/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/product-lines/email_spec4_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:04:52,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:04:52,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:04:52,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:04:52,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:04:52,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:04:52,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:04:52,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:04:52,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:04:52,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:04:52,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:04:52,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:04:52,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:04:52,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:04:52,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:04:52,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:04:52,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:04:52,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:04:52,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:04:52,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:04:52,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:04:52,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:04:52,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:04:52,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:04:52,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:04:52,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:04:52,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:04:52,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:04:52,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:04:52,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:04:52,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:04:52,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:04:52,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:04:52,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:04:52,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:04:52,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:04:52,288 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 05:04:52,310 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:04:52,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:04:52,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:04:52,312 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:04:52,312 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:04:52,312 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:04:52,313 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:04:52,313 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:04:52,313 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:04:52,313 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:04:52,314 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:04:52,314 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:04:52,315 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:04:52,315 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:04:52,315 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:04:52,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:04:52,317 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:04:52,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:04:52,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:04:52,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:04:52,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:04:52,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:04:52,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:04:52,319 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:04:52,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:04:52,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:04:52,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:04:52,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:04:52,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:04:52,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:04:52,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:04:52,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:04:52,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:04:52,322 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:04:52,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:04:52,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:04:52,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:04:52,323 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:04:52,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:04:52,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:04:52,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:04:52,650 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:04:52,651 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:04:52,651 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product35.cil.c [2019-11-24 05:04:52,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/478796f17/5da649b8c0da4a0eb44ae25c29b7a17a/FLAGf483c1090 [2019-11-24 05:04:53,353 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:04:53,354 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product35.cil.c [2019-11-24 05:04:53,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/478796f17/5da649b8c0da4a0eb44ae25c29b7a17a/FLAGf483c1090 [2019-11-24 05:04:53,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/478796f17/5da649b8c0da4a0eb44ae25c29b7a17a [2019-11-24 05:04:53,563 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:04:53,564 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:04:53,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:04:53,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:04:53,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:04:53,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:04:53" (1/1) ... [2019-11-24 05:04:53,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@719ee9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:53, skipping insertion in model container [2019-11-24 05:04:53,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:04:53" (1/1) ... [2019-11-24 05:04:53,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:04:53,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:04:54,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:04:54,383 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:04:54,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:04:54,635 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:04:54,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:54 WrapperNode [2019-11-24 05:04:54,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:04:54,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:04:54,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:04:54,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:04:54,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:54" (1/1) ... [2019-11-24 05:04:54,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:54" (1/1) ... [2019-11-24 05:04:54,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:04:54,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:04:54,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:04:54,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:04:54,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:54" (1/1) ... [2019-11-24 05:04:54,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:54" (1/1) ... [2019-11-24 05:04:54,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:54" (1/1) ... [2019-11-24 05:04:54,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:54" (1/1) ... [2019-11-24 05:04:55,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:54" (1/1) ... [2019-11-24 05:04:55,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:54" (1/1) ... [2019-11-24 05:04:55,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:54" (1/1) ... [2019-11-24 05:04:55,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:04:55,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:04:55,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:04:55,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:04:55,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:54" (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 05:04:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:04:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:04:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:04:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:04:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:05:19,481 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:05:19,481 INFO L284 CfgBuilder]: Removed 925 assume(true) statements. [2019-11-24 05:05:19,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:05:19 BoogieIcfgContainer [2019-11-24 05:05:19,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:05:19,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:05:19,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:05:19,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:05:19,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:04:53" (1/3) ... [2019-11-24 