/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/heap-data/process_queue.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 00:37:34,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 00:37:34,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 00:37:34,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 00:37:34,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 00:37:34,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 00:37:34,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 00:37:34,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 00:37:34,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 00:37:34,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 00:37:34,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 00:37:34,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 00:37:34,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 00:37:34,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 00:37:34,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 00:37:34,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 00:37:34,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 00:37:34,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 00:37:34,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 00:37:34,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 00:37:34,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 00:37:34,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 00:37:34,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 00:37:34,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 00:37:34,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 00:37:34,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 00:37:34,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 00:37:34,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 00:37:34,305 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 [2019-11-24 00:37:34,321 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 00:37:34,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 00:37:34,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 00:37:34,322 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 00:37:34,323 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 00:37:34,323 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 00:37:34,323 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 00:37:34,323 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 00:37:34,323 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 00:37:34,323 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 00:37:34,324 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 00:37:34,324 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 00:37:34,324 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 00:37:34,324 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 00:37:34,324 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 00:37:34,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 00:37:34,325 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 00:37:34,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 00:37:34,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 00:37:34,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 00:37:34,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 00:37:34,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 00:37:34,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 00:37:34,327 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 00:37:34,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 00:37:34,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 00:37:34,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 00:37:34,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 00:37:34,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 00:37:34,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 00:37:34,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 00:37:34,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 00:37:34,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 00:37:34,329 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 00:37:34,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 00:37:34,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 00:37:34,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 00:37:34,329 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 00:37:34,607 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 00:37:34,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 00:37:34,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 00:37:34,624 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 00:37:34,625 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 00:37:34,626 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/process_queue.i [2019-11-24 00:37:34,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cd4d93d/f584e553d6354f7b80d8d49f0eee1850/FLAG737f9d85a [2019-11-24 00:37:35,302 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 00:37:35,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/process_queue.i [2019-11-24 00:37:35,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cd4d93d/f584e553d6354f7b80d8d49f0eee1850/FLAG737f9d85a [2019-11-24 00:37:35,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cd4d93d/f584e553d6354f7b80d8d49f0eee1850 [2019-11-24 00:37:35,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 00:37:35,615 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 00:37:35,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 00:37:35,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 00:37:35,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 00:37:35,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:37:35" (1/1) ... [2019-11-24 00:37:35,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314f6940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:35, skipping insertion in model container [2019-11-24 00:37:35,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:37:35" (1/1) ... [2019-11-24 00:37:35,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 00:37:35,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 00:37:36,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 00:37:36,160 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 00:37:36,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 00:37:36,268 INFO L208 MainTranslator]: Completed translation [2019-11-24 00:37:36,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:36 WrapperNode [2019-11-24 00:37:36,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 00:37:36,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 00:37:36,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 00:37:36,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 00:37:36,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:36" (1/1) ... [2019-11-24 00:37:36,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:36" (1/1) ... [2019-11-24 00:37:36,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 00:37:36,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 00:37:36,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 00:37:36,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 00:37:36,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:36" (1/1) ... [2019-11-24 00:37:36,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:36" (1/1) ... [2019-11-24 00:37:36,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:36" (1/1) ... [2019-11-24 00:37:36,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:36" (1/1) ... [2019-11-24 00:37:36,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:36" (1/1) ... [2019-11-24 00:37:36,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:36" (1/1) ... [2019-11-24 00:37:36,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:36" (1/1) ... [2019-11-24 00:37:36,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 00:37:36,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 00:37:36,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 00:37:36,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 00:37:36,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:36" (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 [2019-11-24 00:37:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 00:37:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 00:37:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 00:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 00:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 00:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 00:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 00:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 00:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 00:37:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 00:37:37,173 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 00:37:37,174 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-24 00:37:37,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:37:37 BoogieIcfgContainer [2019-11-24 00:37:37,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 00:37:37,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 00:37:37,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 00:37:37,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 00:37:37,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:37:35" (1/3) ... [2019-11-24 00:37:37,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233f24a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:37:37, skipping insertion in model container [2019-11-24 00:37:37,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:36" (2/3) ... [2019-11-24 00:37:37,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233f24a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:37:37, skipping insertion in model container [2019-11-24 00:37:37,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:37:37" (3/3) ... [2019-11-24 00:37:37,187 INFO L109 eAbstractionObserver]: Analyzing ICFG process_queue.i [2019-11-24 00:37:37,197 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 00:37:37,204 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 00:37:37,213 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 00:37:37,240 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 00:37:37,240 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 00:37:37,240 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 00:37:37,240 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 00:37:37,241 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 00:37:37,241 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 00:37:37,241 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 00:37:37,241 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 00:37:37,257 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-24 00:37:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 00:37:37,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:37:37,270 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 00:37:37,271 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:37:37,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:37:37,277 INFO L82 PathProgramCache]: Analyzing trace with hash 933439112, now seen corresponding path program 1 times [2019-11-24 00:37:37,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:37:37,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497418093] [2019-11-24 00:37:37,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:37:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:37:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 00:37:37,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497418093] [2019-11-24 00:37:37,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 00:37:37,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 00:37:37,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481885883] [2019-11-24 00:37:37,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 00:37:37,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 00:37:37,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 00:37:37,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 00:37:37,740 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 6 states. [2019-11-24 00:37:38,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 00:37:38,234 INFO L93 Difference]: Finished difference Result 61 states and 92 transitions. [2019-11-24 00:37:38,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 00:37:38,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-24 00:37:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 00:37:38,249 INFO L225 Difference]: With dead ends: 61 [2019-11-24 00:37:38,250 INFO L226 Difference]: Without dead ends: 42 [2019-11-24 00:37:38,253 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-24 00:37:38,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-24 00:37:38,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2019-11-24 00:37:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-24 00:37:38,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2019-11-24 00:37:38,288 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 8 [2019-11-24 00:37:38,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 00:37:38,289 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2019-11-24 00:37:38,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 00:37:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2019-11-24 00:37:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 00:37:38,290 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:37:38,290 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 00:37:38,290 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:37:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:37:38,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1044359358, now seen corresponding path program 1 times [2019-11-24 00:37:38,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:37:38,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315215997] [2019-11-24 00:37:38,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:37:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:37:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 00:37:38,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315215997] [2019-11-24 00:37:38,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 00:37:38,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 00:37:38,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571969661] [2019-11-24 00:37:38,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 00:37:38,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 00:37:38,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 00:37:38,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 00:37:38,359 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand 4 states. [2019-11-24 00:37:38,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 00:37:38,496 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2019-11-24 00:37:38,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 00:37:38,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-24 00:37:38,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 00:37:38,498 INFO L225 Difference]: With dead ends: 65 [2019-11-24 00:37:38,498 INFO L226 Difference]: Without dead ends: 35 [2019-11-24 00:37:38,499 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 00:37:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-24 00:37:38,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2019-11-24 00:37:38,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-24 00:37:38,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-24 00:37:38,507 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 9 [2019-11-24 00:37:38,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 00:37:38,507 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-24 00:37:38,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 00:37:38,507 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-24 00:37:38,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 00:37:38,508 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:37:38,508 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 00:37:38,509 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:37:38,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:37:38,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1824744355, now seen corresponding path program 1 times [2019-11-24 00:37:38,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:37:38,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605519411] [2019-11-24 00:37:38,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:37:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:37:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 00:37:38,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605519411] [2019-11-24 00:37:38,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396249196] [2019-11-24 00:37:38,701 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 [2019-11-24 00:37:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:37:38,788 WARN L253 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 58 conjunts are in the unsatisfiable core [2019-11-24 00:37:38,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 00:37:38,898 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:38,898 