/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/mapsum3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:54:59,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:54:59,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:54:59,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:54:59,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:54:59,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:54:59,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:54:59,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:54:59,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:54:59,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:54:59,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:54:59,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:54:59,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:54:59,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:54:59,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:54:59,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:54:59,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:54:59,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:54:59,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:54:59,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:54:59,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:54:59,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:54:59,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:54:59,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:54:59,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:54:59,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:54:59,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:54:59,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:54:59,470 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 22:54:59,490 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:54:59,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:54:59,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 22:54:59,492 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 22:54:59,492 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 22:54:59,493 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 22:54:59,493 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 22:54:59,493 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 22:54:59,493 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 22:54:59,493 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 22:54:59,494 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 22:54:59,495 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 22:54:59,495 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 22:54:59,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 22:54:59,495 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 22:54:59,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:54:59,497 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:54:59,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:54:59,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:54:59,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:54:59,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:54:59,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:54:59,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:54:59,499 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:54:59,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:54:59,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:54:59,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:54:59,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:54:59,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:54:59,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:54:59,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:54:59,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:54:59,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:54:59,502 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 22:54:59,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:54:59,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:54:59,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:54:59,503 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 22:54:59,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:54:59,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:54:59,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:54:59,806 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:54:59,807 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:54:59,807 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum3.i [2019-11-23 22:54:59,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a1f4634/2185128243f04d3b839c27845740a2e4/FLAG6a29cba03 [2019-11-23 22:55:00,329 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:55:00,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapsum3.i [2019-11-23 22:55:00,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a1f4634/2185128243f04d3b839c27845740a2e4/FLAG6a29cba03 [2019-11-23 22:55:00,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a1f4634/2185128243f04d3b839c27845740a2e4 [2019-11-23 22:55:00,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:55:00,746 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:55:00,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:55:00,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:55:00,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:55:00,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:55:00" (1/1) ... [2019-11-23 22:55:00,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10250dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:00, skipping insertion in model container [2019-11-23 22:55:00,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:55:00" (1/1) ... [2019-11-23 22:55:00,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:55:00,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:55:01,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:55:01,060 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:55:01,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:55:01,124 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:55:01,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01 WrapperNode [2019-11-23 22:55:01,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:55:01,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:55:01,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:55:01,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:55:01,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:55:01,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:55:01,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:55:01,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:55:01,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:55:01,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:55:01,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:55:01,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:55:01,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (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 22:55:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:55:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:55:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:55:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:55:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 22:55:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 22:55:01,940 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:55:01,941 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-23 22:55:01,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:55:01 BoogieIcfgContainer [2019-11-23 22:55:01,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:55:01,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:55:01,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:55:01,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:55:01,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:55:00" (1/3) ... [2019-11-23 22:55:01,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb7dd4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:55:01, skipping insertion in model container [2019-11-23 22:55:01,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (2/3) ... [2019-11-23 22:55:01,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb7dd4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:55:01, skipping insertion in model container [2019-11-23 22:55:01,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:55:01" (3/3) ... [2019-11-23 22:55:01,950 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum3.i [2019-11-23 22:55:01,957 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:55:01,964 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:55:01,975 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:55:01,997 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:55:01,997 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:55:01,997 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:55:01,997 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:55:01,997 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:55:01,998 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:55:01,998 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:55:01,998 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:55:02,010 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-23 22:55:02,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:55:02,017 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:55:02,018 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:55:02,019 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:55:02,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:55:02,025 INFO L82 PathProgramCache]: Analyzing trace with hash -977729615, now seen corresponding path program 1 times [2019-11-23 22:55:02,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:55:02,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417831373] [2019-11-23 22:55:02,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:55:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:02,185 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 22:55:02,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417831373] [2019-11-23 22:55:02,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:55:02,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:55:02,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431026072] [2019-11-23 22:55:02,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:55:02,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:55:02,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:55:02,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:55:02,211 