05:05:19,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f2593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:05:19, skipping insertion in model container [2019-11-24 05:05:19,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:04:54" (2/3) ... [2019-11-24 05:05:19,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f2593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:05:19, skipping insertion in model container [2019-11-24 05:05:19,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:05:19" (3/3) ... [2019-11-24 05:05:19,493 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product35.cil.c [2019-11-24 05:05:19,507 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:05:19,518 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:05:19,537 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:05:19,574 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:05:19,574 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:05:19,574 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:05:19,575 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:05:19,575 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:05:19,575 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:05:19,575 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:05:19,576 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:05:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 05:05:19,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:05:19,607 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:05:19,608 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:05:19,609 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:05:19,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:05:19,617 INFO L82 PathProgramCache]: Analyzing trace with hash -619044070, now seen corresponding path program 1 times [2019-11-24 05:05:19,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:05:19,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481345604] [2019-11-24 05:05:19,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:05:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:20,148 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 05:05:20,150 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481345604] [2019-11-24 05:05:20,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:05:20,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:05:20,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146234418] [2019-11-24 05:05:20,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:05:20,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:05:20,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:05:20,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:05:20,185 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 05:05:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:05:20,236 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 05:05:20,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:05:20,238 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:05:20,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:05:20,259 INFO L225 Difference]: With dead ends: 100 [2019-11-24 05:05:20,260 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:05:20,266 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:05:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:05:20,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 05:05:20,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 05:05:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 05:05:20,352 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 05:05:20,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:05:20,352 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 05:05:20,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:05:20,354 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 05:05:20,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:05:20,355 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:05:20,355 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:05:20,356 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:05:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:05:20,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1809739447, now seen corresponding path program 1 times [2019-11-24 05:05:20,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:05:20,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975267283] [2019-11-24 05:05:20,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:05:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:20,627 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 05:05:20,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975267283] [2019-11-24 05:05:20,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:05:20,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:05:20,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172189878] [2019-11-24 05:05:20,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:05:20,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:05:20,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:05:20,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:05:20,632 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 05:05:20,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:05:20,652 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 05:05:20,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:05:20,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:05:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:05:20,655 INFO L225 Difference]: With dead ends: 94 [2019-11-24 05:05:20,655 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 05:05:20,656 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:05:20,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 05:05:20,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 05:05:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 05:05:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 05:05:20,666 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 05:05:20,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:05:20,666 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 05:05:20,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:05:20,667 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 05:05:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:05:20,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:05:20,668 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:05:20,669 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:05:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:05:20,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2129941774, now seen corresponding path program 1 times [2019-11-24 05:05:20,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:05:20,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947245722] [2019-11-24 05:05:20,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:05:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:05:20,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947245722] [2019-11-24 05:05:20,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:05:20,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:05:20,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350158816] [2019-11-24 05:05:20,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:05:20,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:05:20,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:05:20,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:05:20,891 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 5 states. [2019-11-24 05:05:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:05:21,308 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions. [2019-11-24 05:05:21,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:05:21,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 05:05:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:05:21,312 INFO L225 Difference]: With dead ends: 136 [2019-11-24 05:05:21,312 INFO L226 Difference]: Without dead ends: 110 [2019-11-24 05:05:21,313 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:05:21,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-24 05:05:21,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2019-11-24 05:05:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-24 05:05:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 137 transitions. [2019-11-24 05:05:21,344 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 137 transitions. Word has length 13 [2019-11-24 05:05:21,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:05:21,351 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 137 transitions. [2019-11-24 05:05:21,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:05:21,351 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 137 transitions. [2019-11-24 05:05:21,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:05:21,352 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:05:21,352 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:05:21,354 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:05:21,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:05:21,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2124565666, now seen corresponding path program 1 times [2019-11-24 