/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-examples/standard_copyInitSum3_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:06:28,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:06:28,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:06:28,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:06:28,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:06:28,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:06:28,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:06:28,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:06:28,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:06:28,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:06:28,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:06:28,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-11-23 23:06:28,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:06:28,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:06:28,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:06:28,604 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 23:06:28,627 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:06:28,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:06:28,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:06:28,629 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:06:28,629 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:06:28,629 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:06:28,630 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:06:28,630 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:06:28,630 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:06:28,630 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:06:28,631 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:06:28,631 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:06:28,632 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:06:28,632 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:06:28,632 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:06:28,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:06:28,634 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:06:28,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:06:28,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:06:28,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:06:28,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:06:28,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:06:28,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:06:28,635 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:06:28,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:06:28,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:06:28,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:06:28,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:06:28,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:06:28,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:06:28,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:06:28,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:06:28,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:06:28,638 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:06:28,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:06:28,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:06:28,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:06:28,639 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:06:28,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:06:28,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:06:28,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:06:28,941 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:06:28,941 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:06:28,942 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInitSum3_ground.i [2019-11-23 23:06:29,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ebc4f983/892a1acf983042958ce38daf61663ba6/FLAGdd073a2ce [2019-11-23 23:06:29,461 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:06:29,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copyInitSum3_ground.i [2019-11-23 23:06:29,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ebc4f983/892a1acf983042958ce38daf61663ba6/FLAGdd073a2ce [2019-11-23 23:06:29,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ebc4f983/892a1acf983042958ce38daf61663ba6 [2019-11-23 23:06:29,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:06:29,862 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:06:29,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:06:29,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:06:29,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:06:29,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:06:29" (1/1) ... [2019-11-23 23:06:29,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c09367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29, skipping insertion in model container [2019-11-23 23:06:29,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:06:29" (1/1) ... [2019-11-23 23:06:29,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:06:29,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:06:30,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:06:30,105 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:06:30,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:06:30,144 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:06:30,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:30 WrapperNode [2019-11-23 23:06:30,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:06:30,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:06:30,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:06:30,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:06:30,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:30" (1/1) ... [2019-11-23 23:06:30,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:30" (1/1) ... [2019-11-23 23:06:30,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:06:30,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:06:30,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:06:30,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:06:30,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:30" (1/1) ... [2019-11-23 23:06:30,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:30" (1/1) ... [2019-11-23 23:06:30,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:30" (1/1) ... [2019-11-23 23:06:30,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:30" (1/1) ... [2019-11-23 23:06:30,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:30" (1/1) ... [2019-11-23 23:06:30,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:30" (1/1) ... [2019-11-23 23:06:30,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:30" (1/1) ... [2019-11-23 23:06:30,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:06:30,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:06:30,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:06:30,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:06:30,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:06:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:06:30,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:06:30,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:06:30,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:06:30,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:06:30,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:06:30,767 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:06:30,768 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-23 23:06:30,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:06:30 BoogieIcfgContainer [2019-11-23 23:06:30,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:06:30,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:06:30,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:06:30,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:06:30,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:06:29" (1/3) ... [2019-11-23 23:06:30,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d3c8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:06:30, skipping insertion in model container [2019-11-23 23:06:30,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:30" (2/3) ... [2019-11-23 23:06:30,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d3c8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:06:30, skipping insertion in model container [2019-11-23 23:06:30,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:06:30" (3/3) ... [2019-11-23 23:06:30,776 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum3_ground.i [2019-11-23 23:06:30,784 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:06:30,793 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:06:30,804 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:06:30,827 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:06:30,827 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:06:30,828 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:06:30,828 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:06:30,828 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:06:30,828 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:06:30,828 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:06:30,829 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:06:30,842 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-23 23:06:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 23:06:30,848 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:06:30,849 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:06:30,850 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:06:30,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:06:30,855 INFO L82 PathProgramCache]: Analyzing trace with hash -133873661, now seen corresponding path program 1 times [2019-11-23 23:06:30,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:06:30,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469785516] [2019-11-23 23:06:30,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:06:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:06:30,995 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 23:06:30,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469785516] [2019-11-23 23:06:30,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:06:30,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:06:30,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535996067] [2019-11-23 23:06:31,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:06:31,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:06:31,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:06:31,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:06:31,020 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-23 23:06:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:06:31,086 INFO L93 Difference]: Finished difference Result 24 states and 37 transitions. [2019-11-23 23:06:31,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:06:31,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-23 23:06:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:06:31,097 INFO L225 Difference]: With dead ends: 24 [2019-11-23 23:06:31,098 INFO L226 Difference]: Without dead ends: 14 [2019-11-23 23:06:31,101 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 23:06:31,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-23 23:06:31,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-23 23:06:31,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 23:06:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2019-11-23 23:06:31,136 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2019-11-23 23:06:31,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:06:31,136 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-23 23:06:31,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:06:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2019-11-23 23:06:31,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 23:06:31,138 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:06:31,138 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:06:31,138 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:06:31,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:06:31,139 INFO L82 PathProgramCache]: Analyzing trace with hash 581818014, now seen corresponding path program 1 times [2019-11-23 23:06:31,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:06:31,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553720663] [2019-11-23 23:06:31,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:06:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:06:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 23:06:31,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553720663] [2019-11-23 23:06:31,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139076346] [2019-11-23 23:06:31,212 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 23:06:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:06:31,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:06:31,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:06:31,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 23:06:31,300 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:06:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 23:06:31,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1368155345] [2019-11-23 23:06:31,346 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-23 23:06:31,346 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:06:31,353 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:06:31,359 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:06:31,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:07:22,430 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 294 [2019-11-23 23:07:33,768 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 315 [2019-11-23 23:07:36,070 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 316 [2019-11-23 23:07:41,352 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 321 [2019-11-23 23:07:41,562 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 323 [2019-11-23 23:07:46,562 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 331 [2019-11-23 23:07:51,919 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 337 [2019-11-23 23:07:54,508 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 339 [2019-11-23 23:07:54,735 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-23 23:07:57,149 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 353 DAG size of output: 351 [2019-11-23 23:07:57,276 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 346 [2019-11-23 23:07:57,519 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 349 [2019-11-23 23:08:00,343 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2019-11-23 23:08:00,492 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 352 [2019-11-23 23:08:00,631 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2019-11-23 23:08:00,737 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 355 [2019-11-23 23:08:03,408 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2019-11-23 23:08:03,528 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 358 [2019-11-23 23:08:03,764 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 360 [2019-11-23 23:08:03,985 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 364