/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_init8_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:10:58,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:10:58,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:10:58,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:10:58,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:10:58,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:10:58,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:10:58,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:10:58,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:10:58,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:10:58,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:10:58,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:10:58,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:10:58,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:10:58,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:10:58,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:10:58,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:10:58,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:10:58,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:10:58,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:10:58,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:10:58,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:10:58,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:10:58,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:10:58,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:10:58,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 23:10:58,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 23:10:58,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 23:10:58,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 23:10:58,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 23:10:58,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 23:10:58,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 23:10:58,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 23:10:58,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:10:58,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:10:58,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:10:58,233 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 23:10:58,268 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:10:58,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:10:58,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:10:58,269 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:10:58,270 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:10:58,270 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:10:58,270 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:10:58,270 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:10:58,270 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:10:58,275 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:10:58,275 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:10:58,275 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:10:58,275 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:10:58,276 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:10:58,276 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:10:58,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:10:58,279 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:10:58,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:10:58,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:10:58,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:10:58,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:10:58,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:10:58,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:10:58,280 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:10:58,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:10:58,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:10:58,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:10:58,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:10:58,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:10:58,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:10:58,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:10:58,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:10:58,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:10:58,283 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:10:58,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:10:58,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:10:58,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:10:58,284 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:10:58,573 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:10:58,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:10:58,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:10:58,601 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:10:58,602 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:10:58,602 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init8_ground-2.i [2019-11-23 23:10:58,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd03015af/dab8e6d3b63f47dca92ef920fd515ddd/FLAG3556ebec9 [2019-11-23 23:10:59,171 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:10:59,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init8_ground-2.i [2019-11-23 23:10:59,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd03015af/dab8e6d3b63f47dca92ef920fd515ddd/FLAG3556ebec9 [2019-11-23 23:10:59,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd03015af/dab8e6d3b63f47dca92ef920fd515ddd [2019-11-23 23:10:59,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:10:59,575 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:10:59,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:10:59,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:10:59,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:10:59,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:10:59" (1/1) ... [2019-11-23 23:10:59,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf95e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59, skipping insertion in model container [2019-11-23 23:10:59,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:10:59" (1/1) ... [2019-11-23 23:10:59,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:10:59,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:10:59,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:10:59,851 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:10:59,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:10:59,973 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:10:59,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59 WrapperNode [2019-11-23 23:10:59,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:10:59,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:10:59,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:10:59,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:10:59,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59" (1/1) ... [2019-11-23 23:11:00,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59" (1/1) ... [2019-11-23 23:11:00,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:11:00,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:11:00,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:11:00,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:11:00,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59" (1/1) ... [2019-11-23 23:11:00,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59" (1/1) ... [2019-11-23 23:11:00,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59" (1/1) ... [2019-11-23 23:11:00,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59" (1/1) ... [2019-11-23 23:11:00,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59" (1/1) ... [2019-11-23 23:11:00,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59" (1/1) ... [2019-11-23 23:11:00,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59" (1/1) ... [2019-11-23 23:11:00,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:11:00,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:11:00,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:11:00,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:11:00,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59" (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 23:11:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:11:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:11:00,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:11:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:11:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:11:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:11:00,629 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:11:00,629 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-23 23:11:00,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:11:00 BoogieIcfgContainer [2019-11-23 23:11:00,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:11:00,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:11:00,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:11:00,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:11:00,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:10:59" (1/3) ... [2019-11-23 23:11:00,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea92477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:11:00, skipping insertion in model container [2019-11-23 23:11:00,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:59" (2/3) ... [2019-11-23 23:11:00,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea92477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:11:00, skipping insertion in model container [2019-11-23 23:11:00,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:11:00" (3/3) ... [2019-11-23 23:11:00,639 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-2.i [2019-11-23 23:11:00,649 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:11:00,656 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:11:00,665 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:11:00,688 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:11:00,688 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:11:00,688 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:11:00,688 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:11:00,689 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:11:00,689 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:11:00,689 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:11:00,689 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:11:00,704 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-23 23:11:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 23:11:00,711 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:11:00,712 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:11:00,712 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:11:00,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:11:00,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1712107607, now seen corresponding path program 1 times [2019-11-23 23:11:00,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:11:00,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253828681] [2019-11-23 23:11:00,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:11:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:11:00,883 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 23:11:00,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253828681] [2019-11-23 23:11:00,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:11:00,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:11:00,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361164803] [2019-11-23 23:11:00,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:11:00,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:11:00,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:11:00,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:11:00,904 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-23 23:11:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:11:01,004 INFO L93 Difference]: Finished difference Result 36 states and 61 transitions. [2019-11-23 23:11:01,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:11:01,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-23 23:11:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:11:01,017 INFO L225 Difference]: With dead ends: 36 [2019-11-23 23:11:01,017 INFO L226 Difference]: Without dead ends: 22 [2019-11-23 23:11:01,021 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 23:11:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-23 23:11:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-23 23:11:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-23 23:11:01,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2019-11-23 23:11:01,068 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 12 [2019-11-23 23:11:01,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:11:01,069 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2019-11-23 23:11:01,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:11:01,070 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2019-11-23 23:11:01,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-23 23:11:01,071 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:11:01,071 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:11:01,071 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:11:01,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:11:01,072 INFO L82 PathProgramCache]: Analyzing trace with hash -271410445, now seen corresponding path program 1 times [2019-11-23 23:11:01,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:11:01,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524297033] [2019-11-23 23:11:01,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:11:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:11:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-23 23:11:01,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524297033] [2019-11-23 23:11:01,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722629563] [2019-11-23 23:11:01,156 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 23:11:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:11:01,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:11:01,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:11:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-23 23:11:01,269 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:11:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-23 23:11:01,294 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2082499414] [2019-11-23 23:11:01,320 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-11-23 23:11:01,320 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:11:01,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:11:01,334 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:11:01,334 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:11:56,521 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 314 [2019-11-23 23:11:59,059 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2019-11-23 23:12:01,567 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2019-11-23 23:12:04,029 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 332 [2019-11-23 23:12:04,331 WARN L192 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 330 [2019-11-23 23:12:09,090 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2019-11-23 23:12:09,200 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 337 [2019-11-23 23:12:11,466 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2019-11-23 23:12:13,929 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-23 23:12:16,418 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 353 [2019-11-23 23:12:16,528 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 345 [2019-11-23 23:12:19,357 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 356 DAG size of output: 352 [2019-11-23 23:12:19,584 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 355 [2019-11-23 23:12:22,157 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 359 [2019-11-23 23:12:25,080 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 363 [2019-11-23 23:12:27,765 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 366 [2019-11-23 23:12:30,378 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 369