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-24 00:37:38,899 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 00:37:38,946 INFO L567 ElimStorePlain]: treesize reduction 10, result has 76.2 percent of original size [2019-11-24 00:37:38,948 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-24 00:37:38,948 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:32 [2019-11-24 00:37:39,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:37:39,118 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:39,118 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 163 treesize of output 181 [2019-11-24 00:37:39,120 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 00:37:39,146 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:39,147 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 165 [2019-11-24 00:37:39,148 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-24 00:37:39,524 WARN L192 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-11-24 00:37:39,525 INFO L567 ElimStorePlain]: treesize reduction 160, result has 48.7 percent of original size [2019-11-24 00:37:39,529 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_34|, |v_#memory_$Pointer$.offset_33|], 2=[|v_#memory_$Pointer$.base_35|, |v_#memory_$Pointer$.offset_35|], 8=[|v_#memory_$Pointer$.offset_34|, |v_#memory_$Pointer$.base_33|]} [2019-11-24 00:37:39,540 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-24 00:37:39,645 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-11-24 00:37:39,646 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:39,656 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-24 00:37:39,722 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:39,748 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2019-11-24 00:37:39,749 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-24 00:37:39,793 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:39,808 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2019-11-24 00:37:39,809 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-24 00:37:39,864 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:39,883 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2019-11-24 00:37:39,885 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-11-24 00:37:39,918 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:39,927 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2019-11-24 00:37:39,928 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-11-24 00:37:39,948 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:39,949 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 6 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-24 00:37:39,950 INFO L221 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:325, output treesize:41 [2019-11-24 00:37:40,062 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-24 00:37:40,064 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-24 00:37:40,067 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:40,082 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 37 [2019-11-24 00:37:40,087 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-24 00:37:40,111 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:40,118 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:40,118 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2019-11-24 00:37:40,119 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-24 00:37:40,126 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:40,126 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-24 00:37:40,127 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:72, output treesize:7 [2019-11-24 00:37:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 00:37:40,130 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 00:37:40,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:37:40,165 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_34|, |v_#memory_$Pointer$.offset_33|], 6=[|v_#memory_$Pointer$.offset_34|, |v_#memory_$Pointer$.base_33|]} [2019-11-24 00:37:40,171 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-24 00:37:40,177 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-24 00:37:40,260 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:40,266 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-24 00:37:40,272 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-24 00:37:40,337 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:40,344 INFO L496 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-24 00:37:40,351 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-24 00:37:40,388 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:40,394 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-11-24 00:37:40,400 INFO L496 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-24 00:37:40,426 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:37:40,428 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2019-11-24 00:37:40,428 INFO L221 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:221, output treesize:161 [2019-11-24 00:37:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 00:37:40,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2069604627] [2019-11-24 00:37:40,505 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-24 00:37:40,505 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 00:37:40,511 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 00:37:40,518 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 00:37:40,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 00:37:41,351 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 00:37:41,729 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-11-24 00:37:42,002 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2019-11-24 00:37:42,998 WARN L192 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 115 [2019-11-24 00:37:43,432 WARN L192 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 111 [2019-11-24 00:37:43,859 WARN L192 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 106 [2019-11-24 00:37:43,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-24 00:37:43,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 5, 5] total 18 [2019-11-24 00:37:43,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341535685] [2019-11-24 00:37:43,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-24 00:37:43,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 00:37:43,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-24 00:37:43,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-11-24 00:37:43,865 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 9 states. [2019-11-24 00:37:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 00:37:44,130 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2019-11-24 00:37:44,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-24 00:37:44,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-11-24 00:37:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 00:37:44,133 INFO L225 Difference]: With dead ends: 62 [2019-11-24 00:37:44,133 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 00:37:44,134 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-11-24 00:37:44,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 00:37:44,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2019-11-24 00:37:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-24 00:37:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2019-11-24 00:37:44,142 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 11 [2019-11-24 00:37:44,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 00:37:44,143 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2019-11-24 00:37:44,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-24 00:37:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2019-11-24 00:37:44,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 00:37:44,144 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:37:44,144 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 00:37:44,347 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 00:37:44,348 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:37:44,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:37:44,348 INFO L82 PathProgramCache]: Analyzing trace with hash 165732356, now seen corresponding path program 1 times [2019-11-24 00:37:44,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:37:44,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988624780] [2019-11-24 00:37:44,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:37:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:37:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 