05:05:21,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:05:21,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942808453] [2019-11-24 05:05:21,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:05:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:05:21,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942808453] [2019-11-24 05:05:21,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:05:21,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 05:05:21,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905908096] [2019-11-24 05:05:21,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:05:21,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:05:21,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:05:21,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:05:21,762 INFO L87 Difference]: Start difference. First operand 87 states and 137 transitions. Second operand 6 states. [2019-11-24 05:05:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:05:23,589 INFO L93 Difference]: Finished difference Result 184 states and 286 transitions. [2019-11-24 05:05:23,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-24 05:05:23,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-24 05:05:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:05:23,593 INFO L225 Difference]: With dead ends: 184 [2019-11-24 05:05:23,593 INFO L226 Difference]: Without dead ends: 178 [2019-11-24 05:05:23,594 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-24 05:05:23,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-11-24 05:05:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 146. [2019-11-24 05:05:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-24 05:05:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 246 transitions. [2019-11-24 05:05:23,610 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 246 transitions. Word has length 13 [2019-11-24 05:05:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:05:23,610 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 246 transitions. [2019-11-24 05:05:23,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:05:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 246 transitions. [2019-11-24 05:05:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:05:23,612 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:05:23,612 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:05:23,612 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:05:23,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:05:23,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1294654247, now seen corresponding path program 1 times [2019-11-24 05:05:23,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:05:23,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410536208] [2019-11-24 05:05:23,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:05:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:05:23,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410536208] [2019-11-24 05:05:23,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:05:23,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:05:23,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742063478] [2019-11-24 05:05:23,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:05:23,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:05:23,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:05:23,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:05:23,675 INFO L87 Difference]: Start difference. First operand 146 states and 246 transitions. Second operand 3 states. [2019-11-24 05:05:23,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:05:23,700 INFO L93 Difference]: Finished difference Result 426 states and 722 transitions. [2019-11-24 05:05:23,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:05:23,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-24 05:05:23,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:05:23,702 INFO L225 Difference]: With dead ends: 426 [2019-11-24 05:05:23,703 INFO L226 Difference]: Without dead ends: 284 [2019-11-24 05:05:23,704 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:05:23,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2019-11-24 05:05:23,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 238. [2019-11-24 05:05:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-11-24 05:05:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 422 transitions. [2019-11-24 05:05:23,735 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 422 transitions. Word has length 15 [2019-11-24 05:05:23,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:05:23,735 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 422 transitions. [2019-11-24 05:05:23,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:05:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 422 transitions. [2019-11-24 05:05:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:05:23,741 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:05:23,741 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:05:23,742 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:05:23,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:05:23,742 INFO L82 PathProgramCache]: Analyzing trace with hash -352938230, now seen corresponding path program 1 times [2019-11-24 05:05:23,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:05:23,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131128431] [2019-11-24 05:05:23,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:05:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:05:23,833 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131128431] [2019-11-24 05:05:23,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:05:23,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:05:23,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809441993] [2019-11-24 05:05:23,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:05:23,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:05:23,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:05:23,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:05:23,836 INFO L87 Difference]: Start difference. First operand 238 states and 422 transitions. Second operand 3 states. [2019-11-24 05:05:23,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:05:23,862 INFO L93 Difference]: Finished difference Result 698 states and 1242 transitions. [2019-11-24 05:05:23,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:05:23,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-24 05:05:23,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:05:23,866 INFO L225 Difference]: With dead ends: 698 [2019-11-24 05:05:23,866 INFO L226 Difference]: Without dead ends: 464 [2019-11-24 05:05:23,870 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:05:23,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2019-11-24 05:05:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 418. [2019-11-24 05:05:23,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2019-11-24 05:05:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 762 transitions. [2019-11-24 05:05:23,907 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 762 transitions. Word has length 16 [2019-11-24 05:05:23,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:05:23,907 INFO L462 AbstractCegarLoop]: Abstraction has 418 states and 762 transitions. [2019-11-24 05:05:23,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:05:23,907 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 762 transitions. [2019-11-24 05:05:23,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 05:05:23,914 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:05:23,915 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:05:23,915 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:05:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:05:23,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1340138631, now seen corresponding path program 1 times [2019-11-24 05:05:23,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:05:23,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096358193] [2019-11-24 05:05:23,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:05:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:05:24,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096358193] [2019-11-24 05:05:24,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845062900] [2019-11-24 05:05:24,222 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 05:05:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:24,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:05:24,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:05:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:05:24,733 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:05:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:05:24,774 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [496097174] [2019-11-24 05:05:24,828 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-24 05:05:24,828 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:05:24,834 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:05:24,841 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:05:24,842 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs