/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/minepump_spec2_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:21:14,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:21:14,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:21:14,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:21:14,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:21:14,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:21:14,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:21:14,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:21:14,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:21:14,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:21:14,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:21:14,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:21:14,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:21:14,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:21:14,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:21:14,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:21:14,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:21:14,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:21:14,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:21:14,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:21:14,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:21:14,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:21:14,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:21:14,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:21:14,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:21:14,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:21:14,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:21:14,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:21:14,314 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 05:21:14,334 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:21:14,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:21:14,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:21:14,335 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:21:14,335 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:21:14,336 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:21:14,336 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:21:14,336 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:21:14,336 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:21:14,336 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:21:14,336 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:21:14,337 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:21:14,337 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:21:14,337 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:21:14,337 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:21:14,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:21:14,338 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:21:14,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:21:14,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:21:14,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:21:14,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:21:14,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:21:14,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:21:14,339 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:21:14,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:21:14,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:21:14,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:21:14,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:21:14,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:21:14,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:21:14,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:21:14,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:21:14,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:21:14,341 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:21:14,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:21:14,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:21:14,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:21:14,342 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:21:14,604 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:21:14,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:21:14,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:21:14,629 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:21:14,629 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:21:14,630 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2019-11-24 05:21:14,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4993c5171/3bc6989d86384951bc0db74eac4e55c1/FLAG18a2411cc [2019-11-24 05:21:15,235 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:21:15,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2019-11-24 05:21:15,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4993c5171/3bc6989d86384951bc0db74eac4e55c1/FLAG18a2411cc [2019-11-24 05:21:15,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4993c5171/3bc6989d86384951bc0db74eac4e55c1 [2019-11-24 05:21:15,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:21:15,570 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:21:15,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:21:15,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:21:15,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:21:15,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:21:15" (1/1) ... [2019-11-24 05:21:15,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d72d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:15, skipping insertion in model container [2019-11-24 05:21:15,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:21:15" (1/1) ... [2019-11-24 05:21:15,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:21:15,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:21:16,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:21:16,122 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:21:16,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:21:16,261 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:21:16,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16 WrapperNode [2019-11-24 05:21:16,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:21:16,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:21:16,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:21:16,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:21:16,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:21:16,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:21:16,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:21:16,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:21:16,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:21:16,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:21:16,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:21:16,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:21:16,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (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 05:21:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:21:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:21:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:21:16,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:21:18,986 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:21:18,986 INFO L284 CfgBuilder]: Removed 194 assume(true) statements. [2019-11-24 05:21:18,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:21:18 BoogieIcfgContainer [2019-11-24 05:21:18,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:21:18,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:21:18,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:21:18,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:21:18,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:21:15" (1/3) ... [2019-11-24 05:21:18,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f2b14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:21:18, skipping insertion in model container [2019-11-24 05:21:18,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (2/3) ... [2019-11-24 05:21:19,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f2b14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:21:18, skipping insertion in model container [2019-11-24 05:21:19,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:21:18" (3/3) ... [2019-11-24 05:21:19,003 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2019-11-24 05:21:19,013 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:21:19,021 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:21:19,032 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:21:19,057 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:21:19,057 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:21:19,058 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:21:19,058 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:21:19,058 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:21:19,059 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:21:19,059 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:21:19,059 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:21:19,076 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:21:19,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:21:19,083 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:21:19,084 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:21:19,084 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:21:19,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:21:19,091 INFO L82 PathProgramCache]: Analyzing trace with hash -254567585, now seen corresponding path program 1 times [2019-11-24 05:21:19,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:21:19,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755919821] [2019-11-24 05:21:19,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:21:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:19,436 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 05:21:19,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755919821] [2019-11-24 05:21:19,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:21:19,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:21:19,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185359011] [2019-11-24 05:21:19,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:21:19,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:21:19,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:21:19,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:21:19,462 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2019-11-24 05:21:19,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:21:19,552 INFO L93 Difference]: Finished difference Result 68 states and 105 transitions. [2019-11-24 05:21:19,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:21:19,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:21:19,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:21:19,565 INFO L225 Difference]: With dead ends: 68 [2019-11-24 05:21:19,565 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 05:21:19,569 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 05:21:19,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 05:21:19,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 05:21:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 05:21:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2019-11-24 05:21:19,607 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 8 [2019-11-24 05:21:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:21:19,607 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2019-11-24 05:21:19,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:21:19,607 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2019-11-24 05:21:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:21:19,608 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:21:19,608 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-24 05:21:19,609 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:21:19,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:21:19,609 INFO L82 PathProgramCache]: Analyzing trace with hash -479894593, now seen corresponding path program 1 times [2019-11-24 05:21:19,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:21:19,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446761479] [2019-11-24 05:21:19,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:21:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:21:19,928 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446761479] [2019-11-24 05:21:19,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:21:19,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:21:19,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151457736] [2019-11-24 05:21:19,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:21:19,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:21:19,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:21:19,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:21:19,932 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand 5 states. [2019-11-24 05:21:20,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:21:20,087 INFO L93 Difference]: Finished difference Result 98 states and 133 transitions. [2019-11-24 05:21:20,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:21:20,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 05:21:20,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:21:20,089 INFO L225 Difference]: With dead ends: 98 [2019-11-24 05:21:20,089 INFO L226 Difference]: Without dead ends: 60 [2019-11-24 05:21:20,090 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:21:20,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-24 05:21:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2019-11-24 05:21:20,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-24 05:21:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2019-11-24 05:21:20,100 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 13 [2019-11-24 05:21:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:21:20,100 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2019-11-24 05:21:20,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:21:20,100 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2019-11-24 05:21:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:21:20,101 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:21:20,101 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:21:20,102 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:21:20,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:21:20,102 INFO L82 PathProgramCache]: Analyzing trace with hash 167734064, now seen corresponding path program 1 times [2019-11-24 05:21:20,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:21:20,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496953079] [2019-11-24 05:21:20,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:21:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:21:20,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496953079] [2019-11-24 05:21:20,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675910991] [2019-11-24 05:21:20,434 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 05:21:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:20,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-24 05:21:20,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:21:20,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:21:20,920 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:21:20,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:21:21,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1896937553] [2019-11-24 05:21:21,203 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:21:21,203 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:21:21,210 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:21:21,221 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:21:21,222 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:21:29,428 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:21:31,124 WARN L192 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:21:31,274 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:21:31,921 WARN L192 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 608 DAG size of output: 608 [2019-11-24 05:21:32,493 WARN L192 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 608 DAG size of output: 608 [2019-11-24 05:21:33,012 WARN L192 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 608 [2019-11-24 05:21:33,548 WARN L192 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 609 [2019-11-24 05:21:35,201 WARN L192 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 712 [2019-11-24 05:21:36,238 WARN L192 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 753 DAG size of output: 737 [2019-11-24 05:21:36,915 WARN L192 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 753 DAG size of output: 737 [2019-11-24 05:21:37,515 WARN L192 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 736 DAG size of output: 735 [2019-11-24 05:21:38,351 WARN L192 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 746 [2019-11-24 05:21:41,734 WARN L192 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 749 DAG size of output: 749 [2019-11-24 05:22:01,188 WARN L192 SmtUtils]: Spent 11.62 s on a formula simplification. DAG size of input: 1494 DAG size of output: 1185 [2019-11-24 05:22:12,167 WARN L192 SmtUtils]: Spent 10.96 s on a formula simplification. DAG size of input: 1494 DAG size of output: 1185 [2019-11-24 05:22:22,989 WARN L192 SmtUtils]: Spent 10.81 s on a formula simplification. DAG size of input: 1159 DAG size of output: 1152 [2019-11-24 05:22:33,276 WARN L192 SmtUtils]: Spent 10.19 s on a formula simplification. DAG size of input: 1183 DAG size of output: 1183