] [2019-11-23 22:53:27,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:53:27,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:53:27,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:53:27,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:53:27,806 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 4 states. [2019-11-23 22:53:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:53:27,856 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2019-11-23 22:53:27,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:53:27,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-23 22:53:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:53:27,858 INFO L225 Difference]: With dead ends: 20 [2019-11-23 22:53:27,858 INFO L226 Difference]: Without dead ends: 15 [2019-11-23 22:53:27,859 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 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 22:53:27,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-23 22:53:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-23 22:53:27,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-23 22:53:27,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-11-23 22:53:27,864 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 13 [2019-11-23 22:53:27,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:53:27,865 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-23 22:53:27,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:53:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2019-11-23 22:53:27,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-23 22:53:27,866 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:53:27,866 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:53:27,866 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:53:27,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:53:27,867 INFO L82 PathProgramCache]: Analyzing trace with hash 523337404, now seen corresponding path program 1 times [2019-11-23 22:53:27,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:53:27,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470760143] [2019-11-23 22:53:27,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:53:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:53:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:53:27,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470760143] [2019-11-23 22:53:27,948 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572786787] [2019-11-23 22:53:27,951 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 22:53:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:53:28,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:53:28,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:53:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:53:28,090 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:53:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:53:28,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [251905506] [2019-11-23 22:53:28,170 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-23 22:53:28,170 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 22:53:28,183 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 22:53:28,190 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 22:53:28,191 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 22:53:43,549 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 210 [2019-11-23 22:53:43,711 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2019-11-23 22:53:43,869 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 213 [2019-11-23 22:53:46,659 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 223 [2019-11-23 22:54:08,598 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2019-11-23 22:54:12,504 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 283 [2019-11-23 22:54:25,287 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-23 22:54:27,530 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 313 [2019-11-23 22:54:29,837 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2019-11-23 22:54:29,950 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 317 [2019-11-23 22:54:30,178 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 320 [2019-11-23 22:54:32,197 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 328 [2019-11-23 22:54:32,320 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 322 [2019-11-23 22:54:32,543 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 324 [2019-11-23 22:54:35,131 WARN L192 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2019-11-23 22:54:35,409 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 329 [2019-11-23 22:54:38,031 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2019-11-23 22:54:38,173 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 332 [2019-11-23 22:54:40,941 WARN L192 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 336 [2019-11-23 22:54:41,315 WARN L192 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 334 [2019-11-23 22:54:44,464 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2019-11-23 22:54:44,603 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 338 [2019-11-23 22:54:46,934 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 343 [2019-11-23 22:54:47,075 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 342 [2019-11-23 22:54:49,539 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 348 [2019-11-23 22:54:49,691 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 343 [2019-11-23 22:54:49,819 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 344 [2019-11-23 22:54:49,925 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 345 [2019-11-23 22:54:52,379 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2019-11-23 22:54:52,499 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 349 [2019-11-23 22:54:55,058 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2019-11-23 22:54:55,185 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 353 DAG size of output: 351 [2019-11-23 22:54:55,322 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2019-11-23 22:54:55,447 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 353 [2019-11-23 22:54:55,581 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2019-11-23 22:54:55,705 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 357