00:37:44,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988624780] [2019-11-24 00:37:44,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091784246] [2019-11-24 00:37:44,572 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 [2019-11-24 00:37:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:37:44,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 59 conjunts are in the unsatisfiable core [2019-11-24 00:37:44,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 00:37:45,412 WARN L192 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-11-24 00:37:45,607 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-11-24 00:37:45,807 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-24 00:37:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 00:37:46,122 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 00:37:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 00:37:46,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1549736050] [2019-11-24 00:37:46,350 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-24 00:37:46,350 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 00:37:46,351 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 00:37:46,351 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 00:37:46,351 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 00:37:49,501 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 00:37:49,559 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 00:37:58,335 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= ULTIMATE.start_main_~new_process~0.base |ULTIMATE.start_append_to_queue_#in~q.base|) [2019-11-24 00:38:00,395 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 12 (select |#length| |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:38:02,448 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 12 (select |#length| |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:38:04,492 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 12 (select |#length| |ULTIMATE.start_main_#t~malloc16.base|)) [2019-11-24 00:38:06,536 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 12 (select |#length| |ULTIMATE.start_main_#t~malloc16.base|)) [2019-11-24 00:38:06,894 WARN L192 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 1495 [2019-11-24 00:38:13,091 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_append_to_queue_#in~q.base| |ULTIMATE.start_check_queue_#in~q.base|) [2019-11-24 00:38:15,120 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= ULTIMATE.start_main_~new_process~0.base |ULTIMATE.start_append_to_queue_#in~q.base|) [2019-11-24 00:38:17,173 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= ULTIMATE.start_main_~new_process~0.base |ULTIMATE.start_check_queue_#in~q.base|) [2019-11-24 00:38:19,197 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select v_prenex_39 (select (select v_prenex_40 |ULTIMATE.start_main_~#queue~0.base|) |ULTIMATE.start_main_~#queue~0.offset|)) (select v_prenex_39 |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:38:21,213 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select v_prenex_39 (select (select v_prenex_40 |ULTIMATE.start_main_~#queue~0.base|) |ULTIMATE.start_main_~#queue~0.offset|)) (select v_prenex_39 |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:38:23,248 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 12 (select v_prenex_39 |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:38:25,255 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 12 (select v_prenex_39 |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:38:27,284 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 12 (select v_prenex_39 (select (select v_prenex_40 |ULTIMATE.start_main_~#queue~0.base|) |ULTIMATE.start_main_~#queue~0.offset|))) [2019-11-24 00:38:29,335 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 12 (select v_prenex_39 (select (select v_prenex_40 |ULTIMATE.start_main_~#queue~0.base|) |ULTIMATE.start_main_~#queue~0.offset|))) [2019-11-24 00:38:31,371 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 12 (select |#length| |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:38:33,416 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 12 (select |#length| |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:38:35,450 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select |#length| (select (select v_prenex_40 |ULTIMATE.start_main_~#queue~0.base|) |ULTIMATE.start_main_~#queue~0.offset|)) 12) [2019-11-24 00:38:37,498 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select |#length| (select (select v_prenex_40 |ULTIMATE.start_main_~#queue~0.base|) |ULTIMATE.start_main_~#queue~0.offset|)) 12) [2019-11-24 00:38:39,532 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 12 (select |#length| |ULTIMATE.start_main_#t~malloc16.base|)) [2019-11-24 00:38:41,559 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 12 (select |#length| |ULTIMATE.start_main_#t~malloc16.base|)) [2019-11-24 00:38:41,656 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 00:38:41,914 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 1489 [2019-11-24 00:38:48,086 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_append_to_queue_#in~q.base| |ULTIMATE.start_check_queue_#in~q.base|) [2019-11-24 00:38:50,113 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= ULTIMATE.start_main_~new_process~0.base |ULTIMATE.start_append_to_queue_#in~q.base|) [2019-11-24 00:38:52,133 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= ULTIMATE.start_main_~new_process~0.base |ULTIMATE.start_check_queue_#in~q.base|) [2019-11-24 00:38:54,160 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select v_prenex_105 (select (select v_prenex_106 |ULTIMATE.start_main_~#queue~0.base|) |ULTIMATE.start_main_~#queue~0.offset|)) (select v_prenex_105 |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:38:56,212 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select v_prenex_105 (select (select v_prenex_106 |ULTIMATE.start_main_~#queue~0.base|) |ULTIMATE.start_main_~#queue~0.offset|)) (select v_prenex_105 |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:38:58,227 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 12 (select v_prenex_105 |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:39:00,233 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 12 (select v_prenex_105 |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:39:02,252 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select v_prenex_105 (select (select v_prenex_106 |ULTIMATE.start_main_~#queue~0.base|) |ULTIMATE.start_main_~#queue~0.offset|)) 12) [2019-11-24 00:39:04,282 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select v_prenex_105 (select (select v_prenex_106 |ULTIMATE.start_main_~#queue~0.base|) |ULTIMATE.start_main_~#queue~0.offset|)) 12) [2019-11-24 00:39:06,293 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 12 (select |#length| |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:39:08,337 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 12 (select |#length| |ULTIMATE.start_main_~#queue~0.base|)) [2019-11-24 00:39:10,377 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 12 (select |#length| (select (select v_prenex_106 |ULTIMATE.start_main_~#queue~0.base|) |ULTIMATE.start_main_~#queue~0.offset|))) [2019-11-24 00:39:12,402 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 12 (select |#length| (select (select v_prenex_106 |ULTIMATE.start_main_~#queue~0.base|) |ULTIMATE.start_main_~#queue~0.offset|))) [2019-11-24 00:39:14,434 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 12 (select |#length| |ULTIMATE.start_main_#t~malloc16.base|)) [2019-11-24 00:39:16,446 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 12 (select |#length| |ULTIMATE.start_main_#t~malloc16.base|)) [2019-11-24 00:39:16,533 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 00:39:16,769 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 1483 [2019-11-24 00:39:16,822 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 00:39:17,027 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 1374 [2019-11-24 00:39:17,107 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 00:39:17,309 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 1265 [2019-11-24 00:39:17,370 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 00:39:17,452 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 00:39:17,701 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 1135 [2019-11-24 00:39:17,751 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 00:39:17,796 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 00:39:17,927 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 1005