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-23 22:55:02,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:55:02,240 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-11-23 22:55:02,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:55:02,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-23 22:55:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:55:02,251 INFO L225 Difference]: With dead ends: 21 [2019-11-23 22:55:02,251 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 22:55:02,254 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:55:02,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 22:55:02,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 22:55:02,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 22:55:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-11-23 22:55:02,286 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2019-11-23 22:55:02,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:55:02,287 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-23 22:55:02,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:55:02,287 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2019-11-23 22:55:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:55:02,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:55:02,288 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:55:02,288 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:55:02,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:55:02,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1165895748, now seen corresponding path program 1 times [2019-11-23 22:55:02,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:55:02,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706447737] [2019-11-23 22:55:02,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:55:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:02,354 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 22:55:02,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706447737] [2019-11-23 22:55:02,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517370933] [2019-11-23 22:55:02,356 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 22:55:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:02,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-23 22:55:02,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:55:02,480 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 22:55:02,480 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:55:02,502 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 22:55:02,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:55:02,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-23 22:55:02,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028283478] [2019-11-23 22:55:02,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:55:02,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:55:02,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:55:02,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:55:02,507 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2019-11-23 22:55:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:55:02,568 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2019-11-23 22:55:02,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:55:02,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-23 22:55:02,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:55:02,570 INFO L225 Difference]: With dead ends: 22 [2019-11-23 22:55:02,570 INFO L226 Difference]: Without dead ends: 16 [2019-11-23 22:55:02,571 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:55:02,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-23 22:55:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-23 22:55:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-23 22:55:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-11-23 22:55:02,579 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2019-11-23 22:55:02,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:55:02,580 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-23 22:55:02,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:55:02,580 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-11-23 22:55:02,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-23 22:55:02,582 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:55:02,583 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:55:02,787 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:55:02,787 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:55:02,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:55:02,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1510942468, now seen corresponding path program 1 times [2019-11-23 22:55:02,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:55:02,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986210741] [2019-11-23 22:55:02,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:55:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-23 22:55:02,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986210741] [2019-11-23 22:55:02,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369250072] [2019-11-23 22:55:02,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:55:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:02,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-23 22:55:02,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:55:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-23 22:55:02,953 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:55:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-23 22:55:02,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:55:02,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-23 22:55:02,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989435308] [2019-11-23 22:55:02,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:55:02,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:55:02,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:55:02,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:55:02,977 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-11-23 22:55:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:55:02,993 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-23 22:55:02,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:55:02,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-23 22:55:02,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:55:02,995 INFO L225 Difference]: With dead ends: 24 [2019-11-23 22:55:02,995 INFO L226 Difference]: Without dead ends: 18 [2019-11-23 22:55:02,996 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:55:02,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-23 22:55:03,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-23 22:55:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-23 22:55:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-23 22:55:03,002 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2019-11-23 22:55:03,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:55:03,002 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-23 22:55:03,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:55:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-23 22:55:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 22:55:03,003 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:55:03,003 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:55:03,204 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:55:03,205 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:55:03,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:55:03,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1316778556, now seen corresponding path program 1 times [2019-11-23 22:55:03,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:55:03,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666140929] [2019-11-23 22:55:03,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:55:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-23 22:55:03,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666140929] [2019-11-23 22:55:03,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242287204] [2019-11-23 22:55:03,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:55:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:03,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:55:03,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:55:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-23 22:55:03,340 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:55:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-23 22:55:03,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [242600189] [2019-11-23 22:55:03,422 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-23 22:55:03,423 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 22:55:03,433 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 22:55:03,442 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 22:55:03,443 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 22:55:05,100 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 118 [2019-11-23 22:55:15,382 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 174 [2019-11-23 22:56:05,681 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 308 [2019-11-23 22:56:08,062 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 312 [2019-11-23 22:56:08,278 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 310 [2019-11-23 22:56:08,473 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2019-11-23 22:56:08,580 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 309 [2019-11-23 22:56:11,197 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 317 [2019-11-23 22:56:16,187 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 329 [2019-11-23 22:56:20,994 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2019-11-23 22:56:21,108 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 338 [2019-11-23 22:56:23,624 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 345 [2019-11-23 22:56:23,739 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 341 [2019-11-23 22:56:26,381 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 344 [2019-11-23 22:56:28,831 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 351 [2019-11-23 22:56:28,968 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 348 [2019-11-23 22:56:31,478 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2019-11-23 22:56:31,620 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 353 DAG size of output: 349 [2019-11-23 22:56:31,